CN108894234B - Polygonal foundation pit supporting structure and construction method - Google Patents
Polygonal foundation pit supporting structure and construction method Download PDFInfo
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- CN108894234B CN108894234B CN201811069915.2A CN201811069915A CN108894234B CN 108894234 B CN108894234 B CN 108894234B CN 201811069915 A CN201811069915 A CN 201811069915A CN 108894234 B CN108894234 B CN 108894234B
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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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Abstract
The invention belongs to the technical field of foundation pit supporting, and particularly relates to a polygonal foundation pit supporting structure and a construction method, which comprise a supporting and protecting plate, wherein two first limiting blocks are vertically and symmetrically arranged on one side of the supporting and protecting plate, the two first limiting blocks are fixedly connected with a supporting plate, a limiting mechanism for limiting the two first limiting blocks is arranged on one side of the supporting and protecting plate, which is far away from the first limiting blocks, a bottom plate is horizontally arranged on the lower side of the supporting plate, one end of the bottom plate is fixedly connected with the lower end of the supporting and protecting plate, a reinforcing mechanism for reinforcing the supporting and protecting plate is arranged on the bottom plate, a plurality of fixing blocks are vertically arranged on one side of the supporting and protecting plate, the fixing blocks are fixedly connected with the supporting and protecting plate, openings. Has the advantages that: the supporting and protecting plate is reasonable in structure, plays a role in stabilizing through a plurality of structures, and simultaneously ensures that the whole supporting and protecting plate is more stable through the interaction principle of force, and the structure of the supporting and protecting plate bears larger pressure and larger impact force range.
Description
Technical Field
The invention belongs to the technical field of foundation pit supporting, and particularly relates to a polygonal foundation pit supporting structure and a construction method.
Background
The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. The foundation pit inevitably causes deformation of surrounding soil bodies in the excavation process, influences underground pipelines of surrounding buildings, and seriously endangers the normal use and safety of the underground pipelines. In order to avoid this, a foundation pit supporting structure is provided in the design of the foundation pit and the excavation construction for stabilizing the safety of the foundation pit.
The existing foundation pit supporting structure is simple, generally has only one supporting structure, and a supporting plate serving as a supporting main body is easy to break.
Therefore, a polygonal foundation pit supporting structure and a construction method are provided to solve the problems.
Disclosure of Invention
The invention aims to solve the problems and provides a polygonal foundation pit supporting structure which is stable in structure and large in stress range.
In order to achieve the purpose, the invention adopts the following technical scheme: the polygonal foundation pit supporting structure comprises a supporting plate, wherein two first limit blocks are vertically and symmetrically arranged on one side of the supporting plate and are fixedly connected with a supporting plate, a limit mechanism for limiting the two first limit blocks is arranged on one side, away from the first limit blocks, of the supporting plate, a bottom plate is horizontally arranged on the lower side of the supporting plate, one end of the bottom plate is fixedly connected with the lower end of the supporting plate, a reinforcing mechanism for reinforcing the supporting plate is arranged on the bottom plate, a plurality of fixed blocks are vertically arranged on one side, away from the bottom plate, of the supporting plate, the fixed blocks are fixedly connected with the supporting plate, openings are vertically formed in the fixed blocks, and matched limit columns are arranged in the openings.
In the polygonal foundation pit supporting structure, the supporting plate comprises two arc plates which correspond to each other, the two arc plates are fixedly connected with each other, and foam materials are filled between the two arc plates.
In foretell polygon foundation ditch supporting construction, stop gear includes two second stoppers with supporting plate fixed connection, two the second stopper corresponds respectively with two first stoppers, the one end that the backplate was kept away from to the second stopper is equipped with the fluting that corresponds with first stopper, second stopper upper end is equipped with the first through-hole with the fluting intercommunication, be equipped with the bolt in the first through-hole, bolt lower extreme and second stopper threaded connection, be equipped with the second through-hole that corresponds with the bolt position on the first stopper.
In foretell polygon foundation ditch supporting construction, the strengthening mechanism is including setting up the inclined hole on the supporting plate, the slope is equipped with the cylinder piece that matches in the inclined hole, be equipped with first oblique screw hole on the cylinder piece, threaded rod in the first oblique screw hole, the threaded rod upper end extends to outside the first oblique screw hole and coaxial fixedly connected with commentaries on classics piece, and the coaxial fixedly connected with pointed cone of threaded rod lower extreme, be equipped with the oblique screw hole of second that matches with the threaded rod on the bottom plate.
In the polygonal foundation pit supporting structure, one end of the bottom plate, which is far away from the supporting plate, is in a conical shape.
In the polygonal foundation pit supporting structure, the lower end of the limiting column is in a taper shape, and the upper end of the limiting column is in an arc shape.
In the polygonal foundation pit supporting structure, the contact surface of the bolt and the first limiting block is not provided with threads.
The invention also discloses a polygonal foundation pit supporting construction method, which comprises the following steps:
s1, placing the supporting plate with the bottom plate at a mounting point calculated in advance, enabling one conical end of the bottom plate to face the foundation pit, and hammering the supporting plate into the side wall of the foundation pit by using a tool to hammer the supporting plate;
s2, the protection plate is hammered through the tool to change a slight angle, so that the first limiting block and the second limiting block of the adjacent protection plate correspond in position, the first limiting block is arranged in the groove in the second limiting block, the bolt is screwed in through the threaded hole, the bolt is in threaded connection with the second limiting block, and the first limiting block is limited.
And S3, screwing the threaded rod into the first inclined threaded hole in the cylindrical block, and rotating the threaded rod through the rotating block when the pointed cone at the lower end of the threaded rod contacts the foundation pit wall, so that the threaded rod is conveniently screwed into the foundation pit wall until the threaded rod is screwed into the second inclined threaded hole on the bottom plate.
And S4, placing the limiting column in the opening on the fixing block, hammering the limiting column by a tool, hammering one third of the limiting column into the ground, and completing the fixing.
Compared with the prior art, the polygonal foundation pit supporting structure and the construction method have the advantages that:
1. the base plate is arranged and hammered into the wall of the foundation pit, the base plate is fixedly connected with the supporting plate, so that the supporting plate can be supported, meanwhile, the supporting plate and the base plate are reinforced by arranging the threaded rod which is obliquely arranged, the wall of the foundation pit has the gravity effect on the base plate, the gravity effect also plays a role in the supporting plate, the supporting plate plays a supporting role in the wall of the foundation pit, and the firm support is realized through the reaction of the force.
2. According to the invention, the limiting columns are arranged, so that the limiting effect is achieved on the supporting plate, the position of the supporting and protecting plate is limited, the supporting and protecting plate is supported, the supporting and protecting plate supports the foundation pit wall, the supporting and protecting plate cannot move, the foundation pit wall cannot slide, the effect of the gravity of the foundation pit wall on the bottom plate is maintained, and the stability of the whole supporting is improved.
3. The supporting and protecting plate is formed by fixedly connecting the two arc-shaped plates, and the foam material is filled in the supporting and protecting plate, so that the stress is large in range, the plate cracking condition can not occur, and meanwhile, the foam material can absorb the impact force and play a role in reinforcement and protection.
Drawings
FIG. 1 is a schematic structural diagram of a polygonal foundation pit supporting structure and a construction method according to the present invention in a front view;
FIG. 2 is a schematic side view of a polygonal supporting structure for a foundation pit and a construction method according to the present invention;
FIG. 3 is a schematic top view of a polygonal supporting structure for a foundation pit and a supporting plate in the construction method according to the present invention;
fig. 4 is a schematic structural diagram of a base plate in the polygonal foundation pit supporting structure and the construction method provided by the invention.
In the figure, 1 protective plate, 2 first limiting blocks, 3 limiting mechanisms, 4 bottom plates, 5 reinforcing mechanisms, 6 fixing blocks, 7 limiting columns, 8 arc-shaped plates, 9 foam materials, 10 second limiting blocks, 11 bolts, 12 cylindrical blocks, 13 threaded rods, 14 rotating blocks and 15 pointed cones.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
As shown in fig. 1-4, a polygon foundation pit supporting structure, including a backplate 1, backplate 1 includes two arcs 8 that correspond each other, two mutual fixed connection of arcs 8, the arc can disperse the atress, thereby the atress scope is great, it has foam 9 to fill between two arcs 8, foam 9 can absorb the impact force, the vertical symmetry in 1 one side of backplate is equipped with two first stoppers 2, two first stoppers 2 all with 1 fixed connection of backplate, one side that backplate 1 kept away from first stopper 2 is equipped with the stop gear 3 of two first stoppers 2 of restriction.
The limiting mechanism 3 comprises two second limiting blocks 10 fixedly connected with the supporting plate 1, the two second limiting blocks 10 correspond to the two first limiting blocks 2 respectively, one end of the second limiting block 10 far away from the supporting plate 1 is provided with a groove corresponding to the first limiting block 2, the upper end of the second limiting block 10 is provided with a first through hole communicated with the groove, a bolt 11 is arranged in the first through hole, the lower end of the bolt 11 is in threaded connection with the second limiting block 10, the first limiting block 2 is provided with a second through hole corresponding to the bolt 11, the first limiting block 2 can be limited through the bolt 11, the contact surface of the bolt 11 and the first limiting block 2 is not provided with threads, when the bolt is stressed, the first limiting block 2 and the bolt 11 rotate relatively, the threads are not arranged, the damage is reduced, the bottom plate 4 is horizontally arranged on the lower side of the supporting plate 1, one end of the bottom plate 4 is fixedly connected with the lower end of the supporting plate 1, one end, the bottom plate 4 is convenient to hammer into the foundation pit wall, and the reinforcing mechanism 5 for reinforcing the supporting and protecting plate 1 is arranged on the bottom plate 4.
The reinforcing mechanism 5 comprises an inclined hole arranged on the supporting and protecting plate 1, a matched cylindrical block 12 is obliquely arranged in the inclined hole, a first inclined threaded hole is arranged on the cylindrical block 12, a threaded rod 13 is arranged in the first inclined threaded hole, the upper end of the threaded rod 13 extends out of the first inclined threaded hole and is coaxially and fixedly connected with a rotating block 14, the lower end of the threaded rod 13 is coaxially and fixedly connected with a pointed cone 15, the pointed cone 15 is conveniently screwed into the pit wall, a second inclined threaded hole matched with the threaded rod 13 is arranged on the bottom plate 4, the threaded rod 13 is screwed into the second inclined threaded hole to play a reinforcing role in the supporting and protecting plate 1, a plurality of fixing blocks 6 are vertically arranged on one side of the supporting and protecting plate 1 away from the bottom plate 4, the fixing blocks 6 are fixedly connected with the supporting and protecting plate 1, an opening is vertically arranged on each fixing block 6, a matched limiting column 7 is arranged in the opening, and the upper end of the limiting column 7 is arc-shaped, so that the limiting column can be conveniently hammered and nailed into the ground.
The invention also discloses a polygonal foundation pit supporting construction method, which comprises the following steps:
s1, placing the supporting plate with the bottom plate at a mounting point calculated in advance, enabling one conical end of the bottom plate to face the foundation pit, and hammering the supporting plate into the side wall of the foundation pit by using a tool to hammer the supporting plate;
s2, the protection plate is hammered through the tool to change a slight angle, so that the first limiting block and the second limiting block of the adjacent protection plate correspond in position, the first limiting block is arranged in the groove in the second limiting block, the bolt is screwed in through the threaded hole, the bolt is in threaded connection with the second limiting block, and the first limiting block is limited.
And S3, screwing the threaded rod into the first inclined threaded hole in the cylindrical block, and rotating the threaded rod through the rotating block when the pointed cone at the lower end of the threaded rod contacts the foundation pit wall, so that the threaded rod is conveniently screwed into the foundation pit wall until the threaded rod is screwed into the second inclined threaded hole on the bottom plate.
And S4, placing the limiting column in the opening on the fixing block, hammering the limiting column by a tool, hammering one third of the limiting column into the ground, and completing the fixing.
When the invention is used, the shape and the length of a polygonal foundation pit are measured, the supporting plate 1 with the bottom plate 4 is placed at a position for realizing the measurement, one end of the bottom plate 4, which is far away from the supporting plate 1, is tapered, the supporting plate 1 is hammered by a tool so as to hammer the bottom plate 4 into a foundation pit wall, then the supporting plate 1 is finely adjusted by hammering, a first limiting block 2 and a second limiting block 10 on the adjacent supporting plate 1 are correspondingly positioned, the first limiting block 2 is arranged in a groove on the second limiting block 10, then the position of the first limiting block 2 is fixed by a bolt 11, meanwhile, the contact surface of the bolt 11 and the first limiting block 2 is not provided with threads, so that the first limiting block 2 can conveniently rotate on the bolt 11 and can not be damaged when stressed, then a threaded rod 13 is screwed into a first inclined threaded hole on a cylindrical block 12, and then a rotating block 14 is rotated to conveniently rotate the threaded rod 13, until screwing threaded rod 13 into the oblique screw hole of second on bottom plate 4, the coaxial fixedly connected with pointed cone 15 of threaded rod 13 lower extreme makes things convenient for the screw in soil in, arrange fixed block 6 in with spacing post 7 again, nail into ground 7 third of spacing post through the hammering to carry on spacingly to a backplate 1, prop backplate 1 and include two arcs 8 that correspond each other, 8 mutual fixed connection of arcs to can bear great power, it has foam material 9 to fill between two arcs 8, can absorb the impact force.
Although the terms of the support plate 1, the first stopper 2, the stopper mechanism 3, the bottom plate 4, the reinforcing mechanism 5, the fixing block 6, the stopper post 7, the arc-shaped plate 8, the foam material 9, the second stopper 10, the bolt 11, the cylindrical block 12, the threaded rod 13, the rotating block 14, and the pointed cone 15 are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (7)
1. A polygonal foundation pit supporting construction method comprises a supporting and protecting plate (1), and is characterized in that two first limiting blocks (2) are vertically and symmetrically arranged on one side of the supporting and protecting plate (1), the two first limiting blocks (2) are fixedly connected with the supporting and protecting plate (1), a limiting mechanism (3) for limiting the two first limiting blocks (2) is arranged on one side, away from the first limiting blocks (2), of the supporting and protecting plate (1), a bottom plate (4) is horizontally arranged on the lower side of the supporting and protecting plate (1), one end of the bottom plate (4) is fixedly connected with the lower end of the supporting and protecting plate (1), a reinforcing mechanism (5) for reinforcing the supporting and protecting plate (1) is arranged on the bottom plate (4), a plurality of fixing blocks (6) are vertically arranged on one side, away from the bottom plate (4), of the supporting and protecting plate (1), the fixing blocks (6) are fixedly connected with the supporting and protecting plate (1), a matched limit column (7) is arranged in the opening;
the polygonal foundation pit supporting construction method comprises the following steps:
s1, placing the supporting plate with the bottom plate at a mounting point calculated in advance, enabling one conical end of the bottom plate to face the foundation pit, and hammering the supporting plate into the side wall of the foundation pit by using a tool to hammer the supporting plate;
s2, hammering the supporting and protecting plates by a tool to change a slight angle, so that the first limiting block and the second limiting block of the adjacent supporting and protecting plates correspond to each other in position, the first limiting block is arranged in the groove on the second limiting block, a bolt is screwed in through the threaded hole, the bolt is in threaded connection with the second limiting block, and the first limiting block is limited;
s3, screwing the threaded rod into the first inclined threaded hole in the cylindrical block, and rotating the threaded rod through the rotating block when the pointed cone at the lower end of the threaded rod contacts the foundation pit wall, so that the threaded rod is conveniently screwed into the foundation pit wall until the threaded rod is screwed into the second inclined threaded hole in the bottom plate;
and S4, placing the limiting column in the opening on the fixing block, hammering the limiting column by a tool, hammering one third of the limiting column into the ground, and completing the fixing.
2. The polygonal foundation pit supporting construction method according to claim 1, wherein the supporting and protecting plate (1) comprises two arc-shaped plates (8) which correspond to each other, the two arc-shaped plates (8) are fixedly connected with each other, and a foam material (9) is filled between the two arc-shaped plates (8).
3. The polygonal foundation pit supporting construction method according to claim 1, wherein the limiting mechanism (3) comprises two second limiting blocks (10) fixedly connected with the supporting plate (1), the two second limiting blocks (10) correspond to the two first limiting blocks (2) respectively, one end, away from the supporting plate (1), of each second limiting block (10) is provided with a notch corresponding to the first limiting block (2), the upper end of each second limiting block (10) is provided with a first through hole communicated with the notch, a bolt (11) is arranged in each first through hole, the lower end of each bolt (11) is in threaded connection with the corresponding second limiting block (10), and each first limiting block (2) is provided with a second through hole corresponding to the position of the bolt (11).
4. The polygonal foundation pit supporting construction method according to claim 1, wherein the reinforcing mechanism (5) comprises an inclined hole formed in the supporting plate (1), a matched cylindrical block (12) is obliquely arranged in the inclined hole, a first inclined threaded hole is formed in the cylindrical block (12), a threaded rod (13) is arranged in the first inclined threaded hole, the upper end of the threaded rod (13) extends out of the first inclined threaded hole and is coaxially and fixedly connected with a rotating block (14), a pointed cone (15) is coaxially and fixedly connected to the lower end of the threaded rod (13), and a second inclined threaded hole matched with the threaded rod (13) is formed in the bottom plate (4).
5. A polygonal foundation pit supporting construction method according to claim 1, characterized in that the end of the bottom plate (4) far from the supporting plate (1) is tapered.
6. The polygonal foundation pit support construction method according to claim 1, wherein the lower end of the limiting column (7) is in a taper shape, and the upper end of the limiting column (7) is in an arc shape.
7. The polygonal foundation pit support construction method according to claim 3, wherein the contact surface of the bolt (11) and the first limiting block (2) is not provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069915.2A CN108894234B (en) | 2018-09-13 | 2018-09-13 | Polygonal foundation pit supporting structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069915.2A CN108894234B (en) | 2018-09-13 | 2018-09-13 | Polygonal foundation pit supporting structure and construction method |
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| Publication Number | Publication Date |
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| CN108894234A CN108894234A (en) | 2018-11-27 |
| CN108894234B true CN108894234B (en) | 2020-03-24 |
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| CN110984168B (en) * | 2019-11-04 | 2022-03-22 | 中国一冶集团有限公司 | Combined foundation pit supporting pile structure |
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| KR101888737B1 (en) * | 2016-03-15 | 2018-08-14 | 박광호 | Prefabricated shoring structure |
| CN206267159U (en) * | 2016-12-23 | 2017-06-20 | 北京航勘建设有限公司 | A kind of upper pipe working well foundation pit supporting construction |
| CN207032219U (en) * | 2017-08-09 | 2018-02-23 | 江苏华都建设有限公司 | Backstop integrated combination supporting construction |
| CN108166506B (en) * | 2018-01-24 | 2020-07-07 | 浙江立鹏建设有限公司 | Foundation pit supporting structure |
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Effective date of registration: 20200227 Address after: No. 80, Lianxie Road, Bayi Township, Nanchang County, Nanchang City, Jiangxi Province Applicant after: Guohai Construction Co., Ltd Address before: 310058 Zhejiang University, 388 Yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province Applicant before: Wang Shuzhen |
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