CN110714467A - Deep foundation pit supporting system - Google Patents
Deep foundation pit supporting system Download PDFInfo
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- CN110714467A CN110714467A CN201911037384.3A CN201911037384A CN110714467A CN 110714467 A CN110714467 A CN 110714467A CN 201911037384 A CN201911037384 A CN 201911037384A CN 110714467 A CN110714467 A CN 110714467A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a deep foundation pit supporting system which comprises a steel support, a sliding chute, a single-sided sliding block and a double-sided sliding block, wherein the steel support is arranged on the steel support; the sliding groove is in a long-strip straight plate shape, and the edges of two sides of the sliding groove are provided with opposite inverted L-shaped convex edges to form a groove I capable of guiding; the single-sided sliding block is in a rectangular block shape, and a convex block I with a convex end face is arranged on the bottom surface of the single-sided sliding block; the double-sided sliding block is in a rectangular block shape, the bottom surface of the double-sided sliding block is provided with a convex block II with a convex end surface, and the edges of two sides of the top surface of the double-sided sliding block are provided with opposite inverted L-shaped convex edges to form a groove II capable of guiding; the double-sided sliding block is provided with a through hole which is communicated with the front and the back; a movable cushion block is arranged in the through hole; the sliding groove and the double-sided sliding block are combined and then installed on the side wall of the foundation pit, and the sliding groove and the single-sided sliding block are combined and then installed on the lattice column; the sliding groove is provided with a limiting structure which can limit the movement of the single-sided sliding block or the double-sided sliding block. The invention can realize the different-surface sliding of the steel support in the vertical direction.
Description
Technical Field
The invention relates to a building component, in particular to a supporting system for an open cut foundation pit, and specifically relates to a supporting system for a deep foundation pit.
Background
At present, an open cut foundation pit, especially a deep foundation pit, needs to be supported on the side wall by using a steel support system in the excavation process, so that collapse of the foundation pit is prevented. When the supporting part needs to be replaced, the original steel support is usually dismantled by hoisting and segmenting, and the steel support is hoisted, segmented, assembled and erected after the length of the steel support is readjusted. The method not only needs to occupy a large number of hoisting equipment for a long time, but also has a series of defects of complex working procedures, long construction period, high difficulty in protecting the upper steel support and the concrete support and the like. Therefore, it is urgently required to develop a new steel supporting system to solve the above problems.
Disclosure of Invention
The invention aims to provide a deep foundation pit supporting system aiming at the defects of the prior art, which can realize the different-surface sliding of a steel support in the vertical direction, so that the steel support is more flexible and convenient to change, the construction efficiency is improved, and the production cost is reduced.
The technical scheme of the invention is as follows:
a deep foundation pit supporting system comprises a steel support, a sliding chute, a single-sided sliding block and a double-sided sliding block;
the sliding groove is in a long-strip straight plate shape, and the edges of two sides of the sliding groove are provided with opposite inverted L-shaped convex edges to form a groove I capable of guiding;
the single-sided sliding block is in a rectangular block shape, and a convex block I with a convex end face is arranged on the bottom surface of the single-sided sliding block; the big end of the lug I can be embedded into the groove I, so that the single-sided sliding block can move along the sliding groove; the end surface of the single-sided slide block is provided with a supporting piece;
the double-sided sliding block is in a rectangular block shape, the bottom surface of the double-sided sliding block is provided with a convex block II with a convex end surface, and the edges of two sides of the top surface of the double-sided sliding block are provided with opposite inverted L-shaped convex edges to form a groove II capable of guiding; the lug II can be embedded into the groove I, so that the double-sided sliding block can move along the sliding groove; the end part of the steel support can be placed in the groove II and moves along the groove II; the width of the groove I is consistent with that of the groove II; the thickness of the double-sided sliding block is equivalent to the sliding distance of the steel support different surfaces;
the double-sided sliding block is provided with a through hole which is communicated with the front and the back; the diameter of the through hole is larger than that of the end face of the steel support; a movable cushion block is arranged in the through hole; two ends of the cushion block can respectively abut against the plate surface of the sliding chute and the end surface of the steel support;
the sliding chute and the double-sided sliding block are combined and then installed on the side wall of the foundation pit, so that two ends of the steel support are respectively abutted against different double-sided sliding blocks and can move up and down along with the double-sided sliding blocks; the sliding groove and the single-sided sliding block are combined and then are arranged on the lattice column, and the middle part of the steel support can be supported by the supporting piece;
the sliding groove is provided with a limiting structure which can limit the movement of the single-sided sliding block or the double-sided sliding block.
Further, the limiting structure comprises a limiter; the limiting stopper is arranged on the outer sides of the side walls on the two sides of the sliding groove, and a mounting hole penetrating through the side wall of the sliding groove is formed in the mounting position of the limiting stopper, so that a limiting rod on the limiting stopper can penetrate through the mounting hole and extend into the groove I; the lateral edges of the convex block I or the convex block II are both in a sawtooth shape, so that the limiting rod can be clamped into the sawtooth shape to prevent the convex block I or the convex block II from moving.
Furthermore, the supporting piece is made of I-shaped steel, the length of the supporting piece is larger than the width of the single-face sliding block, and the supporting piece is installed on the end face of the single-face sliding block in a cantilever mode.
Furthermore, the cushion block is cylindrical, the diameter of the cushion block is equivalent to the end face of the steel support, and the length of the cushion block is equivalent to the length of the through hole.
The invention has the beneficial effects that:
1. the steps that in the traditional support changing process, the original steel support needs to be hoisted and dismantled in a segmented mode, the length of the steel support is readjusted, and then the steel support is hoisted, spliced and erected in a segmented mode can be avoided, and the support changing process is simplified.
2. The steel support can conveniently and vertically move in the range of the foundation pit, the arrangement position and the number of the steel support are convenient to optimize, and the construction cost is reduced.
3. The traditional steel support replacement process can be avoided, and the impact risk caused by the upper support due to hoisting dismantling and hoisting installation can be avoided.
4. The thickness parameter of accessible regulation two-sided slider realizes the different face of different side wall thicknesses and slides.
5. The support replacing process can be optimized, and the construction period is shortened.
Drawings
FIG. 1 is a schematic view of the present invention prior to a change of struts in use.
Fig. 2 is a schematic view of the present invention after the support is replaced.
Fig. 3 is a schematic view of the structure of the chute of the present invention.
FIG. 4 is a schematic structural view of a single sided slider and support member of the present invention.
FIG. 5 is a schematic view of the structure of the double-sided slider and spacer of the present invention.
Figure 6 is a schematic view of the retainer of the present invention in a clamped condition.
Fig. 7 is a schematic view of the released state of the stopper of the present invention.
Wherein: 1-underground diaphragm wall; 2-double-sided slide block; 201-bump II; 202-groove II; 203-a via hole; 204-cushion block; 3-a chute; 301-groove I; 4-steel support; 5-single-sided slide block; 501-bump I; 6-a support member; 7-lattice columns; 8-mounting holes; 9-a stopper; 901-a limiting rod; 10-main body side wall.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1-7.
A deep foundation pit supporting system comprises a steel support 4, a sliding groove 3, a single-sided sliding block 5 and a double-sided sliding block 2.
The sliding groove 3 is in a long strip straight plate shape, and opposite inverted L-shaped convex edges are arranged on the edges of two sides of the sliding groove to form a groove I301 capable of guiding.
The single-sided sliding block 5 is in a rectangular block shape, and a convex block I501 with a convex end face is arranged on the bottom face of the single-sided sliding block; the big end of the convex block I501 can be embedded into the groove I301, so that the single-sided sliding block 5 can move along the sliding groove 3; the end face of the single-face slide block 5 is provided with a support piece 6 which can enhance the support of the middle part of the steel support 4. Preferably, the supporting member 6 is made of i-steel, has a length greater than the width of the single-sided slider 5, and is cantilever-mounted on the end surface of the single-sided slider 5.
The double-sided sliding block 2 is in a rectangular block shape, the bottom surface of the double-sided sliding block is provided with a convex block II201 with a convex end face, and the edges of two sides of the top surface of the double-sided sliding block are provided with opposite inverted L-shaped convex edges to form a groove II202 capable of guiding; the lug II201 can be embedded into the groove I301, so that the double-sided sliding block 2 can move along the sliding groove 3; the end of the steel support 4 can be placed in the groove II202 and moved along the groove II 202. The width of the groove I301 is consistent with that of the groove II202, and the thickness of the double-sided sliding block 2 is equivalent to the distance of the steel support 4 in different-surface sliding, so that the double-sided sliding block 2 can be in butt joint with the sliding groove 3, and the different-surface sliding of the steel support 4 is realized.
The sliding groove 3 and the double-sided sliding block 2 are combined and then installed on the side wall of the foundation pit, so that two ends of the steel support 4 are respectively lower than the different double-sided sliding blocks 2 and can move up and down along with the double-sided sliding blocks 2. The side wall of the foundation pit comprises a ground connecting wall 1 positioned at the upper part and a main body side wall 10 positioned at the lower part. The two sliding chutes 3 are positioned on the same vertical line, and the steel support 4 can move up and down along the two sliding chutes. Meanwhile, the sliding groove 3 and the single-face sliding block 5 are combined and then are arranged on the lattice column 7, so that the supporting piece 6 can support the middle part of the steel support 4 to support the steel support. Preferably, the combination of the sliding grooves 3 and the single-sided sliding blocks 5 on the lattice column 7 can be two groups, and the two groups are respectively positioned on two sides of the lattice column 7, so that the supporting capacity is improved.
A through hole 203 which is through from front to back is arranged on the double-sided sliding block 2; the diameter of the through hole 203 is larger than the diameter of the end face of the steel support 4; the through hole 203 is provided with a spacer 204. The spacer 204 is cylindrical, has a diameter corresponding to the end face of the steel support 4 and a length corresponding to the through hole 203, so that it can move freely in the through hole 203. The two ends of the cushion block 204 can be tightly abutted against the plate surface of the sliding chute 3 and the end surface of the steel support 4 respectively, and the degree of freedom of the steel support 4 in the axis direction is extended, so that when the steel support 4 applies pressure in the axial direction, the axial force is not transmitted to the double-sided sliding block 2 any more, but is directly transmitted to the sliding chute 3 through the cushion block 204, and the influence of the pressure of the steel support 4 on the double-sided sliding block 2 is avoided.
And the sliding groove 3 is provided with a limiting structure which can limit the movement of the single-sided sliding block 5 or the double-sided sliding block 2. The limiting structure comprises a limiter 9; the stopper 9 is installed on the outer side of the side walls of the two sides of the sliding chute 3, and an installation hole 8 penetrating through the side wall of the sliding chute 3 is arranged at the installation position of the stopper 9, so that the limiting rod 901 on the stopper 9 can penetrate through the installation hole 8 and extend into the groove I301. The side edge of the bump I501 or the bump II201 is serrated, so that the limiting rod 601 can be clamped into the bump I501 or the bump II201 to prevent the bump I501 or the bump II201 from moving, and the single-sided slider 5 or the double-sided slider 2 is stabilized.
The using method of the invention comprises the following steps:
and sliding chutes are respectively arranged on the corresponding ground connection wall and the main body side wall which need to be supported in the foundation pit, and the sliding chutes on the same side are positioned on the same vertical line. Then, double-sided sliding blocks with the thickness equivalent to the protruding distance of the side wall of the main body are selected and installed in sliding grooves of the ground connecting wall, and the corresponding double-sided sliding blocks are fixed at the same height through the limiting device. Then, two ends of the steel support are abutted against the cushion blocks of the double-sided sliding block, and the movable head on the steel support is adjusted until the movable head is completely abutted against the steel support, so that the diaphragm wall is supported. When the steel support needs to be moved to the main body side wall at the lower part, the moving head of the steel support can be loosened, then the limiting device is opened, and the double-faced sliding block slides downwards along the sliding groove until the upper end of the main body side wall. At the moment, the double-sided sliding block stops moving due to the blocking of the main body side wall, however, the groove II in the double-sided sliding block is connected with the groove II in the sliding groove in the main body side wall, so that the steel support can smoothly slide into the sliding groove in the main body side wall. And then, tightly supporting the steel support against the sliding groove on the side wall of the main body to realize the support of the side wall of the main body. In order to avoid the middle part of the steel support from collapsing, a lattice column can be erected in the middle of the foundation pit, and a sliding groove and a single-sided sliding block are arranged on the lattice column. The height of the single-face sliding block is adjusted to a proper height through the limiting device, so that the supporting piece on the single-face sliding block can support the middle part of the steel support to support the steel support. When the steel support moves downwards, the single-sided sliding block also moves downwards together and is stabilized again at a proper position, and the steel support is continuously supported and reinforced.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (4)
1. The utility model provides a deep basal pit braced system which characterized by: comprises a steel support, a sliding chute, a single-sided sliding block and a double-sided sliding block;
the sliding groove is in a long-strip straight plate shape, and the edges of two sides of the sliding groove are provided with opposite inverted L-shaped convex edges to form a groove I capable of guiding;
the single-sided sliding block is in a rectangular block shape, and a convex block I with a convex end face is arranged on the bottom surface of the single-sided sliding block; the big end of the lug I can be embedded into the groove I, so that the single-sided sliding block can move along the sliding groove; the end surface of the single-sided slide block is provided with a supporting piece;
the double-sided sliding block is in a rectangular block shape, the bottom surface of the double-sided sliding block is provided with a convex block II with a convex end surface, and the edges of two sides of the top surface of the double-sided sliding block are provided with opposite inverted L-shaped convex edges to form a groove II capable of guiding; the lug II can be embedded into the groove I, so that the double-sided sliding block can move along the sliding groove; the end part of the steel support can be placed in the groove II and moves along the groove II; the width of the groove I is consistent with that of the groove II; the thickness of the double-sided sliding block is equivalent to the sliding distance of the steel support different surfaces;
the double-sided sliding block is provided with a through hole which is communicated with the front and the back; the diameter of the through hole is larger than that of the end face of the steel support; a movable cushion block is arranged in the through hole; two ends of the cushion block can respectively abut against the plate surface of the sliding chute and the end surface of the steel support;
the sliding chute and the double-sided sliding block are combined and then installed on the side wall of the foundation pit, so that two ends of the steel support are respectively abutted against different double-sided sliding blocks and can move up and down along with the double-sided sliding blocks; the sliding groove and the single-sided sliding block are combined and then are arranged on the lattice column, and the middle part of the steel support can be supported by the supporting piece;
the sliding groove is provided with a limiting structure which can limit the movement of the single-sided sliding block or the double-sided sliding block.
2. The deep foundation pit bracing system according to claim 1, wherein: the limiting structure comprises a limiter; the limiting stopper is arranged on the outer sides of the side walls on the two sides of the sliding groove, and a mounting hole penetrating through the side wall of the sliding groove is formed in the mounting position of the limiting stopper, so that a limiting rod on the limiting stopper can penetrate through the mounting hole and extend into the groove I; the lateral edges of the convex block I or the convex block II are both in a sawtooth shape, so that the limiting rod can be clamped into the sawtooth shape to prevent the convex block I or the convex block II from moving.
3. The deep foundation pit bracing system according to claim 1, wherein: the supporting piece is made of I-shaped steel, the length of the supporting piece is larger than the width of the single-face sliding block, and the supporting piece is installed on the end face of the single-face sliding block in a cantilever mode.
4. The deep foundation pit bracing system according to claim 1, wherein: the cushion block is cylindrical, the diameter of the cushion block is equivalent to the end face of the steel support, and the length of the cushion block is equivalent to the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037384.3A CN110714467B (en) | 2019-10-29 | 2019-10-29 | Deep foundation pit supporting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037384.3A CN110714467B (en) | 2019-10-29 | 2019-10-29 | Deep foundation pit supporting system |
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| CN110714467A true CN110714467A (en) | 2020-01-21 |
| CN110714467B CN110714467B (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235618A (en) * | 2021-06-01 | 2021-08-10 | 中国建筑第八工程局有限公司 | Support system in slip type foundation pit and construction method thereof |
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| JPH0841876A (en) * | 1994-07-29 | 1996-02-13 | Showa Alum Corp | Timbering frame for landslide protection wall |
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| CN103500587A (en) * | 2013-09-22 | 2014-01-08 | 吴江市博众精工科技有限公司 | Bidirectional moving mechanism |
| CN104060812A (en) * | 2014-07-03 | 2014-09-24 | 武汉天蝎建筑装备有限公司 | Conveyance type automatically climbing material platform |
| CN107313431A (en) * | 2017-08-02 | 2017-11-03 | 中铁隧道集团二处有限公司 | Close on not contour foundation ditch method for synchronously constructing |
| CN109183807A (en) * | 2018-09-17 | 2019-01-11 | 江苏东合南岩土科技股份有限公司 | Removable bracing members and its construction method |
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2019
- 2019-10-29 CN CN201911037384.3A patent/CN110714467B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0841876A (en) * | 1994-07-29 | 1996-02-13 | Showa Alum Corp | Timbering frame for landslide protection wall |
| KR200443476Y1 (en) * | 2008-08-05 | 2009-02-17 | 가원이엔씨 주식회사 | Structure for supporting wall |
| CN103500587A (en) * | 2013-09-22 | 2014-01-08 | 吴江市博众精工科技有限公司 | Bidirectional moving mechanism |
| CN104060812A (en) * | 2014-07-03 | 2014-09-24 | 武汉天蝎建筑装备有限公司 | Conveyance type automatically climbing material platform |
| CN107313431A (en) * | 2017-08-02 | 2017-11-03 | 中铁隧道集团二处有限公司 | Close on not contour foundation ditch method for synchronously constructing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113235618A (en) * | 2021-06-01 | 2021-08-10 | 中国建筑第八工程局有限公司 | Support system in slip type foundation pit and construction method thereof |
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