CN212053177U - Overlength is encorbelmented and pull rod integrated configuration - Google Patents
Overlength is encorbelmented and pull rod integrated configuration Download PDFInfo
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- CN212053177U CN212053177U CN201922143967.6U CN201922143967U CN212053177U CN 212053177 U CN212053177 U CN 212053177U CN 201922143967 U CN201922143967 U CN 201922143967U CN 212053177 U CN212053177 U CN 212053177U
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Abstract
The utility model discloses an overlong cantilever and pull rod combined structure, which comprises a cast-in-place column (1); one side of the cast-in-place column is connected with a group of main body beams (2); the other side of the cast-in-situ column is connected with a group of cantilever beams (3); the top surfaces of the middle parts of the main body beam at the top end and the cantilever beam are provided with inclined pull anchor seats (4); the diagonal draw anchor bed is connected with a support anchor bed (6) positioned at the top of the cast-in-situ column through a group of diagonal draw bars (5); the bottom surface of the end part of the cantilever beam at the topmost end is provided with a connecting seat (7); the connecting base is connected with the connecting base on the top surface of the end part of the lower cantilever beam through a vertical steel pipe (8). The utility model discloses the structure atress is simple relatively, and the design of being convenient for, diagonal draw bar are located the building top, and on cantilever structure below ground, can afforest, have satisfied green construction resources are saved, the requirement that space-saving, environment are fit for living in. The cantilever beam is cast in place by adopting common concrete, has good fire resistance and durability, low later maintenance cost, and can effectively save building materials and reduce the construction cost.
Description
Technical Field
The utility model relates to a overlength is encorbelmented and draw bar integrated configuration belongs to cantilever building technical field.
Background
In the prior art, the cantilever building structure is mainly characterized in that the shearing resistance and tensile strength of a cantilever member are improved by increasing the section size of the cantilever member, and the cantilever member is used for bearing load; in the prior art, a cantilever member is made into a truss structure by adopting high-strength steel, and the tail end of the cantilever member is additionally constrained so as to reduce the deformation of the cantilever end.
The prior art has the following defects:
the shear resistance and the tensile strength of the cantilever member are improved by increasing the section size of the cantilever member, and a large-volume structure can be used in construction by depending on a method of bearing load of the cantilever member, so that the material consumption is large, the water consumption is large, and the waste is easily formed. The strength of concrete and steel is also required to be higher, the cost is increased, the using amount of the template and the difficulty of formwork support are also increased, and the construction period is correspondingly increased. In design, due to the fact that temperature stress of a large-volume structure is controlled poorly, stress conditions are complex, construction is not easy to control, errors are prone to forming in the calculation process, and calculation procedures are increased, requirements on professional skills and experience of designers are high, and cost and time are not good for owners.
The cantilever member is made into a truss structure by adopting high-strength steel, and the method of reducing the deformation of the cantilever end by adding restraint at the tail end of the cantilever member has the advantages of large steel usage amount and increased construction cost. The steel structure has poor fire resistance, and the steel structure is easy to deform and collapse when the temperature reaches 300-400 ℃, so that safety accidents are easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an overlength is encorbelmented and pull rod integrated configuration to improve among the conventional art too big, the poor problem of refractiveness and reduce the engineering input cost and have the characteristics that the operation is simple and easy, construction convenience, hoist and mount process factor of safety are high, thereby overcome the not enough of prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to an overlong cantilever and pull rod combined structure, which comprises a cast-in-place column; one side of the cast-in-place column is connected with a group of main body beams; the other side of the cast-in-situ column is connected with a group of cantilever beams; the top surfaces of the middle parts of the main body beam at the topmost end and the cantilever beam are provided with cable-stayed anchor seats; the diagonal draw anchor bed is connected with a support anchor bed positioned at the top of the cast-in-situ column through a group of diagonal draw bars; the bottom surface of the end part of the cantilever beam at the topmost end is provided with a connecting seat; the connecting base is connected with the connecting base on the top surface of the end part of the lower cantilever beam through a vertical steel pipe.
In the combined structure of the overlong cantilever and the pull rod, the cast-in-place column, the main body beam and the cantilever beam are cast in situ by adopting common concrete; the top surface of the cast-in-place column is higher than the top surfaces of the main body beam and the cantilever beam.
In the combined structure of the overlong cantilever and the pull rod, embedded steel plates are embedded in the top of the cast-in-place column, the middle point of the main body beam and the topmost cantilever beam, the bottom surface of the topmost cantilever beam end and the top surface of the lower cantilever beam end, and connecting bolts are welded on the embedded steel plates; the supporting anchor seat is connected with an embedded steel plate at the top of the cast-in-place column through a connecting bolt; the cable-stayed anchor base is connected with the main body beam and the embedded steel plate at the midpoint of the topmost cantilever beam through the connecting bolt; the connecting base is connected with the bottom surface of the top end of the cantilever beam and the embedded steel plate on the top surface of the end part of the lower cantilever beam through connecting bolts.
In the combined structure of the ultralong cantilever and the pull rod, the diagonal draw bar is a high-strength prestressed steel pull rod, the two ends of the diagonal draw bar are provided with threads for connecting the diagonal draw anchor block and the support anchor block, and the threads are connected with the nut.
In the combined structure of the overlong cantilever and the pull rod, the vertical steel pipe is a hollow steel pipe, and two ends of the vertical steel pipe are respectively provided with a connecting plate; the upper and lower cantilever beams are connected into a whole through the connecting plate and the connecting seat.
Since the technical scheme is used, the utility model discloses compare with prior art, the utility model discloses cantilever beam adopts ordinary concrete cast-in-place, and the refractiveness is good with the durability, and later maintenance cost is low to through reducing to the use of steel, control cantilever beam cross sectional area and template quantity, can effectively save building material, reduce construction cost. The structure is relatively simple in stress, convenient to design and beneficial to saving time and cost. The steel pull rod is positioned at the top of the building, the additional arrangement of the constraint support at the end part of the cantilever beam is avoided, and the ground below the cantilever structure can be used for greening, so that the requirements of green construction, resource saving, space saving and environment living in life are met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figures are: 1-cast-in-place column, 2-main body beam, 3-cantilever beam, 4-diagonal anchor block, 5-diagonal rod, 6-support anchor block, 7-connecting seat, 8-vertical steel pipe, 9-embedded steel plate, 10-connecting bolt and 11-connecting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model relates to an overlong cantilever and pull rod combined structure, as shown in figure 1, the structure comprises a cast-in-place column 1; one side of the cast-in-place column 1 is connected with a group of main body beams 2; the other side of the cast-in-situ column 1 is connected with a group of cantilever beams 3; the top surfaces of the middle parts of the main body beam 2 at the topmost end and the cantilever beam 3 are provided with cable-stayed anchor blocks 4; the diagonal draw anchor bed 4 is connected with a support anchor bed 6 positioned at the top of the cast-in-situ column 1 through a group of diagonal draw bars 5; the bottom surface of the end part of the cantilever beam 3 at the topmost end is provided with a connecting seat 7; the connecting base 7 is connected with the connecting base 7 on the top surface of the end part of the lower cantilever beam 3 through a vertical steel pipe 8. The cast-in-place column 1, the main body beam 2 and the cantilever beam 3 are cast in situ by adopting common concrete; the top surface of the cast-in-place column 1 is higher than the top surfaces of the main body beam 2 and the cantilever beam 3. Embedded steel plates 9 are embedded in the top of the cast-in-place column 1, the middle points of the main body beam 2 and the topmost cantilever beam 3, the bottom surface of the topmost cantilever beam 3 and the top surface of the lower cantilever beam 3, and connecting bolts 10 are welded on the embedded steel plates 9; the supporting anchor seat 6 is connected with an embedded steel plate 9 at the top of the cast-in-situ column 1 through a connecting bolt 10; the cable-stayed anchor bed 4 is connected with the main body beam 2 and the embedded steel plate 9 at the midpoint of the cantilever beam 3 at the topmost end through the connecting bolt 10; the connecting base 7 is respectively connected with the bottom surface of the top end of the cantilever beam 3 and the embedded steel plate 9 on the top surface of the end part of the lower cantilever beam 3 through the connecting bolt 10. The diagonal draw bar 5 adopts high-strength prestressed steel pull rod, and the two ends of the diagonal draw bar 5 are provided with threads for connecting the diagonal draw anchor socket 4 and the support anchor socket 6, and the threads are connected with nuts. The vertical steel pipe 8 is a hollow steel pipe, and two ends of the vertical steel pipe 8 are respectively provided with a connecting plate 11; the upper and lower cantilever beams 3 are connected into a whole through the connecting plate 11 and the connecting seat 7.
Be used for above-mentioned the utility model discloses a construction method of overlength cantilever and pull rod integrated configuration does, and this method is under construction according to following step:
firstly, casting a cast-in-place column 1, a main body beam 2 and a cantilever beam 3 in situ; during pouring, placing and fixing embedded steel plates 9 on the top surface of the cast-in-place column 1, the top surfaces of the middle points of the main body beam 2 and the cantilever beam 3, the bottom surface of the end part of the topmost cantilever beam 3 and the top surface of the end part of the lower cantilever beam 3;
secondly, mounting a supporting anchor seat 6 on an embedded steel plate 9 at the top end of the cast-in-situ column 1; a cable-stayed anchor socket 4 is arranged on the embedded steel plates 9 on the top surfaces of the middle points of the main body beam 2 and the cantilever beam 3; a connecting seat 7 is arranged on the bottom surface of the end part of the cantilever beam 3 at the topmost end and the top surface of the end part of the cantilever beam 3 at the lower layer;
thirdly, installing a diagonal draw bar 5 between the diagonal draw anchor bed 4 and the support anchor bed 6;
and step four, mounting a vertical steel pipe 8 between the topmost cantilever beam 3 and the connecting seat 7 on the lower cantilever beam 3.
In the specific embodiment, this example is shown in fig. 1, and comprises a plurality of diagonal draw bars 5 extending from a support anchorage 6 at the top of a cast-in-situ column 1; the other end of the diagonal draw bar 5 is connected with a diagonal draw anchor block 4 which is pre-embedded in the middle of the main body beam 2 and the cantilever beam 3; the bottom surface of the end part of the cantilever beam 3 is provided with a connecting seat 7; the connecting seat 7 is connected with a vertical steel pipe 8 vertical to the cantilever beam 3; the other end of the vertical steel pipe 8 is connected with the pre-embedded connecting seat at the top surface of the end part of the lower cantilever beam 3.
The cantilever beam 3 is cast in situ in advance. Avoiding the use of a large amount of steel, improving the durability and fire resistance of the structure and reducing the requirements on later maintenance cost. Before the cantilever beam 3 is poured, reinforcing steel bars and a diagonal anchor base 7 are embedded in the cantilever beam 3, and connecting holes corresponding to the diagonal draw bars are formed in the diagonal anchor base 7. The supporting anchor seat 6 is connected with the embedded steel plate 9 through a connecting bolt 10 by field hoisting. The diagonal draw bar 5 is hoisted on site to be connected with the diagonal draw anchor bed 4 and the support anchor bed 6. The requirement of bearing load of the structure is met, the construction process can be simplified, and the construction period is shortened. The vertical steel pipe 8 is perpendicular to the end part of the cantilever beam 3, and one end of the vertical steel pipe 8 is connected and fixed with a connecting seat 7 arranged on the bottom surface of the end part of the cantilever beam 3 through a high-strength bolt; the other end of the vertical steel pipe 8 is connected with the lower cantilever beam 3, and the load borne by the lower beam can be effectively shared. The diagonal draw bar 5 and the cast-in-place column 1 are fixedly connected through a support anchor seat 6 connected with an embedded steel plate embedded in the cast-in-place column 1 through bolts. The joint of the cantilever beam 3 and the cable-stayed anchor block 4 is pre-embedded with a connecting rib, the pre-embedded steel plate 9 is welded with the connecting rib, and the pre-embedded steel plate 9 and the cable-stayed anchor block 4 are connected by binding steel bars. And bolt holes matched with the high-strength bolts are formed in the supporting anchor seat 6 and the connecting seat 7. The diagonal draw bar 5 adopts a high-strength prestressed steel draw bar, and threads are processed at two ends of the steel draw bar according to requirements so as to facilitate bolt connection through anchor seat holes. And the diagonal draw bars 5 are subjected to a tension test before hoisting to detect whether the residual deformation value meets the requirement. Vertical steel pipe 8 adopts hollow steel pipe, and 8 both ends welding of vertical steel pipe have connecting plate 11, are equipped with the bolt hole on the connecting plate 11, are convenient for form the high-strength connection through high-strength bolt and connecting seat 7. The high-strength connecting bolt 10 is less in structural weakening, can bear dynamic load, is fatigue-resistant and can be disassembled and replaced. The cantilever beam is cast in situ by adopting common concrete, and has good moldability. The embedded steel plate 9 is poured on the top of the cast-in-place column 1 as required to form a whole.
The utility model discloses stretch out a set of draw bar 5 and be connected and form cantilever structure with 3 upper portions of cantilever beam from the support anchorage at 1 top of cast-in-place post, both satisfied the building requirement that the building material quantity is few, the environmental protection, avoided the appearance of bulky roof beam or truss again, reduced the design and the construction degree of difficulty, reached space utilization height and the pleasing to the eye effect of appearance.
The utility model discloses a construction method includes following process: pouring in place → installing anchor block and connecting seat → installing diagonal draw bar → installing vertical steel pipe.
When the cantilever beam is poured, the cantilever beam is poured in situ by erecting a template, steel bars are bound in the template, and connecting bars and embedded steel plates are embedded in the beam; and (4) dismantling the template after the cantilever beam concrete meets the strength requirement. Pre-burying a diagonal cable anchor base at a corresponding position; installing a diagonal draw bar and a vertical steel pipe; and (3) adopting water tank injection loading as a load test of the cantilever beam, and carrying out three-stage loading, wherein the loading range is the range of the plate born by the cantilever beam, and whether the deflection meets the requirement is detected.
When the template is erected, the full framing is erected on the basis that the bearing capacity requirement is met through tamping treatment, and the bottom of the vertical rod is provided with a wood cushion block. The floor sweeping rod is erected on the bottom surface of the upright post, the distance between the upright posts meets the requirement of erection specifications, the inclined strut is arranged on the outer side of the inclined post and connected with the upright post, and the vertical continuous scissor strut from bottom to top is arranged on the periphery of the outer side. And (3) installing a template after a template supporting system is made, cleaning up sundries in the template before concrete pouring, and setting arching on the cast-in-place reinforced concrete beam with the span of more than 4 meters. When weather conditions permit, concrete is poured, construction load is controlled, the concrete cannot be poured in one place in a concentrated mode, the area is not more than 1 square meter, and the one-time pouring height of the concrete beam is not more than 400 mm.
The inclined pull rod is detected through a physical tensile test before installation, and whether the residual deformation value of the steel pull rod meets the requirement or not and whether each part has obvious plastic deformation or not is determined through a test by the steel pull rod resistance chip. And after the cable-stayed anchor block and the supporting anchor block are fixed, installing the cable-stayed rod on site by adopting crane operation. Before the vertical steel pipe is installed, whether the connection between the vertical steel pipe and the connecting sheet is intact is checked, and the vertical steel pipe is installed by adopting crane operation on site. And the cantilever beam needs deflection detection. The deflection detection is needed to be carried out on the diagonal draw bars, and the stress form of the diagonal draw bars is single and only bears the unidirectional pulling force. Therefore, the strain gauge should be adhered along the stress direction of the diagonal draw bar, namely arranged along the direction of the diagonal draw bar. And pre-pressing is carried out before load is applied to eliminate non-elastic deformation in the structural test process, after the pre-pressing is finished, the stability is carried out for 15 minutes, and each test group starts to collect initial readings. And starting to load after the initial value is acquired. The roof layer water tank should be filled with water simultaneously, the height of each water filling should be one third of the designed water level, and finally the loading height is reached in three times. In the loading process, each test group monitors the change condition of each test data, and if the change condition is abnormal, the change condition is reported to a technical responsible person in time. Technical responsible persons should organize technical personnel in time to analyze and judge, find out the cause of the problem and decide whether to carry out next loading. And (5) checking whether the deflection meets the requirement or not according to the project measurement grade by contrasting a displacement table.
The utility model discloses cantilever beam adopts ordinary concrete cast-in-place, and is fire-resistant and the durability is good, and the later maintenance cost is low to through reducing to the use of steel, control cantilever beam cross sectional area and template quantity, can effectively save building material, reduce construction cost. The structure is relatively simple in stress, convenient to design and beneficial to saving time and cost. The steel pull rod is positioned at the top of the building, and the ground below the cantilever structure of the steel pull rod can be used for greening, so that the requirements of green construction, resource saving, space saving and environment habitability are met.
Claims (5)
1. An overlong cantilever and pull rod combined structure comprises a cast-in-place column (1); the method is characterized in that: one side of the cast-in-situ column (1) is connected with a group of main body beams (2); the other side of the cast-in-situ column (1) is connected with a group of cantilever beams (3); diagonal cable anchor seats (4) are arranged on the top surfaces of the middle parts of the main body beam (2) and the cantilever beam (3) at the topmost end; the cable-stayed anchor bed (4) is connected with a supporting anchor bed (6) positioned at the top of the cast-in-situ column (1) through a group of cable-stayed rods (5); the bottom surface of the end part of the cantilever beam (3) at the topmost end is provided with a connecting seat (7); the connecting base (7) is connected with the connecting base (7) on the top surface of the end part of the lower cantilever beam (3) through a vertical steel pipe (8).
2. The combined structure of the ultra-long cantilever and the pull rod according to claim 1, wherein: the cast-in-place column (1), the main body beam (2) and the cantilever beam (3) are cast in situ by adopting common concrete; the top surface of the cast-in-place column (1) is higher than the top surfaces of the main body beam (2) and the cantilever beam (3).
3. The combined structure of the ultra-long cantilever and the pull rod according to claim 1, wherein: embedded steel plates (9) are embedded in the top of the cast-in-place column (1), the middle point of the main body beam (2) and the cantilever beam (3) at the topmost end, the bottom surface of the cantilever beam (3) at the topmost end and the top surface of the cantilever beam (3) at the lower layer, and connecting bolts (10) are welded on the embedded steel plates (9); the supporting anchor seat (6) is connected with an embedded steel plate (9) at the top of the cast-in-situ column (1) through a connecting bolt (10); the cable-stayed anchor base (4) is connected with the main body beam (2) and the embedded steel plate (9) at the midpoint of the cantilever beam (3) at the topmost end through a connecting bolt (10); the connecting seat (7) is respectively connected with the bottom surface of the end part of the cantilever beam (3) at the topmost end and the embedded steel plate (9) on the top surface of the end part of the cantilever beam (3) at the lower layer through connecting bolts (10).
4. The combined structure of the ultra-long cantilever and the pull rod according to claim 1, wherein: the diagonal draw bar (5) adopts a high-strength prestressed steel draw bar, the two ends of the diagonal draw bar (5) are provided with threads for connecting a diagonal draw anchor block (4) and a support anchor block (6), and the threads are connected with nuts.
5. The combined structure of the ultra-long cantilever and the pull rod according to claim 1, wherein: the vertical steel pipe (8) is a hollow steel pipe, and two ends of the vertical steel pipe (8) are respectively provided with a connecting plate (11); the upper and lower cantilever beams (3) are connected into a whole through the connecting plate (11) and the connecting seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922143967.6U CN212053177U (en) | 2019-12-04 | 2019-12-04 | Overlength is encorbelmented and pull rod integrated configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922143967.6U CN212053177U (en) | 2019-12-04 | 2019-12-04 | Overlength is encorbelmented and pull rod integrated configuration |
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| Publication Number | Publication Date |
|---|---|
| CN212053177U true CN212053177U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922143967.6U Expired - Fee Related CN212053177U (en) | 2019-12-04 | 2019-12-04 | Overlength is encorbelmented and pull rod integrated configuration |
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| CN (1) | CN212053177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863563A (en) * | 2019-12-04 | 2020-03-06 | 中建科技贵州有限公司 | Ultra-long cantilever and pull rod combined structure and construction method |
-
2019
- 2019-12-04 CN CN201922143967.6U patent/CN212053177U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863563A (en) * | 2019-12-04 | 2020-03-06 | 中建科技贵州有限公司 | Ultra-long cantilever and pull rod combined structure and construction method |
| CN110863563B (en) * | 2019-12-04 | 2024-07-12 | 中建科技贵州有限公司 | Ultra-long cantilever and pull rod combined structure and construction method |
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Granted publication date: 20201201 Termination date: 20211204 |