CN108547315B - Construction scheme for basement in wet zone - Google Patents
Construction scheme for basement in wet zone Download PDFInfo
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- CN108547315B CN108547315B CN201810363069.9A CN201810363069A CN108547315B CN 108547315 B CN108547315 B CN 108547315B CN 201810363069 A CN201810363069 A CN 201810363069A CN 108547315 B CN108547315 B CN 108547315B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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Abstract
The invention discloses a construction scheme of a basement in a humid zone, which comprises the following steps: s1, excavating a plurality of water storage holes, placing a support pipe with two communicated ends in the water storage holes, wherein a pipe body of the support pipe is provided with a plurality of water flowing holes, and a water pumping device is arranged in the support pipe; s2, digging a foundation pit in an area defined by the water storage holes, building a guide wall in the foundation pit, defining the guide wall into a waterproof area, paving a base waterproof coiled material in the waterproof area, and turning the base waterproof coiled material upwards along the inner wall of the guide wall to throw the base waterproof coiled material out of the guide wall; s3 erecting a template and pouring a continuous wall; s4, removing the template, and upwards paving the base surface waterproof roll thrown out of the guide wall on the outer wall of the continuous wall; s5 the facade waterproof coiled material is laid on the outer side of the continuous wall and is lapped with the base waterproof coiled material, so that the effects of weakening the influence of underground water in a damp zone on basement construction and improving the waterproof performance of the basement are achieved.
Description
Technical Field
The invention relates to the technical field of basement construction, in particular to a basement construction scheme in a humid zone.
Background
Along with the shortage of land resources, in order to improve the utilization rate of land resources, house buildings are continuously developed to the air and underground, and the construction of basements has become an effective means for improving the utilization rate of land. Along with the gradual deepening of the building depth of the basement, the basement is required to have better waterproof performance.
The steps in the basement construction process generally include in sequence: excavating a foundation pit; building a guide wall in the foundation pit, wherein the guide wall is enclosed into a waterproof area; paving a base surface waterproof roll material in the waterproof area, turning upwards along the inner wall of the guide wall when the base surface waterproof roll material is paved to the guide wall, throwing out the guide wall and positioning the guide wall at the outer side of the guide wall, wherein the horizontal section of the guide wall or the continuous wall is usually rectangular, and paving the base surface waterproof roll material is usually carried out in two directions, namely paving the base surface waterproof roll material respectively along the length direction and the width direction of the cross section of the guide wall; erecting a template and pouring a continuous wall; removing the template, and upwards paving the base surface waterproof roll thrown out of the guide wall on the continuous wall; and paving a vertical surface waterproof coiled material lapped with the base surface waterproof coiled material on the outer side of the continuous wall.
The underground water content in the humid zone is rich, and when the basement is constructed in the zone, due to the existence of a large amount of underground water, the inconvenience is caused to the construction procedures of foundation pit excavation, guide wall masonry, waterproof coiled material laying and the like, and the construction progress and the construction quality are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a construction scheme of a basement in a humid zone so as to weaken the influence of the underground water in the humid zone on the construction of the basement and improve the waterproof performance of the basement.
The technical purpose of the invention is realized by the following technical scheme:
the construction scheme of the basement in the wet zone comprises the following steps:
s1, excavating a plurality of water storage holes along the outer edge of a foundation pit to be excavated, placing a support pipe with two communicated ends in each water storage hole, attaching the outer wall of each support pipe to the inner wall of each water storage hole, arranging a plurality of water flowing holes on the pipe body of each support pipe, and arranging a water pumping device in each support pipe;
s2, digging a foundation pit in an area defined by the water storage holes, building a guide wall in the foundation pit, defining the guide wall into a waterproof area, laying a base waterproof coiled material in the waterproof area, and turning the base waterproof coiled material upwards along the inner wall of the guide wall to throw out the guide wall and locate at the outer side of the guide wall;
s3 erecting a template and pouring a continuous wall;
s4, removing the template, and upwards paving the base surface waterproof roll thrown out of the guide wall on the outer wall of the continuous wall;
s5, paving the facade waterproof roll on the outer side of the continuous wall, and overlapping the facade waterproof roll with the base waterproof roll.
Through adopting above-mentioned scheme, before the excavation foundation ditch, earlier at a plurality of holes that hold of this regional excavation to set up the stay tube in the hole of retaining, avoid the retaining hole to sink, assemble the groundwater in this moist area in the stay tube, and take this part groundwater out the stay tube through pumping device, according to actual conditions, the frequency of drawing water is controlled in a flexible way, reduces the water yield of this regional groundwater, reduce for the foundation ditch excavation, lead the inconvenience that construction processes such as wall building, waterproofing membrane lay, improve construction quality.
Preferably, the diameter of the water storage hole is 0.2-1.0m, and the depth of the water storage hole is 3-8 m.
Through adopting above-mentioned scheme, according to the construction strength and the retaining demand in actual excavation water storage hole, inject the diameter and the degree of depth in suitable water storage hole, under the prerequisite that satisfies the retaining demand, reduce construction strength, reduction of erection time.
Preferably, a filter screen is arranged in the water flowing hole.
By adopting the scheme, the underground water flowing into the supporting pipe is filtered, and the content of impurities entering the supporting pipe is reduced.
Preferably, the water pumping device comprises a water pumping pipe extending into the supporting pipe, and the water pumping pipe is connected with a water pump.
Through adopting above-mentioned scheme, the water pumper function is taken away the groundwater in the stay tube through the drinking-water pipe, the actual operation of being convenient for.
Preferably, before the guide wall is built in step S2, a retaining wall is built along the inner wall of the foundation pit, the retaining wall is enclosed into a working area, a pocket bottom waterproof roll is laid in the working area, a margin is reserved when the pocket bottom waterproof roll is laid to the inner wall of the retaining wall, the guide wall is built in the working area and on the periphery of the waterproof roll, and an operation channel is reserved between the guide wall and the retaining wall;
in the step S4, after the base surface waterproof roll is laid upwards on the outer wall of the continuous wall, the reserved pocket bottom waterproof roll is turned back and is laid upwards on the outer wall of the guide wall and the outer wall of the continuous wall along the outer wall of the guide wall;
and in the step S5, the facade waterproof coiled material is lapped with the base waterproof coiled material and the bottom waterproof coiled material.
By adopting the scheme, the retaining wall isolates the inner wall of the foundation pit to form a working area with safe operation. The guide wall used as the continuous wall pouring benchmark is integrally positioned in a working area defined by the retaining wall, so that the length of the bottom waterproof coiled material along the length direction of the cross section of the retaining wall is greater than the length of the guide wall in the same direction, and similarly, the length of the bottom waterproof coiled material along the width direction of the cross section of the retaining wall is greater than the length of the guide wall in the same direction. So, waterproofing membrane turns back when turning over to the outer wall of leading the wall at the bottom of the pocket of two directions, waterproofing membrane's handing-over department can appear overlapping at the bottom of the pocket of two directions, the outer wall corner of wall is led to the parcel that can be better, equally, waterproofing membrane continues to turn over to the outer wall of continuous wall when at the bottom of the pocket of two directions, bigger overlapping can appear in waterproofing membrane's handing-over department at the bottom of the pocket of two directions to better parcel continuous wall's outer wall corner, and then improves basement waterproofing function.
Preferably, the base surface waterproof coiled material, the pocket bottom waterproof coiled material and the vertical surface waterproof coiled material are all paved with multiple layers.
Through adopting above-mentioned scheme, certain damage promptly loses the possibility of water-proof effects when reducing the individual layer, effectively improves water-proof effects.
Preferably, the laying height of the waterproof roll at the bottom of the pocket outside the continuous wall is larger than that of the waterproof roll at the base surface outside the continuous wall, and the waterproof roll at the vertical surface is lapped on the outside of the waterproof roll at the bottom of the pocket.
By adopting the scheme, the overlapped mode of shielding layer by layer is adopted, the end parts of the base surface waterproof coiled material, the pocket bottom waterproof coiled material and the vertical surface waterproof coiled material are staggered, and the waterproof effect is further improved.
Preferably, in step S5, the vertical waterproof roll is bonded to the base waterproof roll and the bottom waterproof roll by an adhesive.
By adopting the scheme, the adhesive bonding is a common waterproof roll lapping means, the lapping sealing performance is good, and the operability is good.
In conclusion, the invention has the following beneficial effects:
1. before a foundation pit is excavated, a plurality of water storage holes are excavated in the area, supporting pipes are arranged in the water storage holes, the water storage holes are prevented from collapsing, underground water in the humid area is gathered in the supporting pipes, the part of underground water is pumped out of the supporting pipes through a water pumping device, the water pumping frequency is flexibly controlled according to actual conditions, the water quantity of the underground water in the area is reduced, inconvenience caused by construction procedures such as foundation pit excavation, guide wall masonry, waterproof coiled material laying and the like is reduced, and the construction quality is improved;
2. the retaining wall is enclosed into a safe working area, and the guide wall used as the pouring reference of the continuous wall is positioned in the working area, so that the joint of the pocket bottom waterproof coiled materials in two directions is overlapped, corners of the outer wall of the guide wall and the outer wall of the continuous wall can be better wrapped, and the waterproof function of the basement is further improved;
3. the base surface waterproof coiled material, the pocket bottom waterproof coiled material and the vertical surface waterproof coiled material adopt a mode of shielding and overlapping layer by layer, the end parts of the base surface waterproof coiled material, the pocket bottom waterproof coiled material and the vertical surface waterproof coiled material are staggered, and the waterproof effect is further improved.
Drawings
FIG. 1 is a plan view showing the positional relationship among a water storage hole, a foundation pit, a retaining wall, and a guide wall in example 1;
FIG. 2 is a schematic view showing the structure of the support tube;
FIG. 3 is a schematic view showing the structure of the water pumping device;
FIG. 4 is a plan view of the base waterproof roll material of S5 in example 1 after completion of laying;
fig. 5 is a schematic structural view of the base waterproof roll material in S5 in example 1 after the laying is completed;
fig. 6 is a schematic structural view of the waterproof roll material with the facade of S9 in example 1 after finishing laying.
In the figure, 1, a foundation pit; 2. retaining walls; 21. a working area; 22. waterproof coiled material of the pocket bottom; 3. a guide wall; 31. a water-proof zone; 32. a base surface waterproof roll; 4. an operation channel; 5. a continuous wall; 51. waterproof roll material of elevation; 6. a water storage hole; 61. supporting a tube; 611. a water flowing hole; 6111. a filter screen; 62. a water pumping pipe; 621. a water pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. As used in the following description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1
The construction scheme of the basement in the humid zone comprises the following steps:
s1 As shown in figure 1, a plurality of water storage holes 6 are dug downwards along the ground, the water storage holes 6 are cylindrical holes, and the axis is vertical to the ground. The diameter of the water storage hole 6 is 0.2m, and the depth of the water storage hole 6 is 3 m. And a plurality of water storage holes 6 enclose a rectangular area which is the area of the foundation pit 1 to be excavated. Referring to fig. 2, a circular tube-shaped support tube 61 with two ends communicated with each other is disposed in the water storage hole 6, the outer wall of the support tube 61 is attached to the inner wall of the water storage hole 6, a plurality of water flow holes 611 are disposed on the tube body of the support tube 61, and a filter screen 6111 is disposed in the water flow holes 611. Referring to fig. 3, a water pumping device is disposed in the support tube 61, the water pumping device includes a water pumping pipe 62 extending into the support tube 61, and a water pump 621 is disposed on the water pumping pipe 62. Before the foundation pit 1 is excavated, a plurality of water storage holes 6 are firstly excavated in the area, the support pipes 61 are arranged in the water storage holes 6, the water storage holes 6 are prevented from collapsing, the underground water in the humid area is gathered in the support pipes 61, the part of the underground water is pumped out of the support pipes 61 through the water pumping device, the water pumping frequency is flexibly controlled according to actual conditions, the water quantity of the underground water in the area is reduced, the inconvenience caused by the construction procedures of excavation of the foundation pit 1, building of the guide wall 3, laying of waterproof coiled materials and the like is reduced, and the construction quality is improved;
s2 referring back to fig. 1, the foundation pit 1 is excavated in the area enclosed by the water storage holes 6, the internal space of the foundation pit 1 is rectangular, the bottom surface is the bottom wall of the foundation pit 1, and the vertical side surfaces are the inner wall of the foundation pit 1. Building a retaining wall 2 along four inner walls of the foundation pit 1, wherein the retaining wall 2 is enclosed into a cuboid region which is a working region 21, and the side wall of the retaining wall 2 close to the center of the working region 21 is the inner wall of the retaining wall;
s3 referring to fig. 4, two layers of bottom waterproof rolls 22 are laid in the working area 21, and are laid in the longitudinal direction and the width direction of the working area 21, respectively. When the paving is carried out to the inner wall of the retaining wall 2, a section of waterproof coil 22 with a pocket bottom is reserved;
s4 referring back to fig. 1, the guide wall 3 is constructed along the inner wall of the retaining wall 2, and an operation passage 4 is reserved between the retaining wall 2 and the guide wall 3. The guide wall 3 is enclosed into a cuboid region which is a waterproof region 31, and the side wall of the guide wall 3 close to or far away from the center of the waterproof region 31 is the inner wall or the outer wall of the waterproof region respectively;
s5 two layers of the base-surface waterproofing sheet 32 are laid in the waterproofing zone 31, respectively in both the lengthwise direction and the widthwise direction of the waterproofing zone 31. Referring to fig. 5, when the laying process is performed to the inner wall of the guide wall 3, the base waterproof roll 32 is turned upward along the inner wall of the guide wall 3 and thrown out of the guide wall 3 and is located outside the guide wall 3;
with reference to fig. 6:
s6, erecting a formwork, and pouring the continuous wall 5, wherein the continuous wall 5 is located in the waterproof area 31, and the base waterproof roll 32 wraps the bottom of the continuous wall 5. The vertical side surface of the continuous wall 5 close to the guide wall 3 is the outer wall of the continuous wall, and a base waterproof roll 32 is clamped between the outer side surface of the continuous wall 5 and the guide wall 3;
s7, removing the template, and spreading the base waterproof roll 32 thrown out of the guide wall 3 upwards on the outer wall of the continuous wall 5;
s8, the reserved waterproof roll material 22 at the bottom of the pocket is turned back and laid, when the waterproof roll material is turned back to the outer wall of the guide wall 3, the waterproof roll material is turned upwards along the outer wall of the guide wall 3 and laid on the outer wall of the guide wall 3 and the outer wall of the continuous wall 5, and the laying height of the outer wall of the continuous wall 5 is higher than that of the waterproof roll material 32 at the outer wall of the continuous wall 5, namely the waterproof roll material 32 covering the base surface is arranged at the end of the outer wall of the continuous wall 5. As can be seen from this step, the length of bottom waterproofing sheet 22 reserved in S3 should be such that the laying height of base waterproofing sheet 32 on the outer wall of continuous wall 5 is higher when it is laid upside down. With reference to fig. 4, when the pocket bottom waterproofing membranes 22 in two directions are turned back to the outer wall of the guide wall 3, the pocket bottom waterproofing membranes 22 in two directions overlap at the corner of the outer wall of the guide wall 3, so that the corner of the outer wall of the guide wall 3 can be better wrapped, and similarly, when the pocket bottom waterproofing membranes 22 in two directions continue to be turned up to the continuous outer wall, the pocket bottom waterproofing membranes 22 in two directions overlap more at the corner of the outer wall of the continuous wall 5, so that the corner of the outer wall of the continuous wall 5 can be better wrapped, and the waterproof function of the basement is further improved;
s9, paving the facade waterproof roll 51 on the outer wall of the continuous wall 5, and overlapping the waterproof roll 22 on the bottom and the waterproof roll 32 on the base surface in a bonding mode by using an adhesive. The bottom end of the facade waterproof roll 51 extends downward to the bottom of the end of the waterproof roll 22 at the bottom of the pocket and covers the end of the waterproof roll 22 at the outer wall of the continuous wall 5 at the bottom of the pocket. The waterproof roll 22, the base waterproof roll 32 and the facade waterproof roll 51 are overlapped in a layer-by-layer shielding manner, so that the waterproof effect is further improved.
Example 2
The difference from example 1 is that: the diameter of the water storage hole 6 in the S1 is 1.0m, and the depth of the water storage hole 6 is 8 m.
Example 3
The difference from example 1 is that: in S1, the diameter of the water storage hole 6 is 0.6m, and the depth of the water storage hole 6 is 6 m.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (1)
1. The construction scheme of the basement in the wet zone is characterized by comprising the following steps of:
s1 a plurality of water storage holes (6) are excavated along the outer edge of a foundation pit (1) to be excavated, the diameter of each water storage hole (6) is 0.2-1.0m, the depth of each water storage hole (6) is 3-8m, a support pipe (61) with two communicated ends is arranged in each water storage hole (6), the outer wall of each support pipe (61) is attached to the inner wall of each water storage hole (6), a plurality of water flowing holes (611) are formed in the pipe body of each support pipe (61), a water pumping device is arranged in each support pipe (61), the water pumping device comprises a water pumping pipe (62) extending into each support pipe (61), a water pump (621) is arranged on each water pumping pipe (62), and a filter screen (6111) is arranged in each water flowing hole (;
s2, digging a foundation pit (1) in an area surrounded by a plurality of water storage holes (6), building a guide wall (3) in the foundation pit (1), forming a waterproof area (31) by the guide wall (3), paving a base waterproof roll (32) in the waterproof area (31), and turning over the base waterproof roll (32) along the inner wall of the guide wall (3) to throw out the guide wall (3) and locate at the outer side of the guide wall (3);
s3 erecting a template and pouring a continuous wall (5);
s4, removing the template, and paving the base surface waterproof roll (32) thrown out of the guide wall (3) upwards on the outer wall of the continuous wall (5);
s5, paving a facade waterproof coiled material (51) on the outer side of the continuous wall (5) and overlapping with a base waterproof coiled material (32),
before the guide wall (3) is built in the step S2, a retaining wall (2) is built along the inner wall of the foundation pit (1), the retaining wall (2) is surrounded to form a working area (21), a pocket bottom waterproof roll (22) is laid in the working area (21), allowance is reserved when the pocket bottom waterproof roll (22) is laid to the inner wall of the retaining wall (2), the guide wall (3) is built in the working area (21) and on the pocket bottom waterproof roll, and an operation channel (4) is reserved between the guide wall (3) and the retaining wall (2);
in the step S4, after the base surface waterproof roll (32) is laid upwards on the outer wall of the continuous wall (5), the reserved pocket bottom waterproof roll (22) is turned back, and is laid upwards on the outer wall of the guide wall (3) and the outer wall of the continuous wall (5) along the outer wall of the guide wall (3);
in step S5 the multilayer has all been laid to basal plane waterproofing membrane (32), waterproof membrane (22) and facade waterproofing membrane (51) at the bottom of the pocket, waterproof membrane (22) at the bottom of the pocket lays highly more than basal plane waterproofing membrane (32) and lays highly in the diaphragm wall (5) outside at diaphragm wall (5), facade waterproofing membrane (51) overlap joint is in the outside of waterproof membrane (22) at the bottom of the pocket, facade waterproofing membrane (51) and basal plane waterproofing membrane (32), waterproof membrane (22) overlap joint adopt the bonding agent to bond at the bottom of the pocket.
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| CN114102860B (en) * | 2021-11-22 | 2023-05-30 | 安徽乾德建设工程有限公司 | Green pouring method of small-sized component for building construction |
| CN115506404A (en) * | 2022-10-18 | 2022-12-23 | 中国二十二冶集团有限公司 | Post-construction method for underground structure top plate construction hole |
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| CN104420476B (en) * | 2013-08-27 | 2016-05-18 | 中建四局第一建筑工程有限公司 | A kind of method and device that utilizes self-control tubule well lowering of watertable |
| CN103898915B (en) * | 2014-04-18 | 2016-02-10 | 中国二十二冶集团有限公司 | Building small-area deep foundation pit anti-floating water stop construction method |
| JP6570058B2 (en) * | 2015-07-13 | 2019-09-04 | 建築プランナー株式会社 | Outside air heat insulation house structure |
| CN206721904U (en) * | 2017-05-09 | 2017-12-08 | 青岛东捷建设工程有限公司 | A kind of integrated precipitation pumping system |
| CN107190783A (en) * | 2017-06-06 | 2017-09-22 | 中国建筑第二工程局有限公司 | Basement waterproof structure and construction method of basement outer wall waterproof structure |
| CN107313467B (en) * | 2017-08-24 | 2023-03-10 | 中国建筑第二工程局有限公司 | Coiled material fixing clamp and fixing structure at base plate brick moulding bed and construction method of coiled material fixing clamp and fixing structure |
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