CN116220060B - Non-rectangular foundation pit steel support system steel bracket connecting device and mounting method thereof - Google Patents
Non-rectangular foundation pit steel support system steel bracket connecting device and mounting method thereof Download PDFInfo
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- CN116220060B CN116220060B CN202310511066.6A CN202310511066A CN116220060B CN 116220060 B CN116220060 B CN 116220060B CN 202310511066 A CN202310511066 A CN 202310511066A CN 116220060 B CN116220060 B CN 116220060B
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- steel
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- foundation pit
- steel support
- support system
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a non-rectangular foundation pit steel support system steel bracket connecting device and an installation method thereof. The steel bracket connecting device of the non-rectangular foundation pit steel support system comprises a back plate, a baffle plate and a bottom plate, wherein a plurality of triangular support plates are arranged on one side of the back plate in parallel, an adjusting plate is fixed on each triangular support plate, and the angle adjusted by each triangular support plate is not higher than 18 degrees. The steel bracket connecting device of the non-rectangular foundation pit steel support system can be used for non-rectangular foundation pits such as right-angle trapezoids and isosceles trapezoids. The steel bracket connecting device of the non-rectangular foundation pit steel support system is a connecting device for preventing the steel support from falling and adjusting the angle between the steel support and the steel enclosing purlin, and the prestress applied on the steel support can be stably transferred into the steel enclosing purlin and the enclosing structure through the device.
Description
Technical Field
The invention relates to the technical field of building envelope supporting systems, in particular to a steel bracket connecting device.
Background
The foundation pit support structure in the city adopts a support system of a guard pile or a continuous wall and an inner support, namely a foundation pit with a side wall structure, the plane structure is usually rectangular, steel supports are usually selected as the preference in the foundation pit support system, most of the steel supports in the pit are vertical to the side wall structure (inclined supports with an angle of 45 degrees only exist at the position of an internal corner), and due to the fact that the steel supports are mutually vertical, when the steel supports apply prestress, only a common device which is convenient for the steel supports to install quickly is needed to install.
Along with the diversification of building construction engineering, the non-rectangular foundation pit can appear in partial foundation pit plane structure, namely the plane arrangement of right trapezoid or isosceles trapezoid appears.
In the installation process of the supporting system in the foundation pit of a non-rectangle (right trapezoid or isosceles trapezoid) as shown in fig. 1, as the enclosure structures on two sides of the foundation pit are not two horizontal lines, a certain angle exists between the steel support and the side wall (diagonal bracing at the internal corner position is not included in the enclosure structures), so that the stability of the pre-axial force cannot be effectively guaranteed to be implemented on the steel support, and when the axial force fails, the steel support is easy to fall, so that the quality of the pre-axial force and the safety of the foundation pit cannot be ensured.
Disclosure of Invention
The invention aims to solve the problem of unstable relative positions of a steel support and a steel enclosing purlin in a non-rectangular foundation pit, and provides a steel bracket connecting device of a non-rectangular foundation pit steel support system, which improves the working efficiency.
The invention adopts the technical proposal for solving the problems that:
the steel bracket connecting device of the non-rectangular foundation pit steel support system comprises a back plate 1, a baffle plate 2 and a bottom plate 3, wherein the bottom of the baffle plate 2 is fixed on two sides of the bottom plate 3, the baffle plate 2 is fixedly connected with the edge of the back plate 1, and preferably, a plurality of triangular support plates 5 are arranged on one side of the back plate 1 in parallel; the triangular support plate 5 is fixedly provided with an adjusting plate 4, and the angle adjusted by the triangular support plate 5 is not higher than 18 degrees; the top edge of the backboard 1 is also fixed with a lifting ring 7.
Preferably, the lifting ring 7 is square and concave.
Preferably, the dimensions of the back plate 1 are 1000mm by 800mm, the dimensions of the baffle plate 2 are 320mm by 400mm, and the dimensions of the bottom plate 3 are 1000mm by 320mm.
Preferably, two L-shaped hooks 6 are welded on the back plate 1, and the hooks 6 can be made of 12mm thick steel plates.
Preferably, the height of the adjusting plate 4 is 600mm, and the bottom edge of the gusset plate 5 is 600mm.
Preferably, the number of the triangular support plates 5 is 7, and the interval between the triangular support plates 5 arranged in parallel is 100mm.
Preferably, the adjusting plate 4 and the triangular supporting plate 5 are made of steel plates with the thickness of 20mm. The adjustable contact surface is formed by the two components and is tightly connected with the end part of the steel support to transfer the prestress applied by the steel support subsequently, so that a stable prestress transfer system is formed under the condition that the adjustment angle is smaller than 18 degrees.
The invention also discloses a method for installing the non-rectangular foundation pit steel support system steel bracket connecting device, which comprises the following steps:
s1, installing a steel bracket and a steel support; firstly, hanging brackets of a steel bracket connecting device of a non-rectangular foundation pit steel support system are conveyed to two ends of a steel support mounting position, the steel bracket connecting device of the non-rectangular foundation pit steel support system is attached to the front face of a steel purlin, then the steel support is lifted to the mounting position, and a fixed end and a movable end of the steel support are placed on the steel bracket connecting device of the non-rectangular foundation pit steel support system;
s2, applying prestress on the movable end of the steel support; and after the steel support is placed in place, applying prestress step by step, and fixing the movable end of the steel support.
Preferably, in step S2, after the steel support is placed in place, it is checked whether the angle formed by the triangular support plate and the adjusting plate meets the requirement of tight connection with the end of the steel support, and the gap between the movable end of the steel support and the adjusting plate can be filled with sheet steel plates.
In step S2, when the deviation between the steel support end and the adjusting plate is large, the angle of the triangular support plate is redesigned, the steel bracket connecting device is replaced, and when the angle is proper and the end faces are tightly attached, the subsequent pressing and fixing measures can be performed.
The beneficial effects of the invention are as follows: according to the invention, the connecting device of the adjusting plate and the triangular support plate is added to the steel bracket connecting device and the mounting method thereof, so that the problems of steel support mounting and pre-loading axial force application caused by a non-rectangular foundation pit can be well solved, the adjusting angle can reach 18 degrees, the foundation pit structure with a plane arranged in a right trapezoid or isosceles trapezoid is more convenient to implement steel support mounting and pre-stress pressing work, the pre-loading axial force of the inner support system can be effectively transmitted outwards (the steel support, the steel purlin and the retaining wall structure are sequentially transmitted to an outside soil body), the safety of the whole support system and the foundation pit structure is ensured, the problems of massive welding and cutting performed by the traditional bracket during use are reduced, the installation and the disassembly of site steel materials are facilitated, and the steel support pre-stress application process in the non-rectangular foundation pit is simplified.
The steel bracket connecting device is convenient to install, safe and reliable, and can adjust the relative angle between the steel support and the steel purlin and prevent the steel support of the non-rectangular foundation pit from falling; the installation method is efficient in construction, improves economic benefit and work efficiency, and has wide popularization and application prospects.
Drawings
FIG. 1 is a schematic diagram of a non-rectangular foundation pit steel support architecture.
Fig. 2 is a three-dimensional view of a non-rectangular foundation pit steel support system steel bracket connection device.
FIG. 3 is a schematic view of the mounting nodes of the steel bracket attachment device of the non-rectangular foundation pit steel support system of the present invention.
Reference numerals: 1-backboard, 2-baffle, 3-baseboard, 4-adjusting board, 5-triangle support board, 6-pothook, 7-lifting ring, 8-guard pile, 9-steel purlin, 10-non-rectangular foundation pit steel support system steel bracket connecting device, 11-steel support, 12-steel purlin lower triangle bracket and 13-invention device mounting position.
Detailed Description
The invention is further described below with reference to examples and figures.
Example 1
The installation position of the steel bracket connecting device for the non-rectangular foundation pit steel support system in the non-rectangular foundation pit is shown in fig. 1, the right trapezoid plane arranged foundation pit section installed on the left side of fig. 1 in the embodiment is provided, and the conventional steel support pair support used in the prior art is generally applied to the pit angle of the foundation pit area with rectangular plane arrangement on the right side of fig. 1. The non-rectangular foundation pit steel support system steel bracket connecting device disclosed by the embodiment comprises: the device comprises a back plate 1, a baffle plate 2, a bottom plate 3, an adjusting plate 4, a triangular support plate 5, a hook 6 and a lifting ring 7.
As shown in fig. 2, the back plate 1 is rectangular (one block), the length x width x thickness is 1000mm x 800mm x 12mm, the baffle plate 2 is right triangle (two blocks), the base width x height x thickness is 320mm x 400mm x 12mm, the bottom plate 3 is rectangular (one block), the length x width x thickness is 1000mm x 320mm x 12mm, the adjusting plate 4 is rectangular (one block), the length x width x thickness is 631mm (calculated by an angle of 18 °) x 620mm x 20mm, the triangular support plate 5 is triangle (seven blocks, the interval is 100 mm), the adjusting angle is 18 °, the base width x height x thickness is 600mm x 195mm x 20mm, the hook 6 is L-shaped (two blocks), and the hanging ring 7 is square concave (one block).
The bottom plate 3 is welded with the bottom of the back plate 1, the baffle 2 is welded with the back plate 1 and the bottom plate 3, the triangular support plates 5 are welded with the central area of the back plate 1, seven triangular support plates 5 are arranged in parallel, the distance between the two triangular support plates is 100mm, the adjusting plates 4 are welded with the inclined edges of the triangular support plates 5, the lifting rings 7 are welded with the top of the back plate 1, and the lifting hooks 6 are welded on the back of the back plate 1.
Example 2
This embodiment discloses a method for installing a non-rectangular foundation pit steel support system steel bracket connection device using the steel bracket connection device disclosed in embodiment 1.
Referring to fig. 3, a steel enclosing purlin 9 is erected on an enclosing pile 8, a back plate 1 in a non-rectangular foundation pit steel support system steel bracket connecting device 10 in embodiment 1 is clung to the outer vertical surface of the steel enclosing purlin 9, lifting is carried out by using a lifting ring 7, the non-rectangular foundation pit steel support system steel bracket connecting device 10 is hung on the front surface of the steel enclosing purlin 9 by using a hanging hook 6, an assembled steel support 11 is lifted to an installation position by using a lifting device, and a steel support fixed end and a steel support movable end (loose head) are placed on the non-rectangular foundation pit steel support system steel bracket connecting device 10; the steel support movable end is propped against the adjusting plate 4, after the steel support 11 is placed in place, the hydraulic jack is placed in the jacking position of the steel support movable end, the pump is started after the oil pipe is connected, the prestress is applied step by step, and after the prestress is applied in place, the steel support movable end is fixed and welded firmly. The adjusting plate, the triangular supporting plate and the back plate of the device are utilized to transmit the pre-axial force to the steel enclosing purlin and the enclosing structure (enclosing piles or walls) step by step, so that the steel enclosing purlin and the enclosing structure form an integral supporting system.
According to the non-rectangular foundation pit steel support system steel bracket connecting device and the construction method, provided by the invention, on the premise of meeting construction requirements and precision, the simplicity in operation and low cost are realized, complicated field high-altitude welding operation is avoided, and the original fixing procedure is simplified, so that the installation progress of the support system in the foundation pit is greatly improved.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art, within the scope of the present disclosure, may apply to the present invention, and equivalents and modifications may be substituted or altered by elements thereof.
Claims (6)
1. The steel bracket connecting device of the non-rectangular foundation pit steel support system comprises a back plate (1), a baffle plate (2) and a bottom plate (3), wherein the bottoms of the baffle plate (2) are fixed on two sides of the bottom plate (3), and the baffle plate (2) is fixedly connected with the edge of the back plate (1), and is characterized in that a plurality of triangular support plates (5) are arranged on one side of the back plate (1) in parallel; an adjusting plate (4) is fixed on the triangular support plate (5), and the angle of adjustment of the triangular support plate (5) is not higher than 18 degrees; a hoisting ring (7) is also fixed at the top edge of the backboard (1);
two L-shaped hooks (6) are welded on the backboard (1), and the hooks (6) can be made of a 12mm thick steel plate;
the installation method of the non-rectangular foundation pit steel support system steel bracket connecting device comprises the following steps:
s1, installing a steel bracket and a steel support; firstly, hanging brackets of the non-rectangular foundation pit steel support system steel bracket connecting devices are conveyed to two ends of a steel support installing position, the non-rectangular foundation pit steel support system steel bracket connecting devices are attached to the front face of a steel enclosing purlin, then, the steel support is lifted to the installing position, and fixed ends and movable ends of the steel support are placed on the non-rectangular foundation pit steel support system steel bracket connecting devices;
s2, filling a gap between the movable end of the steel support and the adjusting plate into a thin sheet steel plate; applying a pre-stress on the movable end of the steel support; and after the steel support is placed in place, applying prestress step by step, and fixing the movable end of the steel support.
2. The non-rectangular foundation pit steel support system steel bracket connection device according to claim 1, characterized in that the lifting ring (7) is square concave.
3. A non-rectangular foundation pit steel support system steel bracket connection according to claim 1, characterized in that the back plate (1) has dimensions of 1000mm x 800mm, the baffle plate (2) has dimensions of 320mm x 400mm, and the bottom plate (3) has dimensions of 1000mm x 320mm.
4. A non-rectangular foundation pit steel support system steel bracket connection according to claim 1, characterized in that the height of the adjusting plate (4) is 600mm and the bottom edge of the gusset plate (5) is 600mm.
5. The non-rectangular foundation pit steel support system steel bracket connecting device according to claim 1, wherein the number of the triangular support plates (5) is 7, and the interval between the triangular support plates (5) arranged in parallel is 100mm.
6. The steel bracket connecting device of the non-rectangular foundation pit steel support system according to claim 5, wherein the adjusting plate (4) and the triangular support plate (5) are made of 20mm thick steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310511066.6A CN116220060B (en) | 2023-05-09 | 2023-05-09 | Non-rectangular foundation pit steel support system steel bracket connecting device and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310511066.6A CN116220060B (en) | 2023-05-09 | 2023-05-09 | Non-rectangular foundation pit steel support system steel bracket connecting device and mounting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116220060A CN116220060A (en) | 2023-06-06 |
| CN116220060B true CN116220060B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310511066.6A Active CN116220060B (en) | 2023-05-09 | 2023-05-09 | Non-rectangular foundation pit steel support system steel bracket connecting device and mounting method thereof |
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| Country | Link |
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| CN (1) | CN116220060B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201908309U (en) * | 2010-12-28 | 2011-07-27 | 北京城乡一建设工程有限责任公司 | Falling-preventing device for steel bracing strut |
| DE102016010145A1 (en) * | 2015-08-25 | 2017-05-24 | Sps Schutzplanken Gmbh | Anchoring for a foundation |
| CN208430517U (en) * | 2018-04-09 | 2019-01-25 | 吴祖伟 | Bracing members hanging plate for subway foundation pit construction |
| CN113585279A (en) * | 2021-07-15 | 2021-11-02 | 江苏华东地质建设集团有限公司 | Special-shaped flange and foundation pit steel supporting structure using same |
| CN114775622A (en) * | 2022-05-18 | 2022-07-22 | 中铁二十二局集团有限公司 | Construction method of special-shaped deep foundation pit with construction space limitation of adjacent building structure |
| CN217027123U (en) * | 2022-01-27 | 2022-07-22 | 厦门安捷建筑工程有限公司 | Special-shaped deep and large foundation pit supporting structure |
| CN217629979U (en) * | 2022-08-02 | 2022-10-21 | 中铁隆工程集团有限公司 | Hanging plate convenient to mount and dismount |
| CN217811068U (en) * | 2022-05-19 | 2022-11-15 | 中建三局集团华南有限公司 | Throw and prop angle connecting piece |
-
2023
- 2023-05-09 CN CN202310511066.6A patent/CN116220060B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201908309U (en) * | 2010-12-28 | 2011-07-27 | 北京城乡一建设工程有限责任公司 | Falling-preventing device for steel bracing strut |
| DE102016010145A1 (en) * | 2015-08-25 | 2017-05-24 | Sps Schutzplanken Gmbh | Anchoring for a foundation |
| CN208430517U (en) * | 2018-04-09 | 2019-01-25 | 吴祖伟 | Bracing members hanging plate for subway foundation pit construction |
| CN113585279A (en) * | 2021-07-15 | 2021-11-02 | 江苏华东地质建设集团有限公司 | Special-shaped flange and foundation pit steel supporting structure using same |
| CN217027123U (en) * | 2022-01-27 | 2022-07-22 | 厦门安捷建筑工程有限公司 | Special-shaped deep and large foundation pit supporting structure |
| CN114775622A (en) * | 2022-05-18 | 2022-07-22 | 中铁二十二局集团有限公司 | Construction method of special-shaped deep foundation pit with construction space limitation of adjacent building structure |
| CN217811068U (en) * | 2022-05-19 | 2022-11-15 | 中建三局集团华南有限公司 | Throw and prop angle connecting piece |
| CN217629979U (en) * | 2022-08-02 | 2022-10-21 | 中铁隆工程集团有限公司 | Hanging plate convenient to mount and dismount |
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| Publication number | Publication date |
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| CN116220060A (en) | 2023-06-06 |
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