CN116290006B - Composite protective material foundation pit supporting system and construction method - Google Patents
Composite protective material foundation pit supporting system and construction method Download PDFInfo
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- CN116290006B CN116290006B CN202310559770.9A CN202310559770A CN116290006B CN 116290006 B CN116290006 B CN 116290006B CN 202310559770 A CN202310559770 A CN 202310559770A CN 116290006 B CN116290006 B CN 116290006B
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 164
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 title claims abstract description 14
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims description 42
- 239000002689 soil Substances 0.000 claims description 36
- 238000005056 compaction Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of foundation pit support, in particular to a composite protective material foundation pit support system and a construction method. The supporting device comprises a supporting mechanism, the supporting mechanism comprises a supporting plate, the bottom end of the supporting plate is hinged with a plugboard, the plugboard is inserted into the bottom end of a foundation pit to position the top end of the supporting plate, the top end of the supporting plate is hinged with a grabbing plate, and one end of the grabbing plate is inserted into the ground to position the top of the supporting plate. According to the invention, the supporting plate is firmly pressed on the side wall of the foundation pit through the cooperation among the supporting plate, the grabbing plate and the inserting rod, and the triangular stable supporting effect is formed by cooperation with the driving device, so that the fixing effect of the supporting plate on the side wall of the foundation pit is further improved, the foundation pit supporting device is applicable to foundation pits with different inclined planes, different supporting methods are not needed according to the inclination angle of the side wall of the foundation pit, and the difficulty of foundation pit supporting is reduced.
Description
Technical Field
The invention relates to the technical field of foundation pit support, in particular to a composite protective material foundation pit support system and a construction method.
Background
The foundation pit is a soil retaining structure and measures such as groundwater control and environmental protection required for ensuring safety and stability of an underground space formed by excavating downwards on the ground during construction of the underground structure, and generally, when the foundation pit with different inclination angles is supported by adopting different supporting methods in foundation pits with different inclination angle side walls, different equipment is adopted, so that construction teams need to store equipment for coping with different foundation pits, waste of materials is caused, in addition, when the supporting is installed, construction is troublesome, and because groundwater leaks or rainwater enters around the foundation pit, the foundation pit is blocked by using a water stop plate, and the construction steps of foundation pit supporting are further increased.
Disclosure of Invention
The invention aims to provide a composite protective material foundation pit supporting system and a construction method thereof, which are used for solving the problems in the background technology.
In order to achieve the above object, one of the purposes of the present invention is to provide a composite protection material foundation pit supporting system, which comprises two supporting devices and a driving device arranged between the two supporting devices, wherein the supporting devices comprise supporting mechanisms, each supporting mechanism comprises a supporting plate, the bottom ends of the supporting plates are hinged with inserting plates, the inserting plates are inserted into the bottom ends of the foundation pits to position the top ends of the supporting plates, the top ends of the supporting plates are hinged with grabbing plates, one ends of the grabbing plates are inserted into the ground to position the top ends of the supporting plates, the driving device is used for driving the supporting plates to move, one side of each supporting plate is provided with a compaction mechanism, when the supporting plates are close to the side walls of the foundation pit, the compaction mechanism compacts soil on the side walls of the foundation pit, empty grooves are formed between the compaction mechanism and the supporting plates, the empty grooves are used for collecting rainwater and leaked underground water on two sides of the foundation pit, and synchronous mechanisms are arranged in the supporting plates, and when the supporting plates rotate, the synchronous mechanisms drive the grabbing plates to rotate synchronously.
As a further improvement of the technical scheme, the driving device comprises a lifting frame, two lifting hydraulic rods are arranged at the bottom of the lifting frame and used for driving the lifting frame to move, and a piston rod of the lifting frame and the lifting frame synchronously move.
As a further improvement of the technical scheme, two thrust hydraulic rods are fixedly arranged at two ends of the lifting frame, one end of each thrust hydraulic rod is provided with a hinge piece, each hinge piece is composed of a hinge block and a hinge sleeve, piston rods of the hinge blocks and the thrust hydraulic rods synchronously move, the hinge sleeves are fixedly connected with the supporting plates, and the hinge blocks are hinged with the hinge sleeves.
As a further improvement of the technical scheme, the compacting mechanism comprises a pressing plate, two inserting rods are fixedly connected to one side of the pressing plate, a sleeve rod is sleeved on the side wall of each inserting rod, the sleeve rod is fixedly connected with the supporting plate, one end of each inserting rod is fixedly connected with a compacting spring, and the compacting springs are used for providing thrust for the corresponding inserting rods and are fixedly connected with the supporting plate.
As a further improvement of the technical scheme, the synchronous mechanism comprises a plugging rod, the plugging rod is in plugging fit with the plugboard, one end of the plugging rod is fixedly connected with a sliding gear, one side of the sliding gear is meshed with a synchronous gear, the synchronous gear is rotationally arranged in the supporting plate, one end of the grabbing plate is fixedly connected with a synchronous shaft, the synchronous shaft is rotationally arranged in the supporting plate, and the synchronous shaft is connected with the synchronous gear through a belt.
As a further improvement of the technical scheme, the limiting mechanism is arranged in the supporting plate and comprises a wedge block, the wedge block is slidably arranged in the supporting plate, the bottom end of the wedge block is fixedly connected with a synchronous frame, the bottom end of the synchronous frame is fixedly connected with a friction rod, one end of the friction rod is attached to one end of the inserting plate after the supporting plate is fixed with the grabbing plate, and the friction rod provides a friction force for the inserting plate.
As a further improvement of the technical scheme, one end of one inserted link is fixedly connected with a push rod, and after the positions of the supporting plate and the grabbing plate are fixed, the push rod is attached to the inclined plane of the wedge-shaped block.
As a further improvement of the technical scheme, one end of the sliding gear is rotationally connected with a pull rod, the pull rod is in sliding connection with the supporting plate, and one end of the pull rod is fixedly connected with a thrust spring.
The second object of the invention is to provide a construction method of the composite protective material foundation pit supporting system, which comprises any one of the above steps of:
s1, installing a driving device in a foundation pit, and enabling a supporting plate to be perpendicular to the bottom end of the foundation pit;
s2, the driving device drives the supporting plate to vertically move downwards, so that two thirds of the inserting plate is inserted into soil at the bottom end of the foundation pit;
s3, the driving device drives the supporting plate to be attached to the inclination angle of the side wall of the foundation pit, at the moment, the compaction mechanism compacts soil on the side wall of the foundation pit, an empty groove is formed between the compaction mechanism and the supporting plate, and soil is filled in the empty groove;
s4, when the supporting plate rotates, the synchronous mechanism drives the grabbing plate to rotate, one end of the grabbing plate is inserted into soil, and the fixing of the top position of the supporting plate is completed;
s5, the driving device drives the supporting plate to continuously move downwards, so that the inserting plates are fully inserted into soil at the bottom end of the foundation pit.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the composite protective material foundation pit supporting system and the water purifying method thereof, the supporting plate is firmly pressed on the side wall of the foundation pit through the cooperation among the supporting plate, the grabbing plate and the inserting rod, and a triangular stable supporting effect is formed through cooperation of the supporting plate and the driving device, so that the fixing effect of the supporting plate on the side wall of the foundation pit is further improved, the composite protective material foundation pit supporting system can be suitable for foundation pits with different inclined planes, different supporting methods are not needed according to the inclination angle of the side wall of the foundation pit, and the difficulty of foundation pit supporting is reduced.
2. According to the composite protective material foundation pit supporting system and the water purifying method thereof, in the process of rotation of the supporting plate, the pressing plate compacts soil on the side wall of the foundation pit, and a hollow groove is formed between the pressing plate and the supporting plate, so that rainwater and leaked underground water can be blocked, and a large amount of water is prevented from entering the foundation pit.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the supporting device of the present invention;
FIG. 3 is a schematic view of the support mechanism, compacting mechanism and synchronizing mechanism of the present invention;
FIG. 4 is a schematic view of the compacting mechanism of the present invention;
FIG. 5 is a schematic view of the structure of the synchronizing mechanism and the defining mechanism of the present invention;
FIG. 6 is an enlarged schematic view of the synchronization mechanism of the present invention at A;
FIG. 7 is a schematic diagram of a driving apparatus according to the present invention;
FIG. 8 is a schematic view of the whole structure of the foundation pit of the present invention with inclined side walls;
fig. 9 is a schematic view of the overall structure of the foundation pit of the present invention when the side wall is straight.
The meaning of each reference sign in the figure is:
1. a support device;
11. a support mechanism; 111. a support plate; 112. grabbing a plate; 113. inserting plate; 12. a compacting mechanism; 121. a pressing plate; 122. a rod; 123. compacting the spring; 124. a push rod; 125. a loop bar; 13. a synchronizing mechanism; 131. inserting a connecting rod; 132. a sliding gear; 133. a synchronizing gear; 134. a pull rod; 135. a thrust spring; 136. a synchronizing shaft; 14. a limiting mechanism; 141. wedge blocks; 142. a synchronous frame; 143. a friction lever;
2. a driving device;
21. a lifting hydraulic rod; 22. a lifting frame; 23. a thrust hydraulic lever; 24. a hinge.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-9, in order to ensure that an underground space structure formed by excavating downwards from the ground is in a safe and stable state during construction, soil and groundwater around a foundation pit are blocked and controlled, different foundation pit supporting methods are generally adopted according to inclination angles of side walls and horizontal planes of the foundation pit, and in order to adapt to different foundation pits, a composite protection material foundation pit supporting system is provided, which comprises two supporting devices 1 and a driving device 2 arranged between the two supporting devices 1, wherein the supporting devices 1 comprise a supporting mechanism 11, the supporting mechanism 11 comprises a supporting plate 111, a plugboard 113 is hinged at the bottom end of the supporting plate 111, the plugboard 113 is inserted into the bottom end of the foundation pit to position the top end of the supporting plate 111, a grabbing plate 112 is hinged at the top end of the supporting plate 111, one end of the grabbing plate 112 is inserted into the ground to position the top of the supporting plate 111, and the driving device 2 is used for driving the supporting plate 111 to move.
When the supporting plate 111 is installed on the side wall of the foundation pit, the driving device 2 is required to drive the supporting plate 111 to move, therefore, the driving device 2 comprises a lifting frame 22, two lifting hydraulic rods 21 are arranged at the bottom of the lifting frame 22, and the lifting hydraulic rods 21 are used for driving the lifting frame 22 to move, and a piston rod of the lifting frame 22 and the lifting frame 22 synchronously move.
Two thrust hydraulic rods 23 are fixedly arranged at two ends of the lifting frame 22, one end of each thrust hydraulic rod 23 is provided with a hinge piece 24, each hinge piece 24 consists of a hinge block and a hinge sleeve, piston rods of the hinge blocks and the thrust hydraulic rods 23 synchronously move, the hinge sleeves are fixedly connected with the supporting plates 111, when the hinge blocks and the hinge sleeves are hinged, the supporting plates 111 are arranged in a foundation pit with inclined side walls, firstly, the balance of the supporting plates 111 is fixed to enable the supporting plates to be vertical to the bottoms of the foundation pit, then the lifting hydraulic rods 21 drive the lifting frame 22 to move downwards, the lifting frame 22 drives the supporting plates 111 to move downwards through the thrust hydraulic rods 23 and the hinge pieces 24, at the moment, the supporting plates 111 drive the bottom ends of the inserting plates 113 to be inserted into soil at the bottom ends of the foundation pit, after two thirds of the length of each inserting plate 113 is inserted into the soil, the lifting hydraulic rods 21 stop working, the thrust hydraulic rod 23 pushes the supporting plate 111 to be gradually consistent with the inclination angle of the side wall of the foundation pit, at the moment, one end of the grabbing plate 112 is gradually inserted into soil on the ground, after one end of the grabbing plate 112 is completely inserted into the soil, the thrust hydraulic rod 23 stops working, the lifting hydraulic rod 21 drives the lifting frame 22 to move downwards, the inserting plate 113 is completely inserted into the soil on the bottom of the foundation pit, in the process that the inserting plate 113 and the supporting plate 111 move downwards, the grabbing plate 112 applies a pulling force to the soil on the ground, the soil between the supporting plate 111 and the grabbing plate 112 is extruded, the compaction of the soil on the side wall of the foundation pit is improved, the supporting effect of the supporting plate 111 on the side wall of the foundation pit is improved, the grabbing plate 112 and the inserting plate 113 respectively position the top end and the bottom end of the supporting plate 111, the side wall of the foundation pit is supported and fixed, and under the action of the thrust hydraulic rod 23 and the lifting hydraulic rod 21, the supporting plate 111 is made, A triangle is formed between the thrust hydraulic rod 23 and the lifting hydraulic rod 21, so that the supporting effect on the side wall of the foundation pit is further improved.
One side of the supporting plate 111 is provided with a compaction mechanism 12, when the supporting plate 111 is close to the side wall of the foundation pit, the compaction mechanism 12 compacts soil on the side wall of the foundation pit, and an empty groove is formed between the compaction mechanism 12 and the supporting plate 111 and is used for collecting rainwater and leaked underground water on two sides of the foundation pit.
Because the grab plate 112 applies a pressure to the soil on the side wall of the foundation pit, the soil on the side wall of the foundation pit may be pulled and collapsed, and therefore, the compaction mechanism 12 comprises the pressing plate 121, one side of the pressing plate 121 is fixedly connected with two inserting rods 122, the side wall of each inserting rod 122 is sleeved with a sleeve rod 125, the sleeve rod 125 is fixedly connected with the supporting plate 111, one end of each inserting rod 122 is fixedly connected with a compaction spring 123, the compaction springs 123 are used for providing a thrust force for each inserting rod 122, the compaction springs 123 are fixedly connected with the supporting plate 111, when the supporting plate 111 is installed, one side of the pressing plate 121 is attached to the side wall of the foundation pit, the elasticity of the compaction springs 123 is overcome in the process of gradually inclining the supporting plate 111, at this time, the pressing plate 121 compacts the side wall of the foundation pit, the grab plate 112 is prevented from collapsing the soil on the side wall of the foundation pit, an empty groove is formed between the pressing plate 121 and the supporting plate 111, soil is filled in the empty groove, and part of water is stored in the empty groove and flows to the bottom along the side wall of the pressing plate 121 when rain or underground water leaks, and a large amount of water is prevented from entering the inside the foundation pit.
The inside of the supporting plate 111 is provided with a synchronizing mechanism 13, and when the supporting plate 111 rotates, the synchronizing mechanism 13 drives the grabbing plate 112 to synchronously rotate.
After the plugboard 113 is inserted into the bottom of the foundation pit, the supporting plate 111 is rotated while the grabbing plate 112 is required to be driven to rotate, therefore, the synchronous mechanism 13 comprises a plugboard 131, the plugboard 131 is in plug-in fit with the plugboard 113, one end of the plugboard 131 is fixedly connected with a sliding gear 132, one side of the sliding gear 132 is meshed with a synchronous gear 133, the synchronous gear 133 is rotationally arranged in the supporting plate 111, one end of the grabbing plate 112 is fixedly connected with a synchronous shaft 136, the synchronous shaft 136 is rotationally arranged in the supporting plate 111, the synchronous shaft 136 is connected with the synchronous gear 133 through a belt, when the supporting plate 111 rotates, the sliding gear 132 does not rotate due to the plug-in fit relation between the plugboard 131 and the plugboard 113, the supporting plate 111 drives the synchronous gear 133 to move, at the moment, the synchronous gear 133 and the sliding gear 132 cooperate to enable the synchronous gear 133 to rotate, the synchronous gear 133 drives the synchronous shaft 136 to rotate through a belt, and the synchronous shaft 136 drives the grabbing plate 112 to rotate, so that the position of the grabbing plate 112 is fixed.
After the backup pad 111 and grab board 112 are all fixed, because can store water in the empty slot for earth of picture peg 113 one side becomes comparatively soft, so need avoid picture peg 113 to take place to rock, consequently, the inside of backup pad 111 is equipped with limiting mechanism 14, limiting mechanism 14 includes wedge 141, wedge 141 slides and sets up in the inside of backup pad 111, the bottom fixedly connected with synchronizing rack 142 of wedge 141, the bottom fixedly connected with friction lever 143 of synchronizing rack 142, backup pad 111 and grab board 112 position after fixed, the one end laminating of friction lever 143 and the one end of picture peg 113, friction lever 143 provides a frictional force for picture peg 113.
After the pressing plate 121 compacts soil on the side wall of the foundation pit, the hinged fit between the supporting plate 111 and the inserting plate 113 is required to be fixed, so that one end of one inserting rod 122 is fixedly connected with the pushing rod 124, after the positions of the supporting plate 111 and the grabbing plate 112 are fixed, the inclined planes of the pushing rod 124 and the wedge block 141 are attached, after the pressing plate 121 compacts soil on the side wall of the foundation pit, the pushing rod 124 moves to the inside of the supporting plate 111, the inclined planes of the pushing rod 124 and the wedge block 141 are attached, the wedge block 141 is driven to move, the wedge block 141 drives the friction rod 143 to move through the synchronous frame 142, at the moment, the friction rod 143 is attached to the inserting plate 113, rotation of the inserting plate 113 is limited, and the shaking of the inserting plate 113 due to water in an empty groove is avoided.
Besides the inclined plane, the side wall of the foundation pit is also straight-faced, namely, is perpendicular to the bottom end of the foundation pit, so that the angle of the grabbing plate 112 needs to be independently adjusted at the moment, one end of the sliding gear 132 is rotationally connected with the pull rod 134, the pull rod 134 is in sliding connection with the supporting plate 111, one end of the pull rod 134 is fixedly connected with the thrust spring 135, the thrust spring 135 is used for providing thrust for the pull rod 134, and when the angle of the grabbing plate 112 needs to be independently adjusted, the pull rod 134 is pulled to enable the sliding gear 132 to be in engagement with the synchronous gear 133, and the angle of the grabbing plate 112 can be adjusted at the moment.
In order to reduce the overall weight of the foundation pit supporting system, the pressing plate 121 and the supporting plate 111 are made of a lightweight waterproof composite material, are convenient to transport and install, and have waterproof performance.
The second purpose of this embodiment is to provide a construction method of a composite protection material foundation pit supporting system, including any one of the above-mentioned composite protection material foundation pit supporting system, including the following method steps:
s1, installing a driving device 2 in a foundation pit, and enabling a supporting plate 111 to be perpendicular to the bottom end of the foundation pit;
s2, the driving device 2 drives the supporting plate 111 to vertically move downwards, so that two thirds of the plugboard 113 is inserted into soil at the bottom end of the foundation pit;
s3, the driving device 2 drives the supporting plate 111 to be attached to the inclination angle of the side wall of the foundation pit, at the moment, the compaction mechanism 12 compacts soil on the side wall of the foundation pit, an empty groove is formed between the compaction mechanism 12 and the supporting plate 111, and soil is filled in the empty groove;
s4, when the supporting plate 111 rotates, the synchronous mechanism 13 drives the grabbing plate 112 to rotate, one end of the grabbing plate 112 is inserted into soil, and the fixing of the top position of the supporting plate 111 is completed;
s5, the driving device 2 drives the supporting plate 111 to move downwards continuously, so that the plugboard 113 is fully inserted into soil at the bottom end of the foundation pit.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a composite protective material foundation ditch support system which characterized in that: the device comprises two supporting devices (1) and a driving device (2) arranged between the two supporting devices (1), wherein the supporting devices (1) comprise a supporting mechanism (11), the supporting mechanism (11) comprises a supporting plate (111), a plugboard (113) is hinged to the bottom end of the supporting plate (111), the plugboard (113) is inserted into the bottom end of a foundation pit to position the top end of the supporting plate (111), a grabbing plate (112) is hinged to the top end of the supporting plate (111), one end of the grabbing plate (112) is inserted into the ground to position the top of the supporting plate (111), and the driving device (2) is used for driving the supporting plate (111) to move;
a limiting mechanism (14) is arranged in the supporting plate (111), the limiting mechanism (14) comprises a wedge block (141), the wedge block (141) is slidably arranged in the supporting plate (111), and the bottom end of the wedge block (141) is fixedly connected with a synchronous frame (142); one side of the supporting plate (111) is provided with a compaction mechanism (12), the compaction mechanism (12) comprises a pressing plate (121), one side of the pressing plate (121) is fixedly connected with two inserting rods (122), the side walls of the inserting rods (122) are sleeved with sleeve rods (125), the sleeve rods (125) are fixedly connected with the supporting plate (111), one ends of the inserting rods (122) are fixedly connected with compaction springs (123), the compaction springs (123) are used for providing thrust for the inserting rods (122), the compaction springs (123) are fixedly connected with the supporting plate (111), one end of one inserting rod (122) is fixedly connected with a push rod (124), and after the positions of the supporting plate (111) and the grabbing plate (112) are fixed, the inclined planes of the push rod (124) and the wedge blocks (141) are attached; when the supporting plate (111) is close to the side wall of the foundation pit, the compaction mechanism (12) compacts soil on the side wall of the foundation pit, an empty groove is formed between the compaction mechanism (12) and the supporting plate (111), the empty groove is used for collecting rainwater and leaked underground water on two sides of the foundation pit, the synchronous mechanism (13) is arranged in the supporting plate (111), and when the supporting plate (111) rotates, the synchronous mechanism (13) drives the grabbing plate (112) to synchronously rotate; the bottom end of the synchronous frame (142) is fixedly connected with a friction rod (143), after the positions of the supporting plate (111) and the grabbing plate (112) are fixed, one end of the friction rod (143) is attached to one end of the inserting plate (113), and the friction rod (143) provides a friction force for the inserting plate (113); after the pressing plate (121) compacts soil on the side wall of the foundation pit, the push rod (124) moves to the inside of the supporting plate (111), the push rod (124) is attached to the inclined surface of the wedge block (141), the wedge block (141) is driven to move, the wedge block (141) drives the friction rod (143) to move through the synchronous frame (142), at the moment, the friction rod (143) is attached to the inserting plate (113), rotation of the inserting plate (113) is limited, and the shaking of the inserting plate (113) caused by water in an empty groove is avoided;
the driving device (2) comprises a lifting frame (22), two lifting hydraulic rods (21) are arranged at the bottom of the lifting frame (22), the lifting hydraulic rods (21) are used for driving the lifting frame (22) to move, and a piston rod of the lifting frame (22) and the lifting frame (22) synchronously move; two thrust hydraulic rods (23) are fixedly arranged at two ends of the lifting frame (22), a connecting piece (24) is arranged at one end of each thrust hydraulic rod (23), each connecting piece (24) is composed of a hinging block and a hinging sleeve, piston rods of the hinging blocks and the thrust hydraulic rods (23) synchronously move, the hinging sleeves are fixedly connected with the supporting plates (111), and the hinging blocks are hinged with the hinging sleeves.
2. The composite protective material foundation pit support system of claim 1, wherein: the synchronous mechanism (13) comprises a plugging rod (131), the plugging rod (131) is in plugging fit with the plug board (113), one end of the plugging rod (131) is fixedly connected with a sliding gear (132), one side of the sliding gear (132) is meshed with a synchronous gear (133), the synchronous gear (133) is rotationally arranged in the supporting plate (111), one end of the grabbing plate (112) is fixedly connected with a synchronous shaft (136), the synchronous shaft (136) is rotationally arranged in the supporting plate (111), and the synchronous shaft (136) is connected with the synchronous gear (133) through a belt.
3. The composite protective material foundation pit support system of claim 2, wherein: one end of the sliding gear (132) is rotationally connected with a pull rod (134), the pull rod (134) is in sliding connection with the supporting plate (111), and one end of the pull rod (134) is fixedly connected with a thrust spring (135).
4. A construction method of a composite protective material foundation pit supporting system, comprising the composite protective material foundation pit supporting system of claim 1, characterized in that: the method comprises the following steps:
s1, installing a driving device (2) in a foundation pit, and enabling a supporting plate (111) to be perpendicular to the bottom end of the foundation pit;
s2, the driving device (2) drives the supporting plate (111) to vertically move downwards, so that two thirds of the inserting plate (113) is inserted into soil at the bottom end of the foundation pit;
s3, the driving device (2) drives the supporting plate (111) to be attached to the inclination angle of the side wall of the foundation pit, at the moment, the compaction mechanism (12) compacts soil on the side wall of the foundation pit, an empty groove is formed between the compaction mechanism (12) and the supporting plate (111), and soil is filled in the empty groove;
s4, when the supporting plate (111) rotates, the synchronous mechanism (13) drives the grabbing plate (112) to rotate, one end of the grabbing plate (112) is inserted into soil, and the fixing of the top position of the supporting plate (111) is completed;
s5, the driving device (2) drives the supporting plate (111) to continuously move downwards, so that the plugboards (113) are fully inserted into soil at the bottom end of the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310559770.9A CN116290006B (en) | 2023-05-18 | 2023-05-18 | Composite protective material foundation pit supporting system and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310559770.9A CN116290006B (en) | 2023-05-18 | 2023-05-18 | Composite protective material foundation pit supporting system and construction method |
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| Publication Number | Publication Date |
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| CN116290006A CN116290006A (en) | 2023-06-23 |
| CN116290006B true CN116290006B (en) | 2023-09-08 |
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Citations (27)
| Publication number | Priority date | Publication date | Assignee | Title |
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