CN212582697U

CN212582697U - A foundation ditch retaining structure for housing construction

Info

Publication number: CN212582697U
Application number: CN202020889202.7U
Authority: CN
Inventors: 夏学根
Original assignee: Chengdu Tianzhu Construction Engineering Co ltd
Current assignee: Chengdu Tianzhu Construction Engineering Co ltd
Priority date: 2020-05-23
Filing date: 2020-05-23
Publication date: 2021-02-23
Anticipated expiration: 2030-05-23

Abstract

The utility model relates to a foundation pit retaining structure for housing construction, which belongs to the technical field of foundation pit support and comprises a plurality of stand columns, a plurality of inserted bars are arranged on the stand columns, water-stop sheets are arranged between adjacent stand columns, each water-stop sheet comprises a plurality of splicing plates, both ends of each splicing plate are provided with connecting blocks, moving blocks are arranged on the surfaces of the connecting blocks, which are far away from the splicing plates, groove bodies are arranged on each stand column along the height direction of the stand column, a first strip-shaped opening is arranged on both sides of each stand column along the height direction of the stand column, the first strip-shaped opening is communicated with the groove bodies, the same end of the groove bodies and the first strip-shaped openings runs through the stand column arrangement, first fixing pieces for fixing the moving blocks into the groove bodies are arranged in the groove bodies, the water-stop sheets are arranged into a plurality of splicing plates, the water-stop sheets are convenient to transport, and the, the application range of the water-stop sheet is improved.

Description

A foundation ditch retaining structure for housing construction

Technical Field

The utility model belongs to the technical field of the excavation supporting technology and specifically relates to a foundation ditch retaining structure for housing construction is related to.

Background

The retaining plate is a temporary retaining structure for preventing the collapse of grooves and foundation pits earthwork, generally comprises supporting plates and cross braces, and is made of common steel, wood and bamboo. Classification of support forms: the arrangement modes of the supporting plates include transverse plate dense support, transverse plate sparse support, vertical plate dense support, vertical plate sparse support, well safety simple support and the like; the material according to the fagging can be divided into wood fender board, bamboo fender board, steel fender board.

Chinese patent No. CN210086252U discloses a waterproof pile plate wall for supporting a foundation pit, which includes a plurality of integrally formed steel piles that can be directly inserted into the ground, each steel pile has an outer vertical plate and two parallel embedded plates that are vertically fixed on the back of the outer vertical plate and can be embedded into the soil wall, and an embedded groove for embedding soil is formed between the two embedded plates; and a water-stop plate is arranged between every two adjacent steel piles in a blocking and clamping manner.

The above prior art solutions have the following drawbacks: when the height of foundation ditch lateral wall is higher, then can lead to the water-stop sheet area that needs to use great, be not convenient for transport the water-stop sheet to the foundation ditch in and build.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a be used for housing construction's foundation ditch retaining structure convenient to transportation and build.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a foundation pit soil retaining structure for a house building comprises a plurality of stand columns which are arranged at intervals in parallel, a plurality of inserted rods which are used for being inserted into the side wall of a foundation pit are arranged on the stand columns along the height direction of the stand columns, water-stop plates are arranged between every two adjacent stand columns, each water-stop plate comprises a plurality of splicing plates which are spliced with each other, connecting blocks are arranged at two ends of each splicing plate, moving blocks are arranged on the surfaces, deviating from the splicing plates, of the connecting blocks, groove bodies which are used for allowing the moving blocks on the splicing plates at two sides to move in simultaneously are arranged on each stand column along the height direction of the stand columns, first strip-shaped openings which are used for allowing the connecting blocks to pass through are arranged on two sides of each stand column along the height direction of the stand columns, the first strip-shaped openings are communicated with the groove bodies, and the same ends of the groove bodies, the first fixing piece used for fixing the moving blocks into the groove body is arranged in the groove body.

By adopting the technical scheme, the water-stop sheet is arranged into the plurality of splicing plates, so that the water-stop sheet is convenient to transport, and the splicing plates with different numbers can be suitable for the side walls of the foundation pits with different heights, so that the application range of the water-stop sheet is improved; the groove body, the first strip-shaped opening and the moving block are arranged to guide the splicing plates, so that the splicing effect between the adjacent splicing plates is improved, and the splicing plates are convenient to mount and fix; the first fixing piece can fix the moving blocks into the groove body, so that the splicing plates are fixed, and the supporting effect of the splicing plates on the side wall of the foundation pit is improved.

The present invention may be further configured in a preferred embodiment as: first mounting includes the sliding block of length direction sliding connection in the cell body along the cell body, the stand deviates from the height direction of edge stand on the face of inserted bar and has seted up second bar opening, second bar opening and first bar open-ended run through with the end the stand sets up, be provided with on the sliding block and pass second bar opening and extend to the outer dead lever of stand, the tip perpendicular to dead lever that the sliding block was kept away from to the dead lever is provided with the fixed plate, be provided with on the fixed plate and be used for fixing the sliding block to the second mounting of optional position in the cell body.

Through adopting above-mentioned technical scheme, when needs are fixed a plurality of movable blocks to the cell body in, fix the sliding block to the cell body in through the second mounting for the sliding block can be with a plurality of movable blocks butt to the cell body in, thereby make the sliding block can accomplish the fixed of a plurality of movable blocks, adopt its simple structure of setting up of sliding block, fixed effect to a plurality of movable blocks is better.

The present invention may be further configured in a preferred embodiment as: the second fixing piece comprises a sleeve which is sleeved on and connected to the fixing rod in a sliding mode, a spring is arranged between the fixing plate and the sleeve, one end of the spring is fixedly connected to the fixing plate, the other end of the spring is fixedly connected to the sleeve, the spring is sleeved on the fixing rod, and the sleeve is used for resisting the elastic force of the spring to abut against the stand column.

Through adopting above-mentioned technical scheme, when the spring is in compression state, the sleeve can resist the elasticity butt joint of spring to the stand on, thereby increased the frictional force between sleeve and the stand, make the sliding block rely on the frictional force between sleeve and the stand to be fixed to the cell body in, when the position of sliding block is adjusted to needs, through the elasticity drive sleeve that resists the spring break away from the butt relation with the stand can, adopt its fixed mode of setting up of sleeve and spring convenient simple, make things convenient for operating personnel to fix a plurality of splice plates installation.

The present invention may be further configured in a preferred embodiment as: a plurality of fixing holes are formed in the face, deviating from the inserting rod, of the stand column along the height direction of the stand column, the fixing holes are located on two sides of the second strip-shaped opening, and inserting rods used for being inserted into the fixing holes in two sides are arranged on the face, facing the stand column, of the sleeve and located on two sides of the sleeve.

Through adopting above-mentioned technical scheme, the sleeve can resist the elasticity of spring and drive the grafting pole plug-in connection to the fixed orifices in, grafting pole and fixed orifices can be located the removal on the stand and play the effect of prevention to the sleeve for the sliding block is prevented in the cell body, thereby further improved the fixed effect to the sliding block, make the sliding block can be fixed a plurality of movable blocks to the cell body in.

The present invention may be further configured in a preferred embodiment as: and the opposite surfaces of the adjacent splicing plates are respectively provided with an inserting strip and a slot which are matched with each other, and the inserting strip and the slot are arranged along the length direction of the edge of the splicing plate.

Through adopting above-mentioned technical scheme, the setting of cutting and slot has improved the sealed effect between the adjacent splice plate, flows along between the adjacent splice plate when preventing the lateral wall infiltration of foundation ditch to can drive a plurality of splice plates and form a whole, thereby further improved the effect of strutting of a plurality of splice plates to the lateral wall of foundation ditch.

The present invention may be further configured in a preferred embodiment as: and a bottom plate used for being arranged on the bottom wall of the foundation pit is arranged between the adjacent stand columns and below the splicing plates, and the planes where the splicing plates are arranged are perpendicular to the plane where the bottom plate is arranged.

Through adopting above-mentioned technical scheme, the bottom plate can play sealed effect to the clearance between splice plate and the foundation ditch diapire, prevents that the infiltration water from flowing along the gap between splice plate and the foundation ditch diapire to the bottom plate can play the effect of support to a plurality of splice plates, thereby has improved the effect of strutting of a plurality of splice plates to the foundation ditch lateral wall indirectly.

The present invention may be further configured in a preferred embodiment as: the connecting holes are formed in the positions, where the vertical columns are opposite to each other, of the bottom plate, the mounting blocks used for being inserted into the connecting holes are arranged on the edges of the two sides of the bottom plate, and the bottom plate is detachably connected to the adjacent vertical columns through the connecting holes and the mounting blocks.

Through adopting above-mentioned technical scheme, the setting of installation piece and connecting hole can make the bottom plate can dismantle and be connected to on the stand of both sides to the convenience is transported stand and bottom plate respectively with bottom plate and the separation of stand of both sides, adopts the setting of connecting hole and installation piece convenience to bottom plate installation and dismantlement.

The present invention may be further configured in a preferred embodiment as: and the surface of the bottom plate facing the splicing plates is provided with a containing groove for the moving-in of the edge of the splicing plate at the lowest part.

Through adopting above-mentioned technical scheme, the setting of holding tank can play sealed effect to the clearance between splice plate and the bottom plate, prevents that the infiltration water from flowing along the clearance between lower splice plate and the bottom plate to the effect of strutting of bottom plate and splice plate to the foundation ditch lateral wall has further been improved.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the water-stop plates are arranged into a plurality of splicing plates, so that the water-stop plates are convenient to transport and install, and the arrangement of the moving block, the groove body and the first strip-shaped opening can play a guiding effect on the splicing plates, so that the deviation of positions among the splicing plates is prevented, and the supporting effect of the splicing plates on the side wall of the foundation pit is improved;

2. when the spring is in a compressed state, the sleeve can resist the elastic force of the spring to drive the insertion rod to be inserted into the fixing hole, so that the sliding block is fixed into the groove body, the sliding block can enable the plurality of moving blocks to be abutted into the groove body, the sliding block can complete the fixing of the plurality of moving blocks, the fixing mode is convenient and simple, the fixing effect is good, and the supporting effect on the side wall of the foundation pit is further improved by the plurality of fixed splicing plates;

3. the bottom plate can play sealed effect to the gap between splice plate and the foundation ditch diapire, and the splice plate of lower part can peg graft in the holding tank on the bottom plate to improved the sealed effect between splice plate and the bottom plate, prevented that the infiltration water from flowing along the clearance between splice plate and the bottom plate.

Drawings

FIG. 1 is a schematic overall structure;

FIG. 2 is a schematic view for showing the structure of adjacent water-stop sheets;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of a structure for showing a first fastener and a second fastener;

fig. 5 is a schematic view for showing the structure of a connecting block and a moving block;

FIG. 6 is an exploded view for showing the mounting block and the connection hole;

fig. 7 is an enlarged view of a portion B in fig. 6.

In the figure, 1, a column; 11. inserting a rod; 12. a water-stop sheet; 121. splicing plates; 122. connecting blocks; 123. a moving block; 124. cutting; 125. a slot; 13. a trough body; 131. a first bar-shaped opening; 132. a slider; 133. a second strip-shaped opening; 134. fixing the rod; 135. a fixing plate; 136. a sleeve; 137. a spring; 138. a fixing hole; 139. a plug rod; 14. a base plate; 141. connecting holes; 142. mounting blocks; 143. and (6) accommodating the tank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a foundation ditch retaining structure for housing construction, stand 1 including a plurality of mutual intervals and parallel arrangement.

With reference to fig. 1 and 2, in order to fix the column 1 into the sidewall of the foundation pit, a plurality of insertion rods 11 for being inserted into the sidewall of the foundation pit are provided on the column 1 along the height direction of the column 1.

In other embodiments, in order to prevent the insert rod 11 from being detached from the sidewall of the foundation pit, barbs may be disposed at circumferential positions of the insert rod 11.

With reference to fig. 1 and 2, a water-stop sheet 12 is disposed between adjacent columns 1.

With reference to fig. 1 and 2, in order to facilitate transportation and installation of the water-stop sheets 12, each water-stop sheet 12 includes a plurality of splice plates 121 spliced to each other.

With reference to fig. 3 and 5, in order to connect the splicing plates 121 to two adjacent vertical columns 1, connecting blocks 122 are disposed at two ends of each splicing plate 121, a moving block 123 is disposed on a surface of each connecting block 122 departing from the splicing plate 121, a groove 13 for allowing the moving blocks 123 on the splicing plates 121 on two sides to move into simultaneously is disposed on each vertical column 1 along the height direction of the vertical column 1, a first strip-shaped opening 131 for allowing the connecting block 122 to pass is disposed on two sides of each vertical column 1 along the height direction of the vertical column 1, the first strip-shaped opening 131 is communicated with the groove 13, and the groove 13 and the first strip-shaped opening 131 are disposed at the same end of the vertical column 1.

When a plurality of splicing plates 121 need to be installed, the splicing plates 121 drive the connecting block 122 and the moving block 123 to move towards the groove body 13, at the moment, the splicing plates 121 can drive the connecting block 122 to penetrate through the first strip-shaped opening 131, the connecting block 122 can drive the moving block 123 to move into the groove body 13, the fixing of the splicing plates 121 can be completed by repeating the steps, and the groove body 13, the first strip-shaped opening 131 and the moving block 123 can play a role in guiding and positioning the splicing plates 121, so that the splicing effect between the adjacent splicing plates 121 is improved.

In order to fix the plurality of moving blocks 123 into the groove body 13, referring to fig. 3 and 4, a first fixing member for fixing the plurality of moving blocks 123 into the groove body 13 is provided in the groove body 13.

With reference to fig. 3 and 4, the first fixing member includes a sliding block 132 slidably connected in the slot body 13 along the length direction of the slot body 13, a second bar-shaped opening 133 is provided along the height direction of the upright 1 on the surface of the upright 1 departing from the insertion rod 11, the same end of the second bar-shaped opening 133 and the first bar-shaped opening 131 runs through the upright 1, a fixing rod 134 passing through the second bar-shaped opening 133 and extending to the outside of the upright 1 is provided on the sliding block 132, and a fixing plate 135 is provided at the end of the fixing rod 134 far away from the sliding block 132 and perpendicular to the fixing rod 134.

After the installation of a plurality of splice plates 121 is accomplished, the accessible drives fixed plate 135 and moves towards cell body 13 for fixed plate 135 drives sliding block 132 and moves into to cell body 13 in, and sliding block 132 can drive a plurality of movable blocks 123 butt to cell body 13 in, thereby drives a plurality of movable blocks 123 butt to cell body 13 in to a certain extent, has improved the fixed effect to a plurality of movable blocks 123.

In other embodiments, the first fixing member may be replaced by a plurality of bolts that are inserted through and screwed to the upright 1, and the bolts are screwed into the upright 1, so that the bolts can drive the rod portions of the bolts to abut the plurality of moving blocks 123 into the groove 13, and the fixing of the plurality of moving blocks 123 can be completed similarly.

In order to further enhance the fixing effect of the sliding block 132 on the plurality of moving blocks 123, a second fixing member for fixing the sliding block 132 to an arbitrary position in the groove 13 is provided on the fixing plate 135, as shown in fig. 3 and 4.

Referring to fig. 3 and 4, the second fixing member includes a sleeve 136 sleeved and slidably connected to the fixing rod 134, a spring 137 is disposed between the fixing plate 135 and the sleeve 136, one end of the spring 137 is fixedly connected to the fixing plate 135, the other end of the spring 137 is fixedly connected to the sleeve 136, the spring 137 is sleeved on the fixing rod 134, and the sleeve 136 is used for resisting the elastic force of the spring 137 and abutting against the upright 1.

When the spring 137 is in a compressed state, the sleeve 136 can resist the elastic force of the spring 137 and abut against the upright post 1, so that the friction force between the sleeve 136 and the upright post 1 is increased, the sliding block 132 is fixed in the groove body 13 by means of the friction force between the sleeve 136 and the upright post 1, the fixing effect of the sliding block 132 on the plurality of moving blocks 123 is further improved, and when the position of the sliding block 132 needs to be adjusted, the sleeve 136 is driven by resisting the elastic force of the spring 137 to be separated from the abutting relation with the upright post 1.

With reference to fig. 3 and 4, in order to further improve the fixing effect of the sliding block 132 on the moving blocks 123, a plurality of fixing holes 138 are formed in the surface of the upright post 1 away from the insertion rod 11 along the height direction of the upright post 1, the plurality of fixing holes 138 are located on two sides of the second strip-shaped opening 133, and the insertion rod 139 for being inserted into the fixing holes 138 on two sides is arranged on the surface of the sleeve 136 facing the upright post 1 and located on two sides of the sleeve 136.

The sleeve 136 can resist the elastic force of the spring 137 to drive the insertion rod 139 to be inserted into the fixing hole 138, and the insertion rod 139 and the fixing hole 138 can stop the movement of the sleeve 136 along the length direction of the upright post 1, so that the movement of the sliding block 132 along the length direction of the groove body 13 is stopped, and the fixing effect of the sliding block 132 on the plurality of moving blocks 123 is further improved.

With reference to fig. 6 and 7, in order to improve the sealing effect between the plurality of splicing plates 121 and prevent the permeation water from flowing out along the gap between the adjacent splicing plates 121, the opposite surfaces of the adjacent splicing plates 121 are respectively provided with a slip 124 and a slot 125 which are matched with each other, and the slip 124 and the slot 125 are both arranged along the length direction of the edge of the splicing plate 121.

With reference to fig. 6 and 7, in order to prevent the seepage water in the sidewall of the foundation pit from flowing out along the gap between the bottom plate 14 and the bottom wall of the foundation pit, the bottom plate 14 disposed on the bottom wall of the foundation pit is disposed between the adjacent columns 1 and below the plurality of splicing plates 121, and the planes on which the splicing plates 121 are disposed are perpendicular to the planes on which the bottom plate 14 is disposed.

Referring to fig. 6 and 7, in order to detachably connect the bottom plate 14 to the two side columns 1, connecting holes 141 are respectively formed in the opposite surfaces of the adjacent columns 1 and at the positions where the bottom plate 14 is located, mounting blocks 142 for being inserted into the connecting holes 141 are arranged on the two side edges of the bottom plate 14, and the bottom plate 14 is detachably connected to the adjacent columns 1 through the connecting holes 141 and the mounting blocks 142.

In the present embodiment, in combination with fig. 6 and 7, in order to prevent the mounting block 142 from rotating in the connecting hole 141, the cross section of the connecting hole 141 is set to be rectangular, and the mounting block 142 is set to be matched with the rectangular connecting hole 141.

Referring to fig. 6 and 7, in order to prevent the permeation water from flowing out along the gap between the splice plate 121 and the base plate 14, a receiving groove 143 for the edge of the lowermost splice plate 121 to move into is formed on the surface of the base plate 14 facing the splice plate 121.

The implementation principle of the embodiment is as follows: when the foundation pit retaining structure needs to be installed, firstly, the bottom plate 14 drives the installation blocks 142 to be inserted into the connection holes 141 to complete installation of the bottom plate 14, at this time, the upright posts 1 are arranged at specified positions to drive the insertion rods 11 on the upright posts 1 to be inserted into the side walls of the foundation pit to complete installation and fixation of the upright posts 1, at this time, the bottom plate 14 can be positioned on the bottom wall of the foundation pit, the splicing plates 121 drive the connection blocks 122 and the moving blocks 123 to move towards the groove bodies 13, so that the connection blocks 122 penetrate through the first strip-shaped openings 131, the connection blocks 122 can drive the moving blocks 123 to be positioned in the groove bodies 13 to drive the splicing plates 121 to move towards the bottom plate 14, so that the edges of the splicing plates 121 are inserted into the accommodating grooves 143, the steps are repeated, a plurality of the splicing plates 121 are installed between adjacent upright posts 1 to drive the insertion strips 124 on the adjacent splicing, drive the sliding block 132 with fixed plate 135 and move into to the cell body 13 in, sleeve 136 extrusion spring 137 drives spring 137 and is extruded to the compression state this moment, move sliding block 132 to the position at uppermost movable block 123 place and drive sliding block 132 and movable block 123 butt, sleeve 136 can resist spring 137's elasticity and drive peg 139 and peg graft to fixed orifices 138 this moment, thereby make sliding block 132 can be fixed a plurality of movable blocks 123 to the cell body 13 in, accomplish the fixed to a plurality of splice plates 121, the effect of strutting of a plurality of splice plates 121 to the foundation ditch lateral wall has been improved, adopt setting up of a plurality of splice plates 121 to make things convenient for transportation and installation.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a foundation ditch retaining structure for housing construction which characterized in that: the foundation pit supporting structure comprises a plurality of vertical columns (1) which are arranged at intervals in parallel, a plurality of inserting rods (11) which are used for being inserted into the side wall of a foundation pit are arranged on the vertical columns (1) along the height direction of the vertical columns (1), water-stop plates (12) are arranged between every two adjacent vertical columns (1), each water-stop plate (12) comprises a plurality of splicing plates (121) which are spliced with each other, connecting blocks (122) are arranged at two ends of each splicing plate (121), a moving block (123) is arranged on the surface of each connecting block (122) departing from the splicing plates (121), a groove body (13) which is used for allowing the moving blocks (123) on the splicing plates (121) on two sides to move into simultaneously is arranged on each vertical column (1) along the height direction of the vertical columns (1), and a first strip-shaped opening (131) which is used for the connecting blocks (122) to pass through is arranged on two sides of each vertical column (1), the first strip-shaped opening (131) is communicated with the groove body (13), the same end of the groove body (13) and the first strip-shaped opening (131) penetrates through the upright post (1) to be arranged, and a first fixing piece used for fixing the plurality of moving blocks (123) into the groove body (13) is arranged in the groove body (13).

2. A retaining structure for a foundation pit of a housing construction according to claim 1, wherein: first mounting includes sliding block (132) in cell body (13) along the length direction sliding connection of cell body (13), second bar opening (133) have been seted up along the direction of height of stand (1) on the face that stand (1) deviates from inserted bar (11), run through with the one end of second bar opening (133) and first bar opening (131) stand (1) sets up, be provided with on sliding block (132) and pass second bar opening (133) and extend to stand (1) outer dead lever (134), the tip perpendicular to dead lever (134) that sliding block (132) were kept away from in dead lever (134) are provided with fixed plate (135), be provided with on fixed plate (135) and be used for fixing sliding block (132) to the interior optional position's of cell body (13) second mounting.

3. A retaining structure for a foundation pit of a housing construction according to claim 2, wherein: the second fixing piece comprises a sleeve (136) which is sleeved and connected to the fixing rod (134) in a sliding mode, a spring (137) is arranged between the fixing plate (135) and the sleeve (136), one end of the spring (137) is fixedly connected to the fixing plate (135), the other end of the spring (137) is fixedly connected to the sleeve (136), the spring (137) is sleeved on the fixing rod (134), and the sleeve (136) is used for resisting the elastic force of the spring (137) to abut against the upright post (1).

4. A retaining structure for a foundation pit of a housing construction according to claim 3, wherein: a plurality of fixing holes (138) are formed in the face, deviating from the inserting rod (11), of the stand column (1) in the height direction of the stand column (1), the fixing holes (138) are located on two sides of the second strip-shaped opening (133), and inserting rods (139) used for being inserted into the fixing holes (138) on two sides are arranged on the face, facing the stand column (1), of the sleeve (136) and located on two sides of the sleeve (136).

5. A retaining structure for a foundation pit of a housing construction according to claim 1, wherein: the opposite surfaces of the adjacent splicing plates (121) are respectively provided with a cutting (124) and a slot (125) which are matched with each other, and the cutting (124) and the slot (125) are arranged along the length direction of the edge of the splicing plate (121).

6. A retaining structure for a foundation pit of a housing construction according to claim 1, wherein: and a bottom plate (14) used for being arranged on the bottom wall of the foundation pit is arranged between the adjacent upright columns (1) and below the splicing plates (121), and the plane where the splicing plates (121) are arranged is perpendicular to the plane where the bottom plate (14) is arranged.

7. A retaining structure for a foundation pit of a building construction according to claim 6, wherein: connecting holes (141) are formed in the positions, where the adjacent upright columns (1) are opposite to each other, of the bottom plate (14), mounting blocks (142) used for being inserted into the connecting holes (141) are arranged on the edges of the two sides of the bottom plate (14), and the bottom plate (14) is detachably connected to the adjacent upright columns (1) through the connecting holes (141) and the mounting blocks (142).

8. A retaining structure for a foundation pit of a building construction according to claim 7, wherein: and the surface of the bottom plate (14) facing the splicing plates (121) is provided with a containing groove (143) for moving the edge of the splicing plate (121) at the lowest part into.