CN210597326U - Precast concrete bearing structure that can assemble - Google Patents
Precast concrete bearing structure that can assemble Download PDFInfo
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- CN210597326U CN210597326U CN201921199884.2U CN201921199884U CN210597326U CN 210597326 U CN210597326 U CN 210597326U CN 201921199884 U CN201921199884 U CN 201921199884U CN 210597326 U CN210597326 U CN 210597326U
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Abstract
The utility model discloses an assembled precast concrete supporting structure, which comprises a plurality of suspension beams, a plurality of layers of supporting members supported between the continuous walls of a foundation pit, and suspension cables used for suspending each layer of the supporting members on the suspension beams; one end of the suspension beam is embedded in a soil layer on the outer side of the continuous wall, and the other end of the suspension beam extends towards the foundation pit; the supporting member comprises a plurality of supporting sections prefabricated by concrete, the adjacent supporting sections are detachably connected, and each supporting section is hung on the hanging beam through the hanging rope. The precast concrete supporting structure can be repeatedly disassembled and assembled for use, is convenient to disassemble and assemble on site, can effectively shorten the construction period, and saves the construction cost.
Description
Technical Field
The utility model belongs to the technical field of the supporting construction of underground building, concretely relates to precast concrete bearing structure that can assemble.
Background
When the underground building structure is built in an open-air excavation mode, the protective continuous wall of the foundation pit is built firstly, then the large-sized foundation pit is excavated, and because the deformation of the foundation pit is limited and the foundation pit has good load-bearing, waterproof and anti-seepage effects, a powerful cast-in-place concrete support is often required to be designed and built to support the continuous wall of the foundation pit, the deformation of the foundation pit is completely controlled, and the construction safety of the underground building structure is ensured.
The existing common design and construction method of cast-in-place concrete support needs to manufacture a reinforcement cage on site, install a template and then pour concrete to manufacture the concrete support after a foundation pit continuous wall is built and before a foundation pit is excavated in a large area; the cast-in-place concrete support which loses the protection effect is required to be dismantled in the later period of finishing the underground building structure; the construction of the underground building structure can be carried out, the design and the construction method occupy a large amount of construction time and manpower resources when the cast-in-place concrete support is built and dismantled, the cast-in-place concrete support is easily polluted by large dust when being dismantled, and the dismantled cast-in-place concrete support also becomes a large amount of construction waste, so that the construction period is prolonged and large resource waste is caused.
SUMMERY OF THE UTILITY MODEL
For solving the above technical problem, the utility model provides a precast concrete bearing structure that can assemble, its repeatedly dismouting is used, and on-the-spot easy dismounting, can shorten construction cycle effectively, practices thrift construction cost.
The utility model adopts the following technical scheme:
an assembled precast concrete supporting structure comprises a plurality of suspension beams, a plurality of layers of supporting members supported between continuous walls of a foundation pit, and suspension ropes for suspending each layer of the supporting members on the suspension beams;
one end of the suspension beam is embedded in a soil layer on the outer side of the continuous wall, and the other end of the suspension beam extends towards the foundation pit; the supporting member comprises a plurality of supporting sections prefabricated by concrete, the adjacent supporting sections are detachably connected, and each supporting section is hung on the hanging beam through the hanging rope.
Further, the supporting member further comprises a connecting assembly for connecting adjacent supporting segments, and the suspension cable is connected with the connecting assembly.
Furthermore, the connecting assembly comprises a U-shaped connecting piece with an upward opening end and a locking bolt which is connected with the opening end of the U-shaped connecting piece in a penetrating manner, and the suspension cable is connected with the locking bolt;
and a pouring seam is reserved between the adjacent supporting sections, and high-performance concrete or ultrahigh-performance concrete is filled in the pouring seam.
Furthermore, a pulley for adjusting a suspension cable is arranged on the locking bolt in a penetrating mode, and the suspension cable is wound on the pulley.
Furthermore, a connecting layer is arranged between the supporting member and the continuous wall, and the connecting layer is formed by pouring high-performance concrete or ultrahigh-performance concrete.
Furthermore, the support structure further comprises a vertical stress truss, the vertical stress truss is connected with the support member and the continuous wall respectively, and the vertical stress truss is supported at the bottom of the support member on the uppermost layer.
Furthermore, the suspension beam is of an inverted L shape, and one end of the suspension beam, which extends towards the foundation pit, is located right above the supporting section.
Further, the connecting ends of the support sections are coated with a release agent.
Furthermore, the supporting sections comprise I-shaped sections, L-shaped sections supported at the corners of the continuous wall, K-shaped sections arranged on the short side walls of the continuous wall, and Y-shaped sections arranged on the long side walls of the continuous wall;
an I-shaped section is connected between two side wings of the L-shaped section, the K-shaped section is connected between the L-shaped sections, and the Y-shaped section is arranged next to the L-shaped section and is connected with the K-shaped section through the I-shaped section.
Furthermore, the continuous wall also comprises a plurality of diagonal sections arranged on the side wall of the long side of the continuous wall, and each pair of diagonal sections are mutually symmetrical and connected through the I-shaped section.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a precast concrete bearing structure utilizes the multistage can dismantle the support section of connection and constitutes the supporting member that the multilayer is used for supporting the continuous wall jointly to suspend the support section in midair on the mounted beam through suspension cable, make this precast concrete bearing structure need not to realize the connection between the support section with the help of large-scale equipment of lifting by crane, avoid leading to the fact the problem that joint strength is not enough and probably leads to between the support section because of the support section dead weight. Meanwhile, the prefabricated supporting sections only need to be installed and connected on site, large-scale pouring on site is not needed, and the construction period of the foundation pit supporting structure can be greatly shortened. In addition, the supporting section used by the supporting structure can be repeatedly used, so that a large amount of construction waste can be avoided, the dust pollution in the process of dismantling the cast-in-place supporting structure is reduced, and the cost can be effectively saved.
Drawings
The technology of the present invention will be further described in detail with reference to the accompanying drawings and detailed description:
FIG. 1 is a top half-sectional view of the erectable precast concrete support structure of the present invention;
FIG. 2 is a top plan view, in full section, of the erectable precast concrete support structure of the present invention;
FIG. 3 is an enlarged view of detail C of FIG. 1;
FIG. 4 is a cross-sectional view A-A;
fig. 5 is an enlarged view of a portion D in fig. 4.
Description of the labeling:
1. a support member; 11. a support section; 111. a type I segment; 112. an L-shaped segment; 113. a K-type segment; 114. a Y-shaped segment; 115. an angular segment; 12. a connecting assembly; 121. a U-shaped connecting piece; 1211. an open end; 122. locking the bolt; 123. A pulley; 13. pouring seams; 2. a suspension cable; 3. a suspension beam; 4. a continuous wall; 41. short side walls; 42. a long side wall; 5. a soil layer; 6. a connecting layer; 7. a vertical stressed truss;
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1-4, the utility model discloses an assembled precast concrete supporting structure, which comprises a plurality of suspension beams 3, a plurality of layers of supporting members 1 supported between the continuous walls 4 of a foundation pit, and suspension ropes 2 used for suspending each layer of supporting members 1 on the suspension beams 3;
one end of the suspension beam 3 is embedded in a soil layer 5 on the outer side of the continuous wall 4, and the other end of the suspension beam extends towards the foundation pit; specifically, the suspension beam 3 is in an inverted L shape, and one end of the suspension beam 3 extending towards the foundation pit is located right above the supporting section 11.
The supporting member 1 comprises a plurality of supporting sections 11 prefabricated by concrete, the adjacent supporting sections 11 are detachably connected, and each supporting section 11 is respectively suspended on the suspension beam 3 through the suspension rope 2.
Based on the above structural design, the utility model discloses a precast concrete bearing structure utilizes the multistage can dismantle the support section 11 of connection and constitutes the multilayer jointly and be used for supporting continuous wall 4's supporting member 1 to suspend in midair on suspension beam 3 with support section 11 through suspension cable 2, make this precast concrete bearing structure need not to realize the connection between the support section 11 with the help of large-scale equipment of lifting by crane, avoid causing the problem that joint strength is not enough and probably lead to between the support section 11 because of support section 11 dead weight. Meanwhile, the prefabricated supporting sections 11 only need to be installed and connected on site, large-scale pouring on site is not needed, and the construction period of the foundation pit supporting structure can be greatly shortened. In addition, the supporting section 11 used by the supporting structure can be repeatedly used, so that a large amount of construction waste can be avoided, the dust pollution in the process of dismantling the cast-in-place supporting structure is reduced, and the cost can be effectively saved.
As an example, as shown in fig. 1 to 4, the supporting member 1 further includes a connecting assembly 12 for connecting adjacent supporting segments 11, and the suspension cord 2 is connected to the connecting assembly 12.
Specifically, the connecting assembly 12 includes a U-shaped connecting member 121 with an upward opening end, and a locking bolt 122 penetrating through the opening end 1211 of the U-shaped connecting member 121, and the suspension cable 2 is connected to the locking bolt 122;
a pouring seam 13 is reserved between the adjacent supporting sections 11, and high-performance concrete or ultrahigh-performance concrete is filled in the pouring seam 13.
By utilizing the U-shaped connecting piece 121 matched with high-performance concrete or ultra-high-performance concrete to connect the adjacent supporting sections 11, the connection between the adjacent supporting sections 11 is realized, and the size of the supporting member 1 can be adjusted within a certain range through adjusting the size of the U-shaped connecting piece 121 and the size of the pouring seam 13. The adaptability of the support section 11 is improved, and the support section 11 is beneficial to being recycled.
Wherein, a pulley 123 for adjusting the suspension cable 2 is arranged on the locking bolt 122 in a penetrating way, and the suspension cable 2 is wound on the pulley 123. The pulley 123 is connected to the suspension cable 2 to facilitate adjustment of the suspension position of the support section 11 on the suspension cable 2.
The connecting section of the supporting section 11 is coated with a release agent, so that the stress of the high-performance concrete or the ultra-high performance concrete after pouring and solidification is not influenced, the supporting section 11 is easy to disassemble, and the completeness of the supporting section 11 after disassembly is kept.
In the above embodiments, as shown in fig. 1 to 4, the connection layer 6 is provided between the support member 1 and the continuous wall 4, and the connection layer 6 is formed by pouring high-performance concrete or ultra-high-performance concrete. For the purpose of facilitating the disassembly, the side of the support section 11 facing the continuous wall 4 is coated with a release agent.
In the above embodiment, as shown in fig. 1 to 4, the support structure further includes a vertical stressed truss 7, the vertical stressed truss 7 is connected to the support member 1 and the continuous wall 4, respectively, and the vertical stressed truss 7 is supported at the bottom of the support member 1 on the uppermost layer. Because the supporting members 1 are sequentially suspended on the suspension ropes 2, the supporting member 1 at the uppermost layer bears larger vertical stress, and the stability of the supporting member 1 at the uppermost layer can be enhanced by additionally arranging the vertical stress truss 7 below the supporting member 1 at the uppermost layer.
In the above embodiment, as shown in fig. 1 to 4, the support section 11 includes an I-shaped section 111, an L-shaped section 112 supported at a corner of the continuous wall 4, a K-shaped section 113 provided on the short side wall 41 of the continuous wall 4, and a Y-shaped section 114 provided on the long side wall 42 of the continuous wall 4;
an I-shaped section 111 is connected between two side wings of the L-shaped section 112, a K-shaped section 113 is connected between the L-shaped sections 112, and a Y-shaped section 114 is arranged next to the L-shaped section 112 and is connected with the K-shaped section 113 through the I-shaped section 111.
And a plurality of diagonal segments 115 arranged on the long side wall 42 of the continuous wall 4, wherein each pair of diagonal segments 115 are symmetrical to each other and are connected through the I-shaped segment 111. The cross-section of the angled segment 115 is triangular.
Through the support sections 11 with different types, the quick installation and connection between the support sections 11 can be realized, and the stress stability of the support member 1 can be ensured.
Other contents of precast concrete bearing structure that can assemble see prior art, no longer describe herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a precast concrete bearing structure that can assemble which characterized in that: the device comprises a plurality of suspension beams, a plurality of layers of supporting members supported between continuous walls of a foundation pit, and suspension ropes for suspending each layer of the supporting members on the suspension beams;
one end of the suspension beam is embedded in a soil layer on the outer side of the continuous wall, and the other end of the suspension beam extends towards the foundation pit; the supporting member comprises a plurality of supporting sections prefabricated by concrete, the adjacent supporting sections are detachably connected, and each supporting section is hung on the hanging beam through the hanging rope.
2. The precast concrete support structure of claim 1, wherein: the support member further comprises a connecting assembly for connecting adjacent support segments, the suspension cord being connected to the connecting assembly.
3. The precast concrete support structure of claim 2, wherein: the connecting assembly comprises a U-shaped connecting piece with an upward opening end and a locking bolt which is connected with the opening end of the U-shaped connecting piece in a penetrating way, and the suspension cable is connected with the locking bolt;
and a pouring seam is reserved between the adjacent supporting sections, and high-performance concrete or ultrahigh-performance concrete is filled in the pouring seam.
4. The precast concrete support structure of claim 3, wherein: and a pulley for adjusting a suspension cable is arranged on the locking bolt in a penetrating manner, and the suspension cable is wound on the pulley.
5. The precast concrete support structure of claim 1, wherein: and a connecting layer is arranged between the supporting member and the continuous wall and is formed by pouring high-performance concrete or ultrahigh-performance concrete.
6. The precast concrete support structure of claim 1, wherein: the vertical stressed truss is connected with the supporting member and the continuous wall respectively, and is supported at the bottom of the supporting member on the uppermost layer.
7. The precast concrete support structure of claim 1, wherein: the suspension beam is of an inverted L shape, and one end, extending towards the foundation pit, of the suspension beam is located right above the supporting section.
8. The precast concrete support structure of claim 1, wherein: the connecting end of the support section is coated with a release agent.
9. The precast concrete support structure of claim 1, wherein: the supporting sections comprise I-shaped sections, L-shaped sections supported at the corners of the continuous wall, K-shaped sections arranged on the short side walls of the continuous wall and Y-shaped sections arranged on the long side walls of the continuous wall;
an I-shaped section is connected between two side wings of the L-shaped section, the K-shaped section is connected between the L-shaped sections, and the Y-shaped section is arranged next to the L-shaped section and is connected with the K-shaped section through the I-shaped section.
10. The precast concrete support structure of claim 9, wherein: the continuous wall is characterized by further comprising a plurality of diagonal sections arranged on the side wall of the long side of the continuous wall, wherein each pair of diagonal sections are mutually symmetrical and are connected through the I-shaped sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199884.2U CN210597326U (en) | 2019-07-26 | 2019-07-26 | Precast concrete bearing structure that can assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199884.2U CN210597326U (en) | 2019-07-26 | 2019-07-26 | Precast concrete bearing structure that can assemble |
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| Publication Number | Publication Date |
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| CN210597326U true CN210597326U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921199884.2U Active CN210597326U (en) | 2019-07-26 | 2019-07-26 | Precast concrete bearing structure that can assemble |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796330A (en) * | 2021-01-28 | 2021-05-14 | 中铁四局集团第二工程有限公司 | Suspension type concrete supporting device and mounting and dismounting method |
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2019
- 2019-07-26 CN CN201921199884.2U patent/CN210597326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796330A (en) * | 2021-01-28 | 2021-05-14 | 中铁四局集团第二工程有限公司 | Suspension type concrete supporting device and mounting and dismounting method |
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