CN210712866U - Local pit supporting system - Google Patents
Local pit supporting system Download PDFInfo
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- CN210712866U CN210712866U CN201921260005.2U CN201921260005U CN210712866U CN 210712866 U CN210712866 U CN 210712866U CN 201921260005 U CN201921260005 U CN 201921260005U CN 210712866 U CN210712866 U CN 210712866U
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- pit
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- fore shaft
- cushion layer
- support
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Abstract
The utility model provides a local pit supporting system, wherein the local pit is arranged at the bottom of a foundation pit, and a plain concrete cushion layer is poured at the bottom of the foundation pit; the support system comprises: the reinforcement cushion layer is arranged around the local deep pit excavation surface and poured at the bottom of the foundation pit, and the reinforcement cushion layer is connected with the plain concrete cushion layer; the locking opening beam is arranged on the periphery of the local deep pit excavation surface and poured at the bottom of the foundation pit, the locking opening beam is connected with the reinforcement cushion layer and is arranged on the steel support in the locking opening beam, and two ends of the steel support are respectively fixed with the locking opening beam. The utility model discloses support system structure is simple, the construction is convenient, and construction speed is fast, and the regional earthwork excavation of mainly used extra-deep (>2m) local pit adopts reinforcement bed course, fore shaft roof beam and steel support body system to form the support to local pit excavation face shape, guarantees the quality safety requirement of local pit excavation in-process, plays the effect of preventing collapsing.
Description
Technical Field
The utility model relates to a construction technical field relates to a local pit support system particularly.
Background
In the process of excavating the last layer of soil in the foundation pit, the plain concrete cushion layer is required to be poured along with excavation, but part of the plain concrete cushion layer partially falls into a pit (the falling depth is more than 2m), and the pouring of the plain concrete cushion layer is not enough to meet the quality and safety requirements in the process of excavating the earthwork, particularly the requirement of preventing collapse.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the utility model provides a local pit supporting system solves current local pit excavation and adopts plain concrete bed course to be not enough to satisfy the technical problem who satisfies quality, safety requirement in the earthwork excavation process, through the supporting system who adopts arrangement of reinforcement bed course, fore shaft roof beam and steel shotcrete, forms the support to local pit excavation face, guarantees the quality safety requirement of local pit excavation in-process.
In order to achieve the purpose, the utility model adopts the technical proposal that: providing a local pit supporting system, wherein a local pit is arranged at the bottom of a foundation pit, and a plain concrete cushion layer is poured at the bottom of the foundation pit; the support system comprises:
the local deep pit is arranged at the bottom of the foundation pit, and a plain concrete cushion layer is poured at the bottom of the foundation pit; the support system comprises:
the reinforcement cushion layer is arranged around the local deep pit excavation surface and poured at the bottom of the foundation pit, and the reinforcement cushion layer is connected with the plain concrete cushion layer;
the fore shaft beam is arranged on the periphery of the local deep pit excavation surface and poured at the bottom of the foundation pit, and the fore shaft beam is connected with the reinforcement cushion layer; and
and the steel support is arranged in the fore shaft beam, and two ends of the steel support are respectively fixed with the fore shaft beam.
In the embodiment of the utility model provides an in, pre-buried in the fore shaft roof beam have with the anchor assembly that the steel shotcrete is connected, anchor assembly is located on the relative both sides of fore shaft roof beam.
The embodiment of the utility model provides an in, anchor assembly includes the anchor board and is fixed in overlap joint section on the anchor board, the overlap joint section pre-buried in the fore shaft roof beam, the anchor board is located fore shaft roof beam internal surface with correspond steel shotcrete's end fixing.
In the embodiment of the utility model provides an in, the quantity of overlap joint section is a plurality of, and is a plurality of the overlap joint section along the direction of height interval arrangement of anchor board.
In the embodiment of the utility model provides an in, steel shotcrete is fixed with the waterstop all around in order to block the water entering in the local pit main structure around the local pit.
In the embodiment of the utility model provides an in, the arrangement of reinforcement bed course is located 6m within ranges around the local pit.
The embodiment of the utility model provides an in, the thickness of arrangement of reinforcement bed course is 300mm, the intraformational reinforcing bar of arrangement of reinforcement bed course is double-deck two-way arranging.
The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:
(1) the utility model discloses the earthwork excavation that the support system mainly used is super dark (>2m) local pit region adopts reinforcement bed course, fore shaft roof beam and steel support body system to form the support to local pit excavation shape of face, ensures earlier to prop the back and digs, and puts the slope and combine together, and the earthwork excavation security improves by a wide margin, guarantees the quality safety requirement of local pit excavation in-process, plays the effect of preventing collapsing.
(2) The utility model discloses support system structure is simple, the construction is convenient, and construction speed is fast, and the setting of stagnant water piece can stop the water in the local pit and get into the major structure steel in, improves major structure's waterproof performance, but steel shotcrete reuse, material saving.
Drawings
Fig. 1 is a schematic plan view of the local pit supporting system of the present invention.
Fig. 2 is a schematic view of a partial cross section of the construction of the local pit supporting system of the present invention.
Fig. 3 is a schematic structural view of the fore shaft beam and the reinforcement cushion of the present invention.
Fig. 4 is a schematic structural view of the anchoring plate of the present invention.
Fig. 5 is a side view of the anchor assembly of the present invention.
The correspondence of reference numerals to components is as follows:
a reinforcement cushion layer 1; reinforcing steel bars 11; a fore shaft 2; a steel support 3; an anchor 4; an anchor plate 41; an overlap segment 42; a water stop sheet 5; local deep pits 6; a side wall 61; a bottom plate 62.
Detailed Description
To facilitate understanding of the present invention, the following description is made with reference to the accompanying drawings and examples.
Referring to fig. 1 and 2, the utility model provides a local pit supporting system, wherein the local pit 6 is arranged at the bottom of the foundation pit, and a plain concrete cushion layer is poured at the bottom of the foundation pit; the support system comprises: the reinforcement cushion layer 1 is arranged around the local deep pit excavation surface and poured at the bottom of the foundation pit, and the reinforcement cushion layer 1 is connected with the plain concrete cushion layer; the fore shaft beam 2 is arranged on the periphery of the local deep pit excavation surface and poured at the bottom of the foundation pit, and the fore shaft beam 2 is connected with the reinforcement cushion layer 1; and the steel support 3 is arranged in the fore shaft beam 2, and two ends of the steel support 3 are respectively fixed with the fore shaft beam 2.
The utility model discloses the regional earthwork excavation of local pit of support system mainly used ultra-deep (>2m), adopt reinforcement cushion layer 1, fore shaft roof beam 2 and steel shotcrete 3 systems to form the support to local pit excavation face of face, guarantee the quality safety requirement of local pit excavation in-process, play the effect of preventing collapsing.
The embodiment of the utility model provides an in, reinforcing bar bed course 1 is located 6m within range around the local pit, reinforcing bar bed course 1's thickness is 300mm, as shown in fig. 3, reinforcing bar 11 in the reinforcing bar bed course 1 is double-deck two-way reinforcing bar to improve the intensity of bed course.
In the embodiment of the utility model, as shown in fig. 2, pre-buried in fore shaft roof beam 2 have with anchor assembly 4 that steel shotcrete 3 is connected, anchor assembly 4 is located the relative both sides of fore shaft roof beam 2. Specifically, as shown in fig. 4 and 5, the anchoring member 4 includes an anchoring plate 41 and an overlapping section 42 fixed to the anchoring plate 41, the overlapping section 42 is perpendicular to the anchoring plate 41, the overlapping section 42 is embedded in the fore shaft beam 2, and the anchoring plate 42 is disposed on the inner surface of the fore shaft beam 2 to be fixed to the end of the corresponding steel support 3.
In the embodiment of the utility model provides an in, anchor plate 41 pastes and locates the internal surface of fore shaft roof beam 2 corresponds overlap joint section 42 is inserted and is located in the fore shaft roof beam 2 and with the concrete anchor of fore shaft roof beam 2, the quantity of overlap joint section 42 is a plurality of, and is a plurality of overlap joint section 42 along length direction, the width direction interval arrangement of anchor plate 41, in order to improve anchor assembly 4 with the fastness of connection between the fore shaft roof beam 2.
Preferably, the fore shaft beam 2 is a concrete fore shaft beam, the specification of the fore shaft beam 2 is 500 × 500mm, and a reinforcing mesh is embedded in the fore shaft beam 2 to improve the structural strength of the fore shaft beam 2.
In the embodiment of the utility model, as shown in fig. 2, steel shotcrete 3 is fixed with stagnant water piece 5 all around in order to block the water entering in the local pit major structure around the local pit. The main structure includes a sidewall 61 and a bottom plate 62.
The structure of the local pit supporting system of the present invention is described above, and the construction method thereof is described below.
As shown in fig. 2, the black slope line is a slope line, the dotted line is a side line of the main structure, and the outer side of the side wall 61 of the main structure is a ground enclosing wall;
firstly, constructing a reinforcement cushion layer 1, a fore shaft beam 2, a steel support 3 and a water stop sheet 5 on a local deep pit excavation surface, and then excavating according to a slope line; the water stop sheets 5 are fixed on the periphery of the steel support 3 and are embedded in the main body structure;
after excavation, erecting a formwork and pouring a side wall 61 and a bottom plate 62, and reserving a local deep pit 6 in the formwork erecting process;
and finally, cutting off the steel support 3 in the local deep pit 6.
The present invention has been described in detail with reference to the drawings and the embodiments, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (7)
1. A local pit supporting system is characterized in that a local pit is arranged at the bottom of a foundation pit, and a plain concrete cushion layer is poured at the bottom of the foundation pit; characterized in that the support system comprises:
the reinforcement cushion layer is arranged around the local deep pit excavation surface and poured at the bottom of the foundation pit, and the reinforcement cushion layer is connected with the plain concrete cushion layer;
the fore shaft beam is arranged on the periphery of the local deep pit excavation surface and poured at the bottom of the foundation pit, and the fore shaft beam is connected with the reinforcement cushion layer; and
and the steel support is arranged in the fore shaft beam, and two ends of the steel support are respectively fixed with the fore shaft beam.
2. The local pit support system according to claim 1, characterized in that anchors connected to the steel supports are embedded in the fore shaft beams, the anchors being located on opposite sides of the fore shaft beams.
3. The system of claim 2, wherein the anchor comprises an anchor plate and an overlapping section fixed to the anchor plate, the overlapping section is embedded in the fore shaft beam, and the anchor plate is arranged on the inner surface of the fore shaft beam to be fixed to the end of the corresponding steel support.
4. The system of claim 3, wherein the number of the overlapping sections is plural, and the overlapping sections are arranged at intervals along the height direction of the anchoring plate.
5. The system of claim 1, wherein water stops are fixed around the steel support to prevent water in the local pit from entering the main structure around the local pit.
6. The local pit support system of claim 1, wherein the tendon cushion is located within 6m of the local pit circumference.
7. The local pit support system according to claim 1, characterized in that the thickness of the reinforcing mat layer is 300mm, and the reinforcing steel bars in the reinforcing mat layer are arranged in a double-layer bidirectional manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921260005.2U CN210712866U (en) | 2019-08-06 | 2019-08-06 | Local pit supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921260005.2U CN210712866U (en) | 2019-08-06 | 2019-08-06 | Local pit supporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210712866U true CN210712866U (en) | 2020-06-09 |
Family
ID=70964574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921260005.2U Active CN210712866U (en) | 2019-08-06 | 2019-08-06 | Local pit supporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210712866U (en) |
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2019
- 2019-08-06 CN CN201921260005.2U patent/CN210712866U/en active Active
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