A foundation pit supporting structure and a method for installing the same

Abstract

The application relates to a foundation pit supporting structure which comprises vertically arranged baffle plates, the surface of the baffle plate is provided with a avoiding hole, a drain pipe is horizontally arranged below the avoiding hole, a water inlet hole is arranged on the top wall of the drain pipe relative to the position of the avoiding hole, a water storage bag is fixedly connected to the bottom end of the baffle plate, and the water storage bag is in communication with the drain pipe. The application has the advantages that the generation of quicksand, slope instability and other conditions caused by long-time accumulation of liquid on the side wall of the foundation pit is reduced, and the liquid inside the side wall of the foundation pit can be conveniently discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of foundation pit support, in particular to a foundation pit support structure and a mounting method thereof. BACKGROUND

[0002] With the rapid development of modern construction industry, high-rise and super high-rise buildings are increasing, high-rise and super high-rise buildings are mostly used with compensatory foundation due to large upper load, and generally multi-layer basement is set to facilitate the stability of the building, but this leads to large foundation depth and deep foundation pit excavation, so the soil at the position of the foundation pit needs to be supported, and the current supporting method is generally to shield the soil by directly setting the vertical baffle.

[0003] For the related technologies in the above, the inventor believes that when excavating a deep foundation pit in an area with high underground water level, the soil water layer is cut off, and underground water will continuously seep into the foundation pit, causing quicksand, slope instability or reducing the bearing capacity of the foundation. SUMMARY

[0004] In order to reduce the generation of quicksand, slope instability and other conditions caused by long-term accumulation of liquid on the side wall of the foundation pit, and facilitate the discharge of liquid inside the side wall of the foundation pit, the present application provides a foundation pit support structure and a mounting method thereof.

[0005] The present application provides a foundation pit support structure and a mounting method thereof, which adopts the following technical scheme:

[0006] A foundation pit support structure, comprising a vertically arranged baffle, the surface of the baffle is provided with an avoiding hole, and a drain pipe is horizontally arranged below the avoiding hole, the top wall of the drain pipe is provided with a water inlet hole relative to the position of the avoiding hole, the bottom end of the baffle is fixedly connected with a water storage bag, and the water storage bag is in communication with the drain pipe.

[0007] By adopting the above technical scheme, the baffle is vertically supported on the side wall of the foundation pit, and the baffle abuts against the side wall of the foundation pit, the liquid inside the side wall of the foundation pit can pass through the position of the avoiding hole and enter the inside of the drain pipe, and then enter the inside of the water storage bag through the drain pipe, thereby increasing the mass inside the water storage bag, and then moving the center of gravity downward, providing the supporting capacity of the baffle to the side wall of the foundation pit, reducing the generation of quicksand, slope instability and other conditions caused by long-term accumulation of liquid on the side wall of the foundation pit, and facilitating the discharge of liquid inside the side wall of the foundation pit.

[0008] Optionally, a connecting groove is horizontally formed on the baffle, a connecting plate is fixedly connected to one end of the baffle away from the connecting groove, when two baffles are connected to each other, the connecting plate can extend into the connecting groove, the baffle is provided with a locking plate relative to the position of the connecting groove, the locking plate is slidably connected to the baffle, when the connecting plate extends into the connecting groove, the locking plate can lock and close the connecting groove.

[0009] By adopting the above technical scheme, when two baffles need to be connected to each other, the connecting plate of one baffle extends into the connecting groove, the locking plate moves towards the side close to the connecting groove, and then the locking plate closes the connecting groove, the connecting plate is closed in the connecting groove, and the two baffles are connected to each other, which is convenient for the operation of the operator.

[0010] Optionally, a first linkage plate is horizontally and slidably connected in the connecting groove, a first elastic member is horizontally provided on one side of the first linkage plate away from the locking plate, one end of the first elastic member is fixedly connected to the first linkage plate, the other end of the first elastic member is fixedly connected to the baffle, a second linkage plate is horizontally provided on one end of the first linkage plate away from the connecting plate, the setting direction of the second linkage plate is perpendicular to the setting direction of the first linkage plate, a second elastic member is horizontally provided on one end of the second linkage plate away from the first linkage plate, one end of the second elastic member is fixedly connected to the second linkage plate, the other end of the second elastic member is fixedly connected to the baffle, when the first elastic member is not completely compressed, the first linkage plate and the second linkage plate abut and slide relative to each other, when the first elastic member is completely compressed by the first linkage plate, the first linkage plate and the second linkage plate are separated, and the second linkage plate is fixedly connected to the locking plate.

[0011] By adopting the above technical scheme, by extending the connecting plate into the connecting groove, and pushing the first linkage plate to move towards the side away from the connecting plate, and compressing the first elastic member, when the first linkage plate and the second linkage plate are separated, the second elastic member on the second linkage plate pushes the second linkage plate to move towards the side close to the connecting plate, and then the second linkage plate drives the locking plate to close the connecting groove and close the connecting plate in the connecting groove.

[0012] Optionally, the side close to the first linkage plate of the connecting plate is a sawtooth structure, the side close to the connecting plate of the first linkage plate is a sawtooth structure opposite to the connecting plate, when the connecting plate and the first linkage plate abut, the side close to the first linkage plate of the connecting plate can be in opposite contact with the side close to the connecting plate of the first linkage plate.

[0013] Through the above technical scheme, by setting the first and second sawtooth structures, when the connecting plate extends into the inside of the connecting groove, the first and second sawtooth structures can be relatively occluded, and through the relatively closely connected curved flow channels, the liquid at the position of the foundation pit can be reduced to leak at the positions of the two relatively opposite baffles.

[0014] Optionally, the position of the baffle relative to the avoiding hole is hingedly provided with a pressure flap, which completely covers the avoiding hole.

[0015] Through the above technical scheme, by setting the pressure flap, when the liquid pressure inside the side wall of the foundation pit is small, the discharge of the liquid can be reduced, and when the liquid pressure of the side wall of the foundation pit increases, the liquid inside the side wall of the foundation pit can be discharged from the position of the avoiding hole by pushing the pressure flap to rotate.

[0016] Optionally, a hydrophobic flow channel is vertically provided on the side wall of the baffle relative to the position of the avoiding hole, and the hydrophobic flow channel relatively connects a plurality of avoiding holes.

[0017] Through the above technical scheme, the liquid inside the side wall of the foundation pit passes through the baffle through the avoiding hole, and enters the inside of the drain pipe through the guidance of the hydrophobic flow channel, and the hydrophobic flow channel can reduce the condition that the liquid cannot enter the inside of the drain pipe due to free movement, so as to facilitate the flow guidance of the liquid after passing through the baffle.

[0018] Optionally, the water storage bag is located on the side of the baffle away from the soil, and the bottom wall of the water storage bag is flush with the bottom wall of the baffle.

[0019] Through the above technical scheme, by setting the bottom end of the water storage bag flush with the bottom end of the baffle, the baffle can be supported by the water storage bag, and the support capacity of the water storage bag for the baffle is improved.

[0020] Optionally, first step: draw the positions of the foundation pit and the baffle according to the engineering drawings;

[0021] Second step: dig the foundation pit by the excavator, stand the baffle on the side wall of the foundation pit, and fix and support the bottom end of the baffle with the bottom end of the foundation pit;

[0022] Third step: when the two baffles are relatively connected, extend the connecting plate into the inside of the connecting groove of the other baffle, so that the two adjacent baffles are relatively connected and fixed, so as to assemble a plurality of baffles.

[0023] Fourth step: fix the water storage bag with the baffle, and the water storage bag is located at the end away from the soil, and the water storage bag is relatively connected with the drain pipe.

[0024] By adopting the technical scheme, two baffles are conveniently connected relative to each other, and after being connected, the formed connecting gap can reduce leakage of liquid located at the side wall of the foundation pit from the position of the connecting gap, and the liquid located at the side wall of the foundation pit can enter the inside of the drain pipe through the position of the avoiding hole, and then the liquid located in the inside of the drain pipe can enter the inside of the water storage bag, and the support capacity of the baffle to the side wall of the foundation pit is improved through the water storage bag.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. By vertically supporting the baffle at the side wall of the foundation pit, and abutting the baffle with the side wall of the foundation pit, the liquid located in the inside of the side wall of the foundation pit can pass through the baffle through the position of the avoiding hole, and then enter the inside of the drain pipe, and enter the inside of the water storage bag through the drain pipe, increase the mass in the inside of the water storage bag, and then move the center of gravity downward, provide the support capacity of the baffle to the side wall of the foundation pit, reduce the generation of quicksand, slope instability and other situations caused by long-term accumulation of liquid on the side wall of the foundation pit, and facilitate the discharge of the liquid located in the inside of the side wall of the foundation pit.

[0027] 2. By extending the connecting plate into the inside of the connecting groove, and pushing the first linkage plate to move towards the side away from the connecting plate, and compressing the first elastic member by the first linkage plate, when the first linkage plate and the second linkage plate are separated, the second elastic member on the second linkage plate pushes the second linkage plate to move towards the side close to the connecting plate, and then the second linkage plate drives the locking plate to close the connecting groove, and the connecting plate is closed in the inside of the connecting groove.

[0028] 3. By setting the first sawtooth structure and the second sawtooth structure, when the connecting plate extends into the inside of the connecting groove, the first sawtooth structure and the second sawtooth structure can be engaged relative to each other, and by the plurality of relatively closely connected curved flow channels, the leakage of liquid located at the position of the foundation pit through the positions of the two baffles is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a whole structure schematic view of a foundation pit support structure and a mounting method thereof in the embodiment of the present application;

[0030] Figure 2 is a sectional view of the position of the water storage bag of a foundation pit support structure and a mounting method thereof in the embodiment of the present application;

[0031] Figure 3 is a structure schematic view of the connecting structure position of a foundation pit support structure and a mounting method thereof in the embodiment of the present application;

[0032] Figure 4 is a top view of the connecting structure position of a foundation pit support structure and a mounting method thereof in the embodiment of the present application.

[0033] Explanation of reference signs: 1, baffle; 11, avoiding hole; 12, hydrophobic flow channel; 2, connecting structure; 21, connecting plate; 211, first connecting part; 212, second connecting part; 2121, first sawtooth block; 22, connecting groove; 23, first linkage plate; 231, first spring; 232, second sawtooth block; 24, avoiding groove; 25, second linkage plate; 251, second spring; 26, locking plate; 3, drainage structure; 31, pressure flap; 32, drain pipe; 321, water inlet hole; 33, water storage bag. DETAILED DESCRIPTION

[0034] The following will be described in detail with reference to the accompanying drawings Figures 1-4 The present application is further described in detail.

[0035] The present application discloses a foundation pit support structure and a mounting method thereof. Referring to Figure 1 Figure 2 A foundation pit support structure and a mounting method thereof include vertically arranged baffles 1, connecting structures 2 arranged between adjacent two baffles 1, and drainage structures 3 arranged on the side walls of the baffles 1, which can drain the liquid inside the side walls of the foundation pit.

[0036] The drainage structure 3 includes avoiding holes 11 horizontally arranged on the baffles 1, and the avoiding holes 11 completely penetrate the baffles 1, the baffles 1 vertically arranged at the positions of the avoiding holes 11 are provided with pressure flaps 31, the top walls of the pressure flaps 31 are hingedly arranged with the baffles 1, and when the pressure flaps 31 are vertically arranged, the avoiding holes 11 can be completely shielded, and when the liquid pressure inside the side walls of the foundation pit increases, the pressure flaps 31 can be pushed to rotate, and then the liquid inside the side walls of the foundation pit can pass through the baffles 1 through the avoiding holes 11.

[0037] The baffles 1 vertically arranged at the positions of the avoiding holes 11 are provided with hydrophobic flow channels 12, the hydrophobic flow channels 12 can relatively communicate the avoiding holes 11 in the vertical direction, and the liquid flowing from the avoiding holes 11 can be conveniently guided. The side walls of the baffles 1 are horizontally fixedly connected with drain pipes 32, the top ends of the drain pipes 32 are provided with water inlet holes 321 at the positions of the hydrophobic flow channels 12, and the liquid inside the hydrophobic flow channels 12 can enter the inside of the drain pipes 32 through the water inlet holes 321.

[0038] The baffles 1 are fixedly connected with water storage bags 33 at the ends away from the soil, the water storage bags 33 are located at the lower parts of the baffles 1, the bottom walls of the water storage bags 33 are flush with the bottom walls of the baffles 1, the water storage bags 33 are relatively communicated with the drain pipes 32, the liquid inside the drain pipes 32 can enter the inside of the water storage bags 33, and then the total mass of the water storage bags 33 and the liquid inside the water storage bags 33 is improved, which is convenient for supporting the baffles 1 by the water storage bags 33.​

[0039] Referring to Figure 3 、 Figure 4 The connecting structure 2 comprises a connecting plate 21 located at one end of the baffle 1, the connecting plate 21 is vertically arranged, and the connecting plate 21 is fixedly connected with the baffle 1. A connecting groove 22 is formed at the end of the baffle 1 away from the connecting plate 21, and the end of the connecting groove 22 away from the soil is in communication with the side wall of the baffle 1, and the end of the connecting groove 22 close to the soil is away from the side wall of the baffle 1. When two baffles 1 are adjacent to each other, the connecting plate 21 is inserted into the connecting groove 22.

[0040] The connecting plate 21 is in an "L" shape structure, and the connecting plate 21 comprises a first connecting part 211 fixedly connected with the baffle 1, the setting direction of the first connecting part 211 is the same as that of the baffle 1, and the side wall of the first connecting part 211 is fixedly connected with a second connecting part 212, the second connecting part 212 is vertically arranged, and the second connecting part 212 and the first connecting part 211 are perpendicular to each other.

[0041] The baffle 1 is horizontally arranged with a first linkage plate 23 inside the connecting groove 22, the direction of the first linkage plate 23 is parallel to the direction of the baffle 1, the first linkage plate 23 is slidingly connected with the baffle 1, and the end of the first linkage plate 23 away from the connecting plate 21 is horizontally arranged with a first spring 231, the position of the baffle 1 relative to the first spring 231 is provided with an avoiding groove 24, and the first spring 231 is located inside the avoiding groove 24, one end of the first spring 231 is fixedly connected with the first linkage plate 23, and the other end of the first spring 231 is fixedly connected with the baffle 1.

[0042] The second connecting part 212 is fixedly connected with a first sawtooth block 2121 on the side close to the first connecting plate 21, and a plurality of first sawtooth blocks 2121 are arranged along the setting direction of the second connecting part 212. The first linkage plate 23 is fixedly connected with a second sawtooth block 232 on the side close to the second connecting part 212, a plurality of second sawtooth blocks 232 are arranged along the setting direction of the first linkage plate 23, the first sawtooth blocks 2121 and the second sawtooth blocks 232 are arranged alternately, and the first sawtooth blocks 2121 can be inserted between the two opposite second sawtooth blocks 232.

[0043] The first linkage plate 23 is horizontally arranged with a second linkage plate 25 on the side away from the connecting plate 21, the setting direction of the second linkage plate 25 is perpendicular to the first linkage plate 23, the second linkage plate 25 is slidingly connected with the baffle 1, and the second linkage plate 25 is horizontally arranged with a second spring 251 on the side away from the connecting plate 21, one end of the second spring 251 is fixedly connected with the second linkage plate 25, and the other end of the second spring 251 is fixedly connected with the baffle 1.

[0044] The second linkage plate 25 is vertically provided with a locking plate 26 on the side away from the first linkage plate 23, the locking plate 26 is fixedly connected with the second linkage plate 25, and when the second spring 251 is completely compressed, the locking plate 26 completely exposes the inside of the connecting groove 22, and when the second spring 251 is in a free state, the locking plate 26 seals the connecting groove 22.

[0045] When the connecting plate 21 is inserted into the inside of the connecting groove 22, the connecting plate 21 pushes the first linkage plate 23 to move towards the side away from the connecting plate 21, so that the first linkage plate 23 compresses the first spring 231, the first linkage plate 23 slides with the second linkage plate 25, and when the first spring 231 is completely compressed, the first linkage plate 23 and the second linkage plate 25 are relatively disengaged, so that the second spring 251 pushes the second linkage plate 25 to move towards the side close to the connecting plate 21, drives the locking plate 26 to move with the second linkage plate 25, and shields the connecting groove 22 through the locking plate 26, thereby connecting the two baffle plates 1.

[0046] The embodiment of the application further discloses a construction method of the foundation pit supporting structure, and the specific steps are as follows:

[0047] First step: the positions of the foundation pit and the baffle plate 1 are drawn according to engineering drawings, and then the position of the baffle plate 1 is limited.

[0048] Second step: the foundation pit is dug out by an excavator, the baffle plate 1 is erected on the side wall of the foundation pit, so that the baffle plate 1 is vertically arranged, the side of the baffle plate 1 close to the side wall of the foundation pit abuts against the side wall of the foundation pit, the bottom end of the baffle plate 1 abuts against and is fixed to the bottom wall of the foundation pit, thereby the baffle plate 1 is supported, the side wall of the foundation pit is supported and reinforced by the baffle plate 1, and the situation that the soil on the side wall of the foundation pit slides is reduced.

[0049] Third step: when two baffle plates 1 need to be assembled relative to each other, the connecting plate 21 of one baffle plate 1 is moved to the position opposite to the connecting groove 22 of the adjacent baffle plate 1, then the connecting plate 21 is inserted into the inside of the connecting groove 22, the first linkage plate 23 is pushed by the connecting plate 21 to move towards the side away from the connecting plate 21, the first spring 231 is compressed, and after the first linkage plate 23 and the second linkage plate 25 are disengaged, the second elastic member pushes the second linkage plate 25 to move towards the side close to the connecting plate 21, drives the locking plate 26 to move towards the side close to the connecting plate 21, and the connecting groove 22 is closed through the locking plate 26, thereby the two baffle plates 1 are connected relative to each other.

[0050] Fourth step: when the liquid pressure on the side wall of the foundation pit increases, the liquid pushing pressure flap 31 enters the inside of the avoidance hole 11, and then enters the inside of the drainage flow channel 12 from the inside of the avoidance hole 11, enters the inside of the drain pipe 32 through the guidance of the drainage flow channel 12, and then moves to the inside of the water storage bag 33 on the side wall of the baffle 1, increases the overall mass of the water storage bag 33, moves the center of gravity of the overall baffle 1 downward, and improves the support ability of the water storage bag 33 to the baffle 1, and improves the support ability of the baffle 1 to the side wall of the foundation pit.

[0051] Through the construction method of the foundation pit supporting structure disclosed in the present application, two baffles 1 are relatively connected, and after connection, the connection gap formed can reduce the leakage of the liquid on the side wall of the foundation pit from the position of the connection gap, and the liquid on the side wall of the foundation pit can enter the inside of the drain pipe 32 through the position of the avoidance hole 11, and then the liquid in the inside of the drain pipe 32 can enter the inside of the water storage bag 33, and the support ability of the baffle 1 to the side wall of the foundation pit is improved through the water storage bag 33.

[0052] The above are preferred embodiments of the present application, not to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A foundation pit support structure characterized by: The utility model provides a vertical setting baffle (1), the surface of baffle (1) is provided with the hole (11) of giving way, and the baffle (1) is located below the hole (11) of giving way and is provided with the drain pipe (32) horizontally, the top wall of drain pipe (32) is provided with the water inlet hole (321) relative to the position of hole (11) of giving way, the bottom end of baffle (1) is fixedly connected with water storage bag (33), and water storage bag (33) is communicated with drain pipe (32) opposite, The baffle (1) is provided with a connecting groove (22) horizontally, and the end of the baffle (1) away from the connecting groove (22) is fixedly connected with a connecting plate (21); when two baffles (1) are connected, the connecting plate (21) can extend into the connecting groove (22); the baffle (1) is provided with a locking plate (26) relative to the position of the connecting groove (22); the locking plate (26) is slidably connected with the baffle (1); when the connecting plate (21) extends into the connecting groove (22), the locking plate (26) can lock and close the connecting groove (22); The first linkage plate (23) is slidably connected in the connecting groove (22) horizontally; the first linkage plate (23) is provided with a first elastic member on the side away from the locking plate (26) horizontally; one end of the first elastic member is fixedly connected with the first linkage plate (23); the other end of the first elastic member is fixedly connected with the baffle (1); the first linkage plate (23) is provided with a second linkage plate (25) on the end away from the connecting plate (21) horizontally; the setting direction of the second linkage plate (25) is perpendicular to the setting direction of the first linkage plate (23); the second linkage plate (25) is provided with a second elastic member on the end away from the first linkage plate (23) horizontally; one end of the second elastic member is fixedly connected with the second linkage plate (25); the other end of the second elastic member is fixedly connected with the baffle (1); when the first elastic member is not completely compressed, the first linkage plate (23) and the second linkage plate (25) abut and slide relative to each other; when the first linkage plate (23) completely compresses the first elastic member, the first linkage plate (23) and the second linkage plate (25) are separated; the second linkage plate (25) is fixedly connected with the locking plate (26); The side of the connecting plate (21) close to the first linkage plate (23) is a sawtooth structure; the side of the first linkage plate (23) close to the connecting plate (21) is a sawtooth structure opposite to the connecting plate (21); when the connecting plate (21) and the first linkage plate (23) abut, the side of the connecting plate (21) close to the first linkage plate (23) can be in contact with the side of the first linkage plate (23) close to the connecting plate (21); The baffle (1) is hingedly provided with a pressure flap (31) relative to the position of the hole (11) of giving way; the pressure flap (31) completely covers the hole (11) of giving way. The water storage bag (33) is located on the side of the baffle (1) away from the soil, and the bottom wall of the water storage bag (33) is flush with the bottom wall of the baffle (1).

2. A foundation pit support structure according to claim 1, wherein: The side wall of the baffle (1) is vertically provided with a water flow channel (12) relative to the position of the escape hole (11), and the water flow channel (12) relatively connects a plurality of escape holes (11).

3. A method of constructing a foundation pit support structure according to any one of claims 1 to 2, wherein The specific construction steps are as follows: Step 1: Draw the position of the foundation pit and the baffle (1) according to the engineering drawing; Step 2: Dig the foundation pit with the excavator, stand the baffle (1) on the side wall of the foundation pit, and fix and support the bottom end of the baffle (1) with the bottom end of the foundation pit; Step 3: When the two baffles (1) are connected, the connecting plate (21) is inserted into the connecting groove (22) of the other baffle (1), so that the two adjacent baffles (1) are connected and fixed, thereby assembling a plurality of baffles (1); Step 4: Fix the water storage bag (33) with the baffle (1), and the water storage bag (33) is located away from the soil, and the water storage bag (33) is connected with the drain pipe (32).

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