CN215715347U - Prestress connecting structure for building foundation pit support - Google Patents
Prestress connecting structure for building foundation pit support Download PDFInfo
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- CN215715347U CN215715347U CN202120387023.8U CN202120387023U CN215715347U CN 215715347 U CN215715347 U CN 215715347U CN 202120387023 U CN202120387023 U CN 202120387023U CN 215715347 U CN215715347 U CN 215715347U
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- pressurizing
- foundation pit
- connecting structure
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Abstract
The utility model provides a prestress connecting structure for building foundation pit bracing, which comprises force-retaining boxes (1), pressurizing components (2), jack pressurizing devices (3) and a supporting assembly, wherein the jack pressurizing devices (3) are longitudinally arranged between the adjacent force-retaining boxes (1), the jack pressurizing devices (3) are transversely arranged between the pressurizing components (2), the pressurizing direction of the jack pressurizing devices (3) is consistent with the axial direction of the supporting assembly, and the pressurizing components (2) are fixedly arranged on the supporting assembly and are orthogonal to the axial direction of the supporting assembly. Through the matching of the jack pressurizing device (3) and the force-maintaining box (1), the prestress can be conveniently, quickly and reliably maintained on the prestress connecting structure, so that the section steel supporting beam (41) is firmly supported in a butt-bracing or angle-bracing mode between the surrounding purlin beams (42) on the two opposite sides, and the structure can realize the reliable control of the deformation of the foundation pit.
Description
Technical Field
The utility model belongs to the technical field of building foundation pit bracing, and particularly relates to a prestress connecting structure for building foundation pit bracing.
Background
In order to protect the safety of the underground structure and the surrounding environment of the foundation pit, protective measures such as supporting and reinforcing are required to be applied to the side wall and the periphery of the foundation pit. The existing foundation pit supporting system generally comprises a construction method pile arranged around the edge of a foundation pit, surrounding purlin beams positioned on the inner side of the construction method pile, and supporting beams arranged between the surrounding purlin beams. The supporting beams are supported between the surrounding purlin beams on the two opposite sides, so that the supporting for the foundation pit is formed, and the supporting strength of the foundation pit supporting system is guaranteed.
In the prior art, in order to ensure that the supporting beam can be reliably supported between the enclosing purlin beams on the two opposite sides and provide powerful support for a foundation pit supporting system, the CN203420269U provides a prestressed connecting structure for building foundation pit support, but the steps are complicated in the actual operation process of using hydraulic pliers to open the pressurizing part, and the efficiency is relatively low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the step of applying prestress to the existing building foundation pit enclosure is complicated, the efficiency is low and the like, the application provides a prestress connecting structure for the building foundation pit enclosure, so that the technical defect problem of the building foundation pit enclosure in the prestress applying process is solved.
The utility model provides a prestress connecting structure for building foundation pit enclosure, which comprises force-retaining boxes, pressurizing parts, jack pressurizing devices and supporting components, wherein the jack pressurizing devices are longitudinally arranged between the adjacent force-retaining boxes, the jack pressurizing devices are axially arranged between the pressurizing parts, the pressurizing direction of the jack pressurizing devices is consistent with the axial direction of the supporting components, and the pressurizing parts are fixedly arranged on the supporting components and are orthogonal to the axial direction of the supporting components. Through the cooperation of the jack pressurizing device and the force-protecting box, the prestress can be conveniently, quickly and reliably kept on the prestress connecting structure, the structural steel supporting beam is firmly supported between the surrounding purlin beams or between the surrounding purlin beams at two opposite sides through angle supports, and the structure can realize the reliable control of the deformation of the foundation pit.
Furthermore, the pressurizing part comprises two supporting main boards which are arranged in parallel, and a supporting board which is perpendicular to the supporting main boards is arranged between the supporting main boards. The supporting structure of the pressurizing component can be ensured, and meanwhile, the weight of the component is reduced, and actual construction operation is facilitated.
Furthermore, the support component also comprises a stiffening rib plate, wherein the stiffening rib plate is vertical to the support main plate and the support plate, and the stiffening rib plate is parallel to the axial direction of the support component. The stiffening ribs may improve the stability and torsional properties of the support assembly.
Further, a gap between the jack pressurizing device and the pressurizing component after prestress application is filled by a steel plate. The pre-stressing force can be kept and the jack pressurizing device can be conveniently removed.
Furthermore, the force-maintaining box is in a cube or cuboid shape, and the force-maintaining box is fixedly connected with the pressurizing part by adopting a high-strength bolt. The force-retaining box is a braking device to ensure the tension of the jack pressurizing device.
Furthermore, the supporting component comprises a section steel supporting beam, a surrounding purlin beam and a triangular supporting seat.
Furthermore, the jack pressurizing devices are symmetrically arranged on two sides of the axis of the section steel supporting beam. The resultant force point of the jack pressurizing device is superposed with the axis of the section steel supporting beam.
Furthermore, the pressurizing component is fixedly arranged at the end part of the section steel supporting beam through welding or bolts, and the other end of the pressurizing component is fixedly arranged on the purlin surrounding beam.
Furthermore, the triangular supporting seat is in the shape of an isosceles right triangle, one end of the pressurizing part is fixedly installed on the triangular supporting seat through welding or bolts, and the other end of the pressurizing part is fixedly installed on the section steel supporting beam.
Furthermore, the section steel supporting beam is H-shaped steel with a plurality of open pores. The efficiency can be better played, and the bearing capacity is improved.
Compared with the prior art, the beneficial results of the utility model are as follows:
through the cooperation of the jack pressurizing device and the force-protecting box, the prestress is conveniently, quickly and reliably kept on the prestress connecting structure, the section steel supporting beam is firmly supported or angle-supported between the surrounding purlin beams on the two opposite sides, and the structure can realize the reliable control of the deformation of the foundation pit.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the utility model. Other embodiments and many of the intended advantages of embodiments will be readily appreciated as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding similar parts.
Fig. 1 is a schematic view of a prestressed coupling structure according to an embodiment of the present invention applied to a diagonal brace;
fig. 2 is a schematic view illustrating the prestressed coupling structure according to the embodiment of the present invention applied to a gusset.
Reference numerals: 1-a force-keeping box; 2-a pressing member; 21-supporting the main board; 22-a support plate; 3-jack pressurizing device; 41-section steel support beam; 42-enclosing a purlin beam; 43-triangular support base; 5-steel plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: as shown in fig. 1, the utility model provides a prestressed connecting structure for building foundation pit support, which comprises force-retaining boxes 1, pressure-retaining components 2, jack pressure devices 3 and a support component, wherein the jack pressure devices 3 are longitudinally arranged between the adjacent force-retaining boxes 1, the jack pressure devices 3 are axially arranged between the pressure-retaining components 2, the pressure direction of the jack pressure devices 3 is consistent with the axial direction of the support component, and the pressure-retaining components 2 are fixedly arranged on the support component and are orthogonal to the axial direction of the support component. The supporting assembly comprises a section steel supporting beam 41, a surrounding purlin beam 42 and a triangular supporting seat 43. Through the matching of the jack pressurizing device 3 and the force-protecting box 1, the prestress can be conveniently, quickly and reliably kept on the prestress connecting structure, and then the section steel supporting beam 41 is firmly supported between the surrounding purlin beams 42 at two opposite sides, and the structure can realize the reliable control of the deformation of the foundation pit. The labor intensity of workers is reduced, and the construction efficiency and the stability of construction quality are effectively improved. The force-maintaining box 1 is in a cubic or rectangular shape, and the force-maintaining box 1 and the pressurizing part 2 are fixedly connected by adopting a high-strength bolt. The force-retaining box 1 is a braking device to ensure the tension of the jack pressurizing device 3. The jack pressurizing devices 3 are symmetrically arranged on two sides of the axis of the section steel supporting beam 41, and the resultant force point of the jack pressurizing devices 3 is overlapped with the axis of the section steel supporting beam 41. The steel support beam 41 is an H-shaped steel with a plurality of openings to better perform the performance and improve the bearing capacity.
The pressing member 2 includes two support main plates 21 arranged in parallel with each other, and a support plate 22 perpendicular to the support main plates 21 is provided between the support main plates 21. The weight of the components can be reduced while the strength of the supporting structure of the pressurizing component 2 is ensured, and the actual construction operation is facilitated. One end of the pressurizing component 2 is fixedly arranged at the end part of the section steel support beam 41 through welding or bolts, and the other end is fixedly arranged on the surrounding purlin beam 42. Stiffening ribs (not shown) are provided along the parallel direction of the axis of the support assembly, perpendicular to the support main plate 21 and the support plate 22, which enhance the stability and torsion resistance of the support assembly. The distance between the stiffening rib plates is about 150-300 mm, and various specifications can be made according to the actual stress condition.
In the actual construction process, the jack pressurizing device 3 is placed between the pressurizing parts 2, the piston of the jack pressurizing device 3 extends out of the pressurizing parts 2, along with the increase of the force of the jack pressurizing device 3, the gap between the jack pressurizing device 3 and the pressurizing parts 2 is larger, when the load reaches the designed prestress value, the gap generated between the jack pressurizing device 3 and the pressurizing parts 2 is filled and plugged by adopting the steel plate 5, the jack pressurizing device 3 is relieved of pressure, the piston retracts, and therefore the applied prestress can be maintained, and the jack pressurizing device 3 can be removed conveniently.
Example 2: the rest of the structure in this example is as in example 1, except that: as shown in fig. 2, a prestressed connection structure for building foundation pit bracing is applied to a corner brace, a triangular support seat 43 is in the shape of an isosceles right triangle, one end of the prestressed connection structure is fixedly installed on one side of the triangular support seat 43 by welding or bolts, and the other end of the prestressed connection structure is fixedly installed on a section steel support beam 41 by bolts or welding.
While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the utility model and are not limiting of the scope of the utility model. The details of the embodiments are not to be interpreted as limiting the scope of the utility model, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the utility model, can be interpreted without departing from the spirit and scope of the utility model.
Claims (10)
1. The prestress connecting structure for building foundation pit bracing is characterized by comprising force-retaining boxes (1), pressurizing components (2), jack pressurizing devices (3) and supporting components, wherein the jack pressurizing devices (3) are longitudinally arranged between the adjacent force-retaining boxes (1), the jack pressurizing devices (3) are axially arranged between the pressurizing components (2), the pressurizing direction of the jack pressurizing devices (3) is consistent with the axial direction of the supporting components, and the pressurizing components (2) are fixedly arranged on the supporting components and are orthogonal to the axial direction of the supporting components.
2. A prestressed connecting structure for building foundation pit bracing according to claim 1, wherein said pressurizing member (2) comprises two supporting main plates (21) arranged in parallel with each other, and a supporting plate (22) perpendicular to said supporting main plates (21) is provided between said supporting main plates (21).
3. The prestressed connecting structure for building foundation pit bracing according to claim 2, further comprising a stiffening rib, wherein said stiffening rib is perpendicular to said supporting main plate (21) and said supporting plate (22), and said stiffening rib is parallel to the axial direction of said supporting member.
4. The prestressed connecting structure for building foundation pit bracing according to claim 1, wherein a gap between said jack pressurizing means (3) and said pressurizing member (2) after prestressing is applied is filled by a steel plate (5).
5. The prestressed connecting structure for building foundation pit bracing according to claim 1, wherein the force-retaining box (1) is in a cube or cuboid shape, and the force-retaining box (1) and the pressure member (2) are fixedly connected by high-strength bolts.
6. A prestressed connecting structure for building foundation pit support according to claim 1, wherein said bracing assembly comprises a section steel bracing beam (41), a purlin beam (42) and a triangular bracing seat (43).
7. The prestressed connecting structure for building foundation pit bracing according to claim 6, wherein said jack-pressing means (3) are symmetrically disposed on both sides of the axis of said section steel support beam (41).
8. The prestressed connecting structure for building foundation pit bracing according to claim 6, wherein one end of said pressure-applying member (2) is fixedly mounted to the end of said section steel support beam (41) by welding or bolts, and the other end is fixedly mounted to said purlin-surrounding beam (42).
9. The prestressed connecting structure for building foundation pit bracing according to claim 6, wherein said triangular support base (43) is in the shape of an isosceles right triangle, one end of said pressing member (2) is fixedly mounted on said triangular support base (43) by welding or bolt, and the other end is fixedly mounted on said section steel support beam (41).
10. The prestressed connecting structure for building foundation pit support according to claim 6, wherein said steel support beam (41) is H-shaped steel having a plurality of openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120387023.8U CN215715347U (en) | 2021-02-21 | 2021-02-21 | Prestress connecting structure for building foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120387023.8U CN215715347U (en) | 2021-02-21 | 2021-02-21 | Prestress connecting structure for building foundation pit support |
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| Publication Number | Publication Date |
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| CN215715347U true CN215715347U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120387023.8U Active CN215715347U (en) | 2021-02-21 | 2021-02-21 | Prestress connecting structure for building foundation pit support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115369886A (en) * | 2022-04-21 | 2022-11-22 | 东通岩土科技股份有限公司 | Tool type supporting system capable of automatically adjusting axial force for foundation pit |
-
2021
- 2021-02-21 CN CN202120387023.8U patent/CN215715347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115369886A (en) * | 2022-04-21 | 2022-11-22 | 东通岩土科技股份有限公司 | Tool type supporting system capable of automatically adjusting axial force for foundation pit |
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