CN212477756U - Deep basal pit inverted arch prestressed concrete bearing structure - Google Patents
Deep basal pit inverted arch prestressed concrete bearing structure Download PDFInfo
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- CN212477756U CN212477756U CN202020938352.2U CN202020938352U CN212477756U CN 212477756 U CN212477756 U CN 212477756U CN 202020938352 U CN202020938352 U CN 202020938352U CN 212477756 U CN212477756 U CN 212477756U
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Abstract
An inverted arch prestressed concrete support structure for a deep foundation pit, said support structure comprising: the foundation pit enclosure pile wall is used for installing a concrete waist beam; the concrete waist beam is used for installing the concrete ring beam; the concrete wale is tightly attached to the inner wall of the foundation pit enclosure pile wall; the concrete supporting beam is used for supporting the concrete ring beam; the first end of the concrete support beam is connected with the inner wall of the concrete waist beam, and the second end of the concrete support beam is connected with the concrete ring beam; the concrete ring beam is used for installing a concrete template so as to pour concrete and form a deep foundation pit; and the outer side wall of the concrete ring beam is connected with the concrete formwork. On one hand, before and during excavation of the foundation pit, prestress is applied in a grading manner to control deformation of the foundation pit, so that the protection level of the surrounding environment is improved; on the other hand, through setting up ring beam and the anti-arched girder of prestressing force, improve horizontal bearing structure wholeness, and can reduce the cross-section of ring beam, reduce the quantity of stake.
Description
Technical Field
The utility model belongs to the technical field of building engineering, concretely relates to deep basal pit invert prestressed concrete bearing structure.
Background
The development of underground spaces of large and medium-sized cities in China is increased, the surrounding environment of the underground spaces is more and more complex, more and more accidents are caused by foundation pit deformation, and the development of the underground spaces is influenced to different degrees. At present, a common reinforced concrete support beam is mostly adopted for supporting a deep and large foundation pit, and the large foundation pit has larger deformation in the middle part of the large foundation pit due to the influence of space effect and even exceeds the requirement of environmental protection at the periphery; meanwhile, the common concrete ring beam has a large cross section and a large number of vertical supports, so that the construction of the main structure of the horizontal support beam is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a deep basal pit invert prestressed concrete bearing structure, include:
the foundation pit enclosure pile wall is used for installing a concrete waist beam;
the concrete waist beam is used for installing the concrete ring beam; the concrete wale is tightly attached to the inner wall of the foundation pit enclosure pile wall;
the concrete supporting beam is used for supporting the concrete ring beam; the first end of the concrete support beam is connected with the inner wall of the concrete waist beam, and the second end of the concrete support beam is connected with the concrete ring beam;
the concrete ring beam is used for installing a concrete template so as to pour concrete and form a deep foundation pit; and the outer side wall of the concrete ring beam is connected with the concrete formwork.
Preferably, the method further comprises the following steps: the concrete is to propping the roof beam, the concrete is to propping two relative concrete waist rail is connected respectively at roof beam both ends, and passes the concrete ring roof beam.
Preferably, the method further comprises the following steps: the prestressed beam fixing end is connected with the inner wall of the concrete wale, the second end of the prestressed beam fixing end is connected with the outer wall of the concrete ring beam, and the first end of the prestressed beam tensioning end is connected with the inner wall of the concrete wale and the second end of the prestressed beam tensioning end is connected with the outer wall of the concrete ring beam.
Preferably, the method further comprises the following steps: the fixed end anchorage device is arranged on the fixed end of the prestressed beam, and the tensioning end anchorage device is arranged on the tensioning end of the prestressed beam.
Preferably, the method further comprises the following steps: and the first end of the inverted arch prestressed supporting beam penetrates through the fixed end anchorage device to be connected with the fixed end of the prestressed beam, and the second end of the inverted arch prestressed supporting beam penetrates through the tensioning end anchorage device to be connected with the tensioning end of the prestressed beam and penetrates through the concrete ring beam.
Preferably, the method further comprises the following steps: the corner unbonded prestressed tendon is arranged in the inverted arch prestressed supporting beam, the first end of the corner unbonded prestressed tendon is connected with the fixed end of the prestressed beam, and the second end of the corner unbonded prestressed tendon is connected with the tensioning end of the prestressed beam.
Preferably, the method further comprises the following steps: the middle unbonded prestressed tendon is arranged in the inverted arch prestressed supporting beam, the first end of the middle unbonded prestressed tendon is connected with the fixed end of the prestressed beam, and the second end of the middle unbonded prestressed tendon is connected with the tensioning end of the prestressed beam.
Preferably, the method further comprises the following steps: and the reinforcing steel bar is arranged inside the inverted arch prestress supporting beam, and two ends of the reinforcing steel bar are respectively arranged in the fixed end anchorage device and the tensioning end anchorage device.
Preferably, the method further comprises the following steps: the tree stock pile steel stand, the tree stock pile steel stand set up in concrete ring beam bottom.
The deep foundation pit inverted arch prestressed concrete supporting structure is suitable for the field of deformation control of high and large deep foundation pits with high protection requirements, such as sensitive buildings, pipelines or rail transit, and the like at the periphery, and on one hand, the deformation of the foundation pit is controlled by applying prestress in stages before and during excavation of the foundation pit, so that the protection level of the surrounding environment is improved; on the other hand, through setting up ring beam and the anti-arched girder of prestressing force, improve horizontal bearing structure wholeness, and can reduce the cross-section of ring beam, reduce the quantity of stake.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic top view of an inverted arch prestressed concrete supporting structure for a deep foundation pit according to the present invention;
fig. 2 is a schematic view of a cross-sectional structure of an inverted arch prestressed concrete supporting structure for a deep foundation pit provided by the present invention;
fig. 3 is a schematic front view structural diagram of an inverted arch prestressed supporting beam in the inverted arch prestressed concrete supporting structure of the deep foundation pit provided by the utility model;
fig. 4 is the utility model provides a pair of among deep basal pit invert prestressed concrete bearing structure invert prestressed supporting beam's elevation structure sketch map.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, including: the foundation pit enclosure pile wall 1, the concrete waist beam 2, the concrete support beam 3 and the concrete ring beam 4 are described in detail below.
Referring to fig. 1 to 4, in an embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, including:
the foundation pit enclosure pile wall 1 is used for installing a concrete wale 2;
the concrete waist beam 2 is used for installing the concrete ring beam 4; the concrete wale 2 is tightly attached to the inner wall of the foundation pit enclosure pile wall 1;
a concrete support beam 3 for supporting the concrete ring beam 4; the first end of the concrete support beam 3 is connected with the inner wall of the concrete wale 2, and the second end of the concrete support beam is connected with the concrete ring beam 4;
the concrete ring beam 4 is used for installing a concrete template so as to pour concrete and form a deep foundation pit; the outer side wall of the concrete ring beam 4 is connected with the concrete formwork.
When a deep foundation pit is built, firstly, a foundation pit enclosure pile wall 1 is arranged on the periphery of an underground project of a building project, then a concrete waist beam 2 is arranged along the inner wall of the foundation pit enclosure pile wall 1, then a concrete template and a concrete ring beam 4 are arranged at a preset position, the outer side wall of the concrete ring beam 4 is connected with the concrete template, and then concrete is poured along the concrete template to form the deep foundation pit; at last, a plurality of places between concrete wale 2 and concrete ring roof beam 4 set up concrete supporting beam 3, and the first end of concrete supporting beam 3 is connected with 2 interior wall connections of concrete wale and the second end is connected with concrete ring roof beam 4 for support concrete ring roof beam 4, and then support the concrete form, make the deep basal pit that forms have fine support, non-deformable.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: the concrete is to propping roof beam 5, the concrete is to propping 5 both ends of roof beam and connecting two relatively respectively the concrete wale 2, and pass the concrete ring roof beam 4. The concrete opposite-supporting beam 5 is used for supporting the two opposite concrete wales 2 and enhancing the stability between the concrete ring beam 4 and the concrete wales 2.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: the prestressed beam fixing end 9 and the prestressed beam tensioning end 10 are arranged, wherein the prestressed beam fixing end 9 is connected with the inner wall of the concrete wale 2 at the first end and is connected with the outer wall of the concrete ring beam 4 at the second end, and the prestressed beam tensioning end 10 is connected with the inner wall of the concrete wale 2 at the first end and is connected with the outer wall of the concrete ring beam 4 at the second end. The prestressed beam fixing end 9 and the prestressed beam tensioning end 10 can be used for connecting the inner wall of the concrete wale 2 and the outer wall of the concrete ring beam 4, and meanwhile, the stability between the concrete wale 2 and the concrete ring beam 4 is enhanced.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: the prestressed concrete ring beam comprises a fixed end anchorage device 13, a tensioning end anchorage device 14 and an inverted arch prestressed supporting beam 6, wherein the fixed end anchorage device 13 is arranged on the prestressed beam fixed end 9, the tensioning end anchorage device 14 is arranged on the prestressed beam tensioning end 10, the first end of the inverted arch prestressed supporting beam 6 penetrates through the fixed end anchorage device 13 to be connected with the prestressed beam fixed end 9, and the second end of the inverted arch prestressed supporting beam 6 penetrates through the tensioning end anchorage device 14 to be connected with the prestressed beam tensioning end 10 and penetrates through the concrete ring beam 4. The fixed end anchorage 13 and the tensioning end anchorage 14 can be used for fixing two ends of the inverted arch prestressed supporting beam 6, and the inverted arch prestressed supporting beam 6 can be used for enhancing the stability among the concrete ring beam 4, the prestressed beam fixed end 9 and the prestressed beam tensioning end 10.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: the corner unbonded prestressed tendon 7 is arranged in the inverted arch prestressed supporting beam 6, and the first end of the corner unbonded prestressed tendon 7 is connected with the prestressed beam fixing end 9 while the second end is connected with the prestressed beam tensioning end 10. The corner unbonded prestressed tendon 7 is arranged inside the inverted arch prestressed supporting beam 6 and can be used for enhancing the strength of the inverted arch prestressed supporting beam 6, so that the stability among the concrete ring beam 4, the prestressed beam fixed end 9 and the prestressed beam tensioning end 10 is enhanced.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: the middle part is provided with a prestressed tendon 8 without bonding, the middle part is provided with the prestressed tendon 8 without bonding inside the inverted arch prestressed supporting beam 6, the first end is connected with the prestressed beam fixed end 9, and the second end is connected with the prestressed beam tensioning end 10. The middle unbonded prestressed tendons 8 are arranged inside the inverted arch prestressed supporting beam 6 and can be used for enhancing the strength of the inverted arch prestressed supporting beam 6 together with the corner unbonded prestressed tendons 7, so that the stability among the concrete ring beam 4, the prestressed beam fixed end 9 and the prestressed beam tensioning end 10 is enhanced.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: and the reinforcing steel bar 11 is arranged inside the inverted arch prestress supporting beam 6, and two ends of the reinforcing steel bar 11 are respectively arranged in the fixed end anchorage device 13 and the tensioning end anchorage device 14. The reinforcing steel bars 11 are arranged inside the inverted arch prestressed supporting beam 6 and can be used for enhancing the strength of the inverted arch prestressed supporting beam 6 together with the corner unbonded prestressed tendons 7 and the middle unbonded prestressed tendons 8, so that the stability among the concrete ring beam 4, the prestressed beam fixed end 9 and the prestressed beam tensioning end 10 is enhanced.
As shown in fig. 1 to 4, in the embodiment of the present application, the present application provides an inverted arch prestressed concrete support structure for a deep foundation pit, further comprising: and the tree-stock pile steel upright 12 is arranged at the bottom of the concrete ring beam 4. The staked steel studs 12 may be used to support the concrete ring beam 4 to meet different height requirements.
The deep foundation pit inverted arch prestressed concrete supporting structure is suitable for the field of deformation control of high and large deep foundation pits with high protection requirements, such as sensitive buildings, pipelines or rail transit, and the like at the periphery, and on one hand, the deformation of the foundation pit is controlled by applying prestress in stages before and during excavation of the foundation pit, so that the protection level of the surrounding environment is improved; on the other hand, through setting up ring beam and the anti-arched girder of prestressing force, improve horizontal bearing structure wholeness, and can reduce the cross-section of ring beam, reduce the quantity of stake.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. The utility model provides a deep basal pit invert prestressed concrete bearing structure which characterized in that includes:
the foundation pit enclosure pile wall is used for installing a concrete waist beam;
the concrete waist beam is used for installing the concrete ring beam; the concrete wale is tightly attached to the inner wall of the foundation pit enclosure pile wall;
the concrete supporting beam is used for supporting the concrete ring beam; the first end of the concrete support beam is connected with the inner wall of the concrete waist beam, and the second end of the concrete support beam is connected with the concrete ring beam;
the concrete ring beam is used for installing a concrete template so as to pour concrete and form a deep foundation pit; and the outer side wall of the concrete ring beam is connected with the concrete formwork.
2. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 1, further comprising: the concrete is to propping the roof beam, the concrete is to propping two relative concrete waist rail is connected respectively at roof beam both ends, and passes the concrete ring roof beam.
3. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 1, further comprising: the prestressed beam fixing end is connected with the inner wall of the concrete wale, the second end of the prestressed beam fixing end is connected with the outer wall of the concrete ring beam, and the first end of the prestressed beam tensioning end is connected with the inner wall of the concrete wale and the second end of the prestressed beam tensioning end is connected with the outer wall of the concrete ring beam.
4. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 3, further comprising: the fixed end anchorage device is arranged on the fixed end of the prestressed beam, and the tensioning end anchorage device is arranged on the tensioning end of the prestressed beam.
5. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 4, further comprising: and the first end of the inverted arch prestressed supporting beam penetrates through the fixed end anchorage device to be connected with the fixed end of the prestressed beam, and the second end of the inverted arch prestressed supporting beam penetrates through the tensioning end anchorage device to be connected with the tensioning end of the prestressed beam and penetrates through the concrete ring beam.
6. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 5, further comprising: the corner unbonded prestressed tendon is arranged in the inverted arch prestressed supporting beam, the first end of the corner unbonded prestressed tendon is connected with the fixed end of the prestressed beam, and the second end of the corner unbonded prestressed tendon is connected with the tensioning end of the prestressed beam.
7. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 5, further comprising: the middle unbonded prestressed tendon is arranged in the inverted arch prestressed supporting beam, the first end of the middle unbonded prestressed tendon is connected with the fixed end of the prestressed beam, and the second end of the middle unbonded prestressed tendon is connected with the tensioning end of the prestressed beam.
8. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 5, further comprising: and the reinforcing steel bar is arranged inside the inverted arch prestress supporting beam, and two ends of the reinforcing steel bar are respectively arranged in the fixed end anchorage device and the tensioning end anchorage device.
9. The inverted arch prestressed concrete support structure for deep foundation pits according to claim 1, 2, 3 or 5, further comprising: the tree stock pile steel stand, the tree stock pile steel stand set up in concrete ring beam bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938352.2U CN212477756U (en) | 2020-05-28 | 2020-05-28 | Deep basal pit inverted arch prestressed concrete bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938352.2U CN212477756U (en) | 2020-05-28 | 2020-05-28 | Deep basal pit inverted arch prestressed concrete bearing structure |
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| Publication Number | Publication Date |
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| CN212477756U true CN212477756U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020938352.2U Active CN212477756U (en) | 2020-05-28 | 2020-05-28 | Deep basal pit inverted arch prestressed concrete bearing structure |
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