CN110904976B - Foundation pit support plate structure - Google Patents
Foundation pit support plate structure Download PDFInfo
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- CN110904976B CN110904976B CN201911160629.1A CN201911160629A CN110904976B CN 110904976 B CN110904976 B CN 110904976B CN 201911160629 A CN201911160629 A CN 201911160629A CN 110904976 B CN110904976 B CN 110904976B
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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
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention discloses a foundation pit support plate structure, which is applied to the field of foundation pit support, and the technical scheme is as follows: the foundation pit supporting device comprises a main supporting plate and auxiliary supporting plates, wherein the main supporting plate is abutted against the inner wall of a foundation pit, the auxiliary supporting plates are abutted against the outer wall of a wall body, and a plurality of supporting pieces are arranged between the main supporting plate and the auxiliary supporting plates along the length direction of the main supporting plate; the supporting piece comprises two supporting plates, one ends of the two supporting plates penetrate through the main supporting plate through first bolts and are driven into a soil body on the inner wall of the foundation pit, the other ends of the two supporting plates penetrate through the auxiliary supporting plate through second bolts and are driven into the wall body, rotary grooves are formed in the opposite sides of the two supporting plates, the two supporting plates are mutually spliced through the rotary grooves, two extending plates are respectively arranged on two sides of one supporting plate, a pressure sensor is arranged on each extending plate and is in contact with the other supporting plate, and the pressure sensor transmits a pressure value to the monitoring room; has the technical effects that: the condition of the inner wall of the foundation pit can be monitored, monitoring personnel can find problems in advance, and precautionary measures can be taken.
Description
Technical Field
The invention relates to the technical field of foundation pit supporting, in particular to a foundation pit support plate structure.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The person who is not excavated can use the method of putting the side slope to stabilize the earth slope, and the size of the slope is determined according to the relevant construction regulations. When a building is excavated deeply and nearby, the method of supporting the foundation pit wall, the method of protecting the wall by spraying concrete, the method of interlocking a large foundation pit even by adopting an underground continuous wall and column type cast-in-situ bored piles and the like can be used for preventing the outside soil layer from collapsing.
The above prior art solutions have the following drawbacks: by adopting methods such as interlocking of underground continuous walls and column-type cast-in-situ bored piles and the like, although a good supporting effect can be achieved, the conditions of soil layers can be changed, so that the situation of insufficient supporting can occur in local areas, and workers cannot accurately know the change in real time after construction is finished, so that the problems are difficult to find in advance and precautionary measures are taken.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a foundation pit support plate structure which has the effects of ensuring the foundation pit support, monitoring the condition of the inner wall of the foundation pit, being beneficial to monitoring personnel to find problems in advance and making precautionary measures.
The technical purpose of the invention is realized by the following technical scheme: a foundation pit support bracing plate structure comprises a main bracing plate and an auxiliary bracing plate, wherein the main bracing plate is abutted against the inner wall of a foundation pit, the auxiliary bracing plate is abutted against the outer wall of a wall body, and a plurality of supporting pieces are arranged between the main bracing plate and the auxiliary bracing plate along the length direction of the main bracing plate; a support member: including two backplate, two in the one end of backplate passes the main backup pad through first bolt and squeezes into the soil body of foundation ditch inner wall, in the other end passed vice backup pad through the second bolt and squeezes into the wall, two the turn trough has been seted up on one side that the backplate is relative, two the backplate passes through the turn trough and pegs graft each other, one of them the both sides of backplate are equipped with an extension board respectively, be equipped with pressure sensor on the extension board, pressure sensor contacts with another backup pad, pressure sensor transmits pressure value to monitor.
Through the technical scheme, the main supporting plate and the auxiliary supporting plate are connected through the plurality of supporting pieces, so that the two supporting plates of the plurality of groups can play a role in supporting the inner wall of the foundation pit for safety protection; after the installation finishes, pressure sensor conflicts on another backplate, and transmit pressure value to the monitor, thereby the control personnel can real-timely observe the pressure value of each support piece department at the monitor, when the foundation ditch inner wall has the trend of inside oppression, two backplate atress, thereby take place relative rotation, the pressure that pressure sensor received at this moment increases, the control personnel can discover the position that pressure surpassed the safe value rapidly in the monitor, then fast accurate going to corresponding position and consolidate or make safety measure, such design, when guaranteeing to the foundation ditch support, very big improvement to the monitoring precision of foundation ditch inner wall condition, be favorable to the control personnel to discover the problem in advance and make precautionary measure, the security when having improved staff's construction.
The invention is further configured to: the groove edge of the rotary groove is provided with a round angle, and the round angle is coated with a wear-resistant layer.
Through above-mentioned technical scheme, the design of fillet is convenient for two fender boards and is in grafting department rotation each other, and the wearing layer then can reduce the possibility of fender wearing and tearing to improve the life and the safety and stability of fender board.
The invention is further configured to: the bottom of the pressure sensor is hinged on the extension plate.
Through above-mentioned technical scheme, even two supporting plates rotate relatively and changed the contained angle between the two, pressure sensor also can take place to rotate to keep conflicting all the time, paste the state of flat on the supporting plate, and then improve pressure sensor's atress accuracy.
The invention is further configured to: the extension plate is provided with two hinged plates, sliding grooves are formed in the hinged plates, sliding blocks are connected in the sliding grooves in a sliding mode, the bottom of the pressure sensor is connected with a rotating shaft in a rotating mode, the two ends of the rotating shaft are connected to the two sliding blocks respectively, compression springs are arranged in the sliding grooves, and the two ends of each compression spring are connected to one end, far away from the pressure sensor, of the sliding groove and the sliding block respectively.
Through above-mentioned technical scheme, two backplate rotates each other and when making pressure sensor atress, two sliders can slide in the spout, and compression spring is compressed this moment to give a buffering of pressure sensor, reduced the too big and by the possibility of crushing of pressure sensor atress, so that operator repetitious usage backplate and pressure sensor.
The invention is further configured to: the periphery of one side of the pressure sensor, which faces the supporting and protecting plate, is provided with a sealing leather edge.
Through above-mentioned technical scheme, the clearance between pressure sensor and the supporting plate can be filled to sealed leather side to play a sealed effect to pressure sensor, reduce impurity such as rainwater, dregs of soil or rubble and get into between pressure sensor and the supporting plate, guarantee the work that pressure sensor can be stable.
The invention is further configured to: wear to be equipped with main water pipe in the main backup pad, the one end of main water pipe is towards the foundation ditch bottom, and the other end extends the foundation ditch and is connected with the suction pump.
Through above-mentioned technical scheme, the suction pump can absorb water to the peripheral bottom of foundation ditch through the main water pipe to reduce the peripheral soil body water content of foundation ditch, improve the peripheral soil body intensity of foundation ditch bottom, thereby reduce the possibility that the foundation ditch bottom soil body runs off, also can guarantee that the foundation ditch bottom is dry, the staff of being convenient for is under construction, reduces the possibility that the staff slided, improves the construction safety nature.
The invention is further configured to: one side of the main water pipe facing the bottom of the foundation pit is communicated with a plurality of water distribution pipes, and the pipe orifices of the water distribution pipes are distributed along the length direction of the main supporting plate.
Through the technical scheme, the water distribution pipe can more uniformly absorb the water on the periphery of the bottom of the foundation pit, so that the accumulated water on the bottom of the foundation pit can be uniformly reduced on a large scale, and the possibility that part of the accumulated water cannot be absorbed by the main water pipe is reduced.
The invention is further configured to: and the outer parts of the main water pipe and the water distribution pipe are wrapped with damping sponge layers.
Through the technical scheme, main water pipe and distributive pipe can produce certain vibrations when absorbing water, because damping sponge itself has flexibility and porous structure, consequently, the damping sponge layer can play an energy-absorbing effect, reduce the vibrations of main water pipe and distributive pipe, and prevent to produce direct striking between main water pipe and distributive pipe and the main backup pad, thereby the structural stability of main backup pad has been guaranteed, with the influence that main water pipe and distributive pipe during operation produced main backup pad, and then the stability of strutting of main backup pad to foundation ditch inner wall has been improved.
The invention is further configured to: and a plurality of lower anchor rods inserted into the bottom of the foundation pit are arranged at the bottom of the main supporting plate.
Through above-mentioned technical scheme, the anchor rod can be with main fagging anchor in the foundation ditch bottom down, can be fixed once more to main fagging on the one hand, improves the stability of strutting of main fagging, and on the other hand can improve the anti-tilt ability of main fagging, reduces the possibility that main fagging atress was emptyd to main fagging has improved the ability of strutting of main fagging to the foundation ditch inner wall greatly.
The invention is further configured to: the top of the main supporting plate is provided with a plurality of diagonal draw bars, and the diagonal draw bars are inserted into the soil body.
Through the technical scheme, the diagonal draw bars can anchor the top of the main supporting plate in the soil body, and at the moment, the main supporting plate is stably attached to the inner wall of the foundation pit through the diagonal draw bars, so that the possibility that the main supporting plate accidentally overturns and falls off can be reduced; and the operator can pass through the diagonal draw bar anchor in the soil body with the main fagging earlier to the installation of other parts of follow-up reduces the main fagging skew in the installation, the possibility that drops, security when having improved the construction.
In conclusion, the invention has the following beneficial effects:
1. while the foundation pit support is ensured, the monitoring precision of the condition of the inner wall of the foundation pit is greatly improved, monitoring personnel can find problems in advance and take precautionary measures, and the safety of the working personnel during construction is improved;
2. the main water pipe and the water distribution pipe can absorb water from the bottom of the periphery of the foundation pit, so that the water content of the soil body of the periphery of the foundation pit is reduced, and the strength of the soil body of the periphery of the bottom of the foundation pit is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is a schematic structural diagram of the present embodiment for embodying the first bolt and the second bolt.
Fig. 3 is a schematic structural diagram of the support guard plate according to the embodiment.
Fig. 4 is an enlarged view of a portion a in fig. 1.
Fig. 5 is a schematic structural diagram of the water knockout pipe according to the embodiment.
Reference numerals: 1. a foundation pit; 2. a wall body; 3. a main supporting plate; 31. a lower anchor rod; 32. a diagonal member; 33. a bottom edge; 4. a secondary supporting plate; 5. a support member; 51. supporting the guard plate; 52. a first bolt; 53. a second bolt; 54. rotating the groove; 541. round corners; 55. an extension plate; 56. a pressure sensor; 561. sealing the leather edges; 6. a hinge plate; 61. a chute; 62. a slider; 63. a rotating shaft; 64. a compression spring; 7. a main water pipe; 71. a water diversion pipe; 72. a shock absorbing sponge layer; 8. a water pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the utility model provides a foundation ditch enclosure fagging structure, as figure 1, includes main fagging 3 and vice fagging 4, and main fagging 3 is contradicted on 1 inner wall of foundation ditch, and vice fagging 4 is contradicted on 2 outer walls of wall body, is equipped with a plurality of support piece 5 along the length direction of main fagging 3 between main fagging 3 and the vice fagging 4, and the interval between each support piece 5 equals.
As shown in fig. 2 and 3, the supporting member 5 includes two supporting plates 51 with the same size, a rotating groove 54 is formed in the middle of one side of each of the two supporting plates 51 opposite to each other, the groove edge of the rotating groove 54 is provided with a circular bead 541, so that the two supporting plates 51 can rotate smoothly, and the circular bead 541 is coated with a wear-resistant layer (not shown in the figure) made of high-hardness rubber to improve the wear-resistant capability of the groove edge of the rotating groove 54, thereby prolonging the service life of the two supporting plates 51. One end of the two supporting plates 51 passes through the main supporting plate 3 through the first bolt 52 and is driven into the soil body on the inner wall of the foundation pit 1, and the other end passes through the auxiliary supporting plate 4 through the second bolt 53 and is driven into the wall body 2, so that the main supporting plate 3 and the auxiliary supporting plate 4 are connected through the two supporting plates 51, and when the inner wall of the foundation pit 1 has a trend of moving inwards, the main supporting plate 3 can play a supporting role for the foundation pit 1 through the two supporting plates 51.
As shown in fig. 1 and 4, the supporting member 5 further includes two extending plates 55, the two extending plates 55 are respectively located at two sides of one of the supporting plates 51, and one side of the two extending plates 55 facing the other supporting plate 51 is provided with a pressure sensor 56, one side of the pressure sensor 56 facing the extending plate 55 is rotatably connected with a rotating shaft 63, the extending plate 55 is provided with two hinged plates 6, the two hinged plates 6 are respectively provided with a sliding groove 61, a sliding block 62 is slidably connected in the sliding groove 61, two ends of the rotating shaft 63 are respectively fixed on the two sliding blocks 62, a compression spring 64 is arranged in the sliding groove 61, two ends of the compression spring 64 are respectively fixed on one end of the sliding groove 61 away from the pressure sensor 56 and the sliding block 62, and the compression spring 64 is always in a compressed state, so as to push the pressure sensor 56 to always abut against the surface of the other supporting plate 51, and, therefore, the pressure sensor 56 can be completely attached to the other support plate 51, and the periphery of the pressure sensor 56 facing the support plate 51 is provided with a sealing leather edge 561 to prevent impurities such as rainwater, soil, and gravel from entering between the pressure sensor 56 and the support plate 51. The outside of foundation pit 1 is equipped with the control room, and each pressure sensor 56 is through the mode of wireless transmission with pressure numerical value signal transmission to control room.
As shown in fig. 1, after the pressure sensor 56 is installed, the pressure sensor 56 will always abut against another supporting plate 51 and transmit the pressure value to the monitoring room (not shown in the figure), so that the monitoring personnel can observe the pressure value of each supporting member 5 in real time in the monitoring room, when the inner wall of the foundation pit 1 has a tendency of pressing inwards, the two supporting plates 51 are slightly deformed by force and relatively rotate, at this time, the pressure applied by the pressure sensor 56 is increased, the monitoring personnel can quickly find the position where the pressure exceeds the safety value in the monitoring room, and then quickly and accurately go to the corresponding position to reinforce or make safety measures, such design greatly improves the monitoring accuracy of the inner wall condition of the foundation pit 1 while ensuring the support of the foundation pit 1, and is beneficial for the monitoring personnel to find problems and make precautionary measures in advance, the safety of staff during construction has been improved.
As shown in fig. 1, a plurality of diagonal draw bars 32 are further inserted through the top of the main supporting plate 3, and the diagonal draw bars 32 are obliquely inserted into the soil body downwards, so that the top of the main supporting plate 3 is fixed on the inner wall of the foundation pit 1. The bottom of main fagging 3 is equipped with a plurality of films, wear to be equipped with the lower stock 31 that inserts 1 bottom in foundation ditch on the film, interval between two adjacent lower stocks 31 is the same, thereby stock 31 can be fixed the bottom of main fagging 3 in 1 bottom in foundation ditch down, make main fagging 3 itself have certain compressive capacity, thereby improve the ability of strutting to 1 inner wall in foundation ditch, and down stock 31 can be with the quick fixing in 1 bottom in foundation ditch of main fagging 3, main fagging 3 takes place the possibility of empting when reducing the installation, so that the operator carries out the installation of other parts.
If fig. 1 and 5, wear to be equipped with main water pipe 7 in the main backup pad 3, the one end of main water pipe 7 extends to 1 bottom of foundation ditch and communicates and has a plurality of distributive pipe 71, and the other end then extends foundation ditch 1 and is connected with suction pump 8, and suction pump 8 during operation can draw water to 1 bottom of foundation ditch through main water pipe 7 and distributive pipe 71 to reduce the ponding of 1 bottom of foundation ditch, so that the staff is under construction in foundation ditch 1. The water distribution pipes 71 are sequentially distributed between two adjacent lower anchor rods 31, so that water can be uniformly pumped from the bottom of the foundation pit 1. The outside parcel of main water pipe 7 and distributive pipe 71 has shock attenuation sponge layer 72, main water pipe 7 and distributive pipe 71 can produce certain vibrations when absorbing water, because shock attenuation sponge itself has flexibility and porous structure, consequently shock attenuation sponge layer 72 can play an energy-absorbing's effect, reduce the vibrations of main water pipe 7 and distributive pipe 71, and prevent to produce direct striking between main water pipe 7 and distributive pipe 71 and the main backup pad 3, thereby the structural stability of main backup pad 3 has been guaranteed, with the influence that reduces main water pipe 7 and distributive pipe 71 during operation and produce main backup pad 3, and then the stability of strutting of main backup pad 3 to foundation ditch 1 inner wall has been improved.
The construction steps are as follows: firstly, the main supporting plate 3 is hung and attached to the inner wall of the foundation pit 1, the distance between the water distribution pipe 71 and the bottom of the foundation pit 1 is controlled to be 3 cm-5 cm, then the lower anchor rod 31 penetrates through the bottom sheet and is driven into the soil body at the bottom of the foundation pit 1, the bottom of the main supporting plate 3 is quickly and conveniently fixed, and then the diagonal draw rod 32 penetrates through the top of the main supporting plate 3 and is obliquely inserted downwards into the soil body to fix the upper portion of the main supporting plate 3. Then an operator pastes the auxiliary supporting plate 4 on the outer wall of the wall body 2, then the two supporting plates 51 are spliced to form an X shape, the cross angle between the two supporting plates 51 is 90 degrees, two ends of the two supporting plates 51 are respectively fixed on the main supporting plate 3 and the auxiliary supporting plate 4 through a first bolt 52 and a second bolt 53, wherein the first bolt 52 of the first bolt 52 penetrates through the main supporting plate 3 and is driven into the soil body on the inner wall of the foundation pit 1, the second bolt 53 penetrates through the auxiliary supporting plate 4 and is driven into the wall body 2, and the installation of the supporting member 5 is completed. After all the supporting members 5 are installed, the construction is completed, and at this time, the pressure sensors 56 respectively contact with the corresponding supporting plates 51, and transmit respective pressure values to the monitoring room in a wireless transmission manner.
The monitoring room firstly records the corresponding value of each pressure sensor 56, then based on the value, the change of the pressure value of each pressure sensor 56 is detected in real time, when the pressure value of a certain area is increased to the warning value, the monitoring room gives an alarm, thereby facilitating the operator to quickly find the dangerous area and take corresponding measures.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A foundation pit bracing plate structure is characterized in that: the foundation pit supporting structure comprises a main supporting plate (3) and an auxiliary supporting plate (4), wherein the main supporting plate (3) is abutted against the inner wall of a foundation pit (1), the auxiliary supporting plate (4) is abutted against the outer wall of a wall body (2), and a plurality of supporting pieces (5) are arranged between the main supporting plate (3) and the auxiliary supporting plate (4) along the length direction of the main supporting plate (3);
support (5): the device comprises two supporting and protecting plates (51), wherein one ends of the two supporting and protecting plates (51) penetrate through a main supporting plate (3) through first bolts (52) and are driven into a soil body on the inner wall of a foundation pit (1), the other ends of the two supporting and protecting plates penetrate through an auxiliary supporting plate (4) through second bolts (53) and are driven into a wall body (2), rotating grooves (54) are formed in opposite sides of the two supporting and protecting plates (51), the two supporting and protecting plates (51) are mutually inserted through the rotating grooves (54), two extending plates (55) are respectively arranged on two sides of one supporting and protecting plate (51), pressure sensors (56) are arranged on the extending plates (55), the pressure sensors (56) are in contact with the other supporting and protecting plate (51), and the pressure sensors (56) transmit pressure values to a monitoring room;
the edges of the rotary groove (54) are provided with round corners (541), and the round corners (541) are coated with wear-resistant layers;
the bottom of the pressure sensor (56) is hinged on the extension plate (55);
be equipped with two articulated slab (6) on extension board (55), spout (61) have been seted up on articulated slab (6), the inside sliding of spout (61) is connected with slider (62), the bottom of pressure sensor (56) is rotated and is connected with pivot (63), the both ends of pivot (63) are connected respectively on two slider (62), be equipped with compression spring (64) in spout (61), the both ends of compression spring (64) are connected respectively on one end and slider (62) that pressure sensor (56) were kept away from in spout (61).
2. The foundation pit support plate structure of claim 1, wherein: the periphery of one side, facing the support guard plate (51), of the pressure sensor (56) is provided with a sealing leather edge (561).
3. The foundation pit support plate structure of claim 1, wherein: wear to be equipped with main water pipe (7) in main fagging (3), the one end of main water pipe (7) is towards foundation ditch (1) bottom, and the other end extends foundation ditch (1) and is connected with suction pump (8).
4. The foundation pit support plate structure of claim 3, wherein: one side of the main water pipe (7) facing the bottom of the foundation pit (1) is communicated with a plurality of water distribution pipes (71), and the pipe orifices of the water distribution pipes (71) are distributed along the length direction of the main supporting plate (3).
5. The foundation pit support plate structure of claim 4, wherein: and the main water pipe (7) and the water distribution pipe (71) are wrapped with a damping sponge layer (72).
6. The foundation pit support plate structure of claim 5, wherein: the bottom of the main supporting plate (3) is provided with a plurality of lower anchor rods (31) inserted into the bottom of the foundation pit (1).
7. The foundation pit support plate structure of claim 1, wherein: the top of the main supporting plate (3) is provided with a plurality of diagonal draw bars (32), and the diagonal draw bars (32) are inserted into the soil body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911160629.1A CN110904976B (en) | 2019-11-23 | 2019-11-23 | Foundation pit support plate structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911160629.1A CN110904976B (en) | 2019-11-23 | 2019-11-23 | Foundation pit support plate structure |
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| CN110904976A CN110904976A (en) | 2020-03-24 |
| CN110904976B true CN110904976B (en) | 2021-07-13 |
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| CN114150678B (en) * | 2021-12-30 | 2022-11-04 | 正飞建安工程集团有限公司 | Underground continuous wall foundation pit supporting structure and construction method thereof |
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| KR101538162B1 (en) * | 2014-10-14 | 2015-07-21 | 주식회사 백년 | Cost reductive earth retaining wall having easy assembling and disassembling and constructin method of the same |
| CN205576935U (en) * | 2016-04-11 | 2016-09-14 | 中铁建大桥工程局集团第四工程有限公司 | A truss support steel sheet pile supporting device for deep -cutting slot |
| CN108088410A (en) * | 2017-12-26 | 2018-05-29 | 上海建工集团股份有限公司 | Underground enclosure wall integration deformation monitoring system and monitoring method |
| CN207904932U (en) * | 2018-02-09 | 2018-09-25 | 黄河科技学院 | A kind of circular pit steel construction foundation pit supporting construction |
| CN109056743A (en) * | 2018-09-03 | 2018-12-21 | 东华理工大学 | A kind of intelligence pattern foundation pit supporting structure mechanism and its application method |
| CN208830322U (en) * | 2018-09-19 | 2019-05-07 | 中铁一局集团有限公司 | A kind of subway foundation reinforced support device |
| CN110185044B (en) * | 2019-06-17 | 2023-12-12 | 中铁上海设计院集团有限公司 | Foundation pit side wall stress adjustment system for deep unstable stratum |
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