CN113882395A - Inclined support foundation pit supporting system and construction method - Google Patents

Abstract

The application relates to an inclined support foundation pit supporting system and a construction method, which are applied to the field of geotechnical engineering technology. It includes the bounding wall, a plurality of stands of one side equipartition of bounding wall, the subaerial fixed column that is equipped with of foundation ditch, the fixed column inserts to be fixed subaerial, connect through the bracing subassembly between stand and the fixed column, the bracing subassembly includes the bracing post, be equipped with first adjusting part on the bracing post, first adjusting part butt is on the stand or the butt is on the fixed column, or the both ends of bracing post are equipped with first adjusting part respectively, the first adjusting part butt that is close to the stand is on the stand, the first adjusting part butt that is close to the fixed column is on the fixed column, be equipped with the spout on stand and/or the fixed column, first adjusting part slides in the spout, be equipped with a plurality of fixed orificess in the spout, the bolt is worn to locate in the fixed orifices and fixes first adjusting part in the spout. This application has and can compensate because of the stand has the effect that the error leads to the holding power not enough with the position of corresponding fixed column.

Description

Inclined support foundation pit supporting system and construction method

Technical Field

The application relates to the technical field of geotechnical engineering, in particular to an inclined support foundation pit supporting system and a construction method.

Background

The foundation pit support is a mechanism for protecting the side wall of a foundation pit in foundation pit operation, the existing foundation pit support is divided into support modes such as horizontal support, vertical support and inclined support, wherein the inclined support is generally formed by fixing an inclined support between a column pile and the ground of the foundation pit, and meanwhile, a short pile is vertically inserted into the ground of the foundation pit and used for supporting the inclined support. The supporting force is fixed after the position of the short pile is fixed in such a mode, so that the preset supporting force can be achieved only by accurately positioning the short pile on the ground of the foundation pit, and the side wall of the foundation pit is supported.

The inclined strut in the existing foundation pit inclined support is generally hinged with the short pile, and the other end of the inclined strut is hinged to the column pile, so that the column pile is supported by the inclined strut.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: adopt the bracing to support between stake and stub and provide the holding power, its support angle can't finely tune after the rigidity of stub, can't provide sufficient holding power when the deviation appears in the stub position.

Disclosure of Invention

In order to solve the problem that the supporting angle of a short pile cannot be finely adjusted after the position of the short pile is fixed, the application provides an inclined support foundation pit supporting system and a construction method.

In a first aspect, the application provides an inclined support foundation pit supporting system which adopts the following technical scheme:

an inclined support foundation pit supporting system comprises a coaming which is attached to the inner wall of a foundation pit and arranged, wherein a plurality of stand columns are uniformly distributed on one side of the coaming, which is far away from the inner wall of the foundation pit, the ground of the foundation pit is provided with fixing columns which are in one-to-one correspondence with the stand columns, and the fixing columns are inserted and fixed on the ground of the foundation pit;

the upright post is connected with the fixed post through an inclined strut assembly, the inclined strut assembly comprises an inclined strut post, a first adjusting assembly is arranged at one end of the inclined strut post along the axial direction of the inclined strut post, and the first adjusting assembly abuts against the upright post or the first adjusting assembly abuts against the fixed post;

or two ends of the diagonal brace along the axial direction of the diagonal brace are respectively provided with a first adjusting component, the first adjusting component close to the upright post abuts against the upright post, and the first adjusting component close to the fixed post abuts against the fixed post;

the upright post and/or the fixing column are/is provided with a sliding groove, the first adjusting assembly slides in the sliding groove, a plurality of fixing holes are formed in the sliding groove, and bolts penetrate through the fixing holes to fix the first adjusting assembly in the sliding groove.

Through adopting above-mentioned technical scheme, first adjusting part sets up in the arbitrary one end of bracing column or first adjusting part sets up in one of them one end of bracing column, after the relation of stand and corresponding fixed column is confirmed, slide on the stand or on the fixed column through first adjusting part, thereby adjusted the angle between bracing column and stand, the fixed column, thereby can finely tune the holding power that the bracing column provided under the condition of the position of stand and corresponding fixed column is definite, thereby compensate the defect that the holding power is not enough because of construction error leads to.

Optionally, a plurality of limiting assemblies are detachably fixed in the sliding groove, the limiting assemblies are abutted against the first limiting assemblies, and the position of the first adjusting assembly in the sliding groove is fixed.

Through adopting above-mentioned technical scheme, can restrict first adjusting part's position at first through spacing subassembly after first adjusting part's position control targets in place, be convenient for like this adopt the bolt to fix first adjusting part in corresponding position, reduce artificial work load, improve work efficiency.

Optionally, the first adjusting assembly includes a sliding plate hinged to the diagonal brace, the sliding plate slides in the sliding groove, the sliding plate is provided with a plurality of bolt holes corresponding to the fixing holes, and the bolts penetrate through the bolt holes to fix the sliding plate in the sliding groove.

Through adopting above-mentioned technical scheme, slide in the sliding plate spout and just can adjust the angle between bracing post and stand or bracing post and the fixed column, different pressure is applyed for the stand through the different angles of bracing post, thereby support for the bounding wall provides different support dynamics, can apply bigger holding power for the bounding wall through the angle of adjusting the bracing post after the fixed position of stand and the fixed column that corresponds, thereby play the effect of fine setting, compensate the defect that the holding power is not enough that the installation error because of the fixed column leads to.

Optionally, the limiting assembly includes a limiting block, and the limiting block is fixed in the sliding groove and abuts against the sliding plate.

Through adopting above-mentioned technical scheme, can restrict the sliding plate and slide through inserting the stopper in the spout after the sliding plate is adjusted to target in place, just do not need the manual work to support the position of sliding plate in the spout invariable always in fixed sliding plate for the manual work is lighter convenient when fixed sliding plate, improves work efficiency, reduces artificial work burden.

Optionally, a plurality of accommodating grooves for accommodating the limiting blocks are formed in the sliding groove, and the limiting blocks are detachably fixed in the accommodating grooves through countersunk bolts.

Through adopting above-mentioned technical scheme, the stopper is put in the storage tank and is fixed temporarily through the countersunk head bolt, can avoid the stopper to fall out from the storage tank under the pressure that the sliding plate was applyed when using the stopper this moment, makes the limiting displacement of stopper more firm on the one hand, and on the other hand also can avoid the stopper to fall the incident that the back sliding plate falls the appearance rapidly.

Optionally, the sliding groove is arranged along the length direction of the upright post and/or the fixing post, and the accommodating groove is perpendicular to the length direction of the sliding groove and is arranged in the sliding groove.

Through adopting above-mentioned technical scheme, can lay a plurality of storage tanks in the spout, the even laying of storage tank is in the spout, and the homoenergetic is used for holding the position that the stopper is used for restricting the sliding plate when the sliding plate is located the different positions of spout like this, and it is more convenient to use.

Optionally, the diagonal bracing column comprises an outer bracing column and an inner bracing column, a telescopic groove is formed in the outer bracing column, and one end of the inner bracing column is arranged in the telescopic groove.

By adopting the technical scheme, the inclined supporting column can be a solid column body when only the first adjusting component is arranged, or the outer supporting column and the inner supporting column can be sleeved with each other, and when the inclined supporting column is used, the outer supporting column and the inner supporting column are tightly abutted with each other.

Optionally, the outer support column with be equipped with the second adjusting part between the interior support column, be equipped with a mounting panel on the outer support column with respectively on the interior support column, the second adjusting part is located just butt between the mounting panel.

Through adopting above-mentioned technical scheme, when using interior support column and outer support column to overlap each other and establish and form the bracing column, can set up second adjusting part between interior support column and the outer support column, after first adjusting part adjusts to target in place, if the holding power still has when small error, then the relative position of interior support column and outer support column is adjusted to the accessible, make the whole extension of bracing column or shorten, thereby adjust the holding power of bracing column pair stand, compensate the small error that first adjusting part produced in the accommodation process, make the regulating effect more accurate.

Optionally, the second adjusting component comprises a screw rod and a threaded sleeve sleeved on the screw rod and capable of moving back and forth on the screw rod, the screw rod is arranged on one of the mounting plates, the threaded sleeve is correspondingly arranged on the other one of the mounting plates, and the threaded sleeve is arranged on the other one of the mounting plates and rotates on the other one of the mounting plates.

Through adopting above-mentioned technical scheme, rotate the swivel nut when needing to adjust, thereby the relative position of outer support column and interior support column can be promoted through the mounting panel in the position of adjustment swivel nut on the screw rod, has adjusted the length of whole bracing column, just so can make the holding power of bracing column can obtain improving or reducing to can compensate first adjusting part's accommodate error, make to adjust more accurately.

In a second aspect, the application provides a construction method of an inclined support foundation pit supporting system, which adopts the following technical scheme:

a construction method of an inclined support foundation pit supporting system comprises the following steps:

the installation step: fixing the fixed columns on the ground of the foundation pit in a one-to-one correspondence manner according to the positions of the upright columns on the enclosing plate;

a first adjusting step, namely adjusting the position of a sliding plate abutted against the upright column and/or adjusting the position of the sliding plate abutted against the fixed column, adjusting the angle between the inclined strut and the upright column, and if a second adjusting component is arranged on the inclined strut, turning to a second adjusting step, otherwise, finishing the adjustment;

and a secondary adjusting step, namely rotating the threaded sleeve, and adjusting the position of the threaded sleeve on the screw rod, so that the length of the diagonal bracing column is adjusted, and the adjustment is finished.

Through adopting above-mentioned technical scheme, utilize first adjusting part and the mutual festival of joining in marriage of second adjusting part, when the relative position of fixed column and stand has the error, can adjust bracing column and stand through first adjusting part, the whole length that the angle between the fixed column assisted a second adjusting part to adjust the bracing column adjusts the bracing power that the bracing column was applyed for the stand, even so the stand still can provide sufficient bracing power for stand and bounding wall when having the error to lead to the bracing power not enough with the position of corresponding fixed column.

In summary, the present application includes at least one of the following benefits:

1. when there is an error in the position between the fixed column and the corresponding upright column, the angle of the diagonal bracing column is adjusted by adjusting the position of the sliding plate in the sliding groove in the first adjusting component, and different support forces are provided for the upright column with fixed position through different angles of the diagonal bracing column, so that the deficiency of the support force caused by the error in the position between the upright column and the corresponding fixed column can be made up.

2. If error still finds after using first adjusting part to adjust to accomplish, then the relative position of outer support post and interior support post is adjusted to the swivel nut in the accessible rotation second adjusting part to can indirectly increase or reduce the length of whole bracing strut, adjust the bracing power that the bracing strut gives the stand through the length that changes the bracing strut, thereby compensate the small error that still exists after first adjusting part adjusts the knot, make to adjust more accurately.

Drawings

Fig. 1 is a schematic view of the overall structure of a foundation pit supporting system in the embodiment of the present application;

FIG. 2 is a schematic structural diagram for showing a connection relationship among the upright column, the first adjusting assembly, the bracing column and the fixing column in the embodiment of the present application;

FIG. 3 is a schematic structural diagram for illustrating a connection relationship between a first adjusting assembly and a column in an embodiment of the present application;

fig. 4 is a schematic structural diagram for showing a connection relationship between a first adjusting assembly and a fixing column in the embodiment of the present application;

FIG. 5 is a schematic structural diagram illustrating a connection relationship between a second adjusting component and a raking prop according to an embodiment of the present application;

in the figure: 1. enclosing plates; 2. a column; 3. a diagonal bracing assembly; 31. a diagonal bracing column; 311. an outer support column; 312. an inner support column; 313. a telescopic groove; 32. a first adjustment assembly; 321. a sliding plate; 322. Bolt holes; 33. A limiting component; 331. a limiting block; 332. a containing groove; 34. a chute; 341. a fixing hole; 35. a second adjustment assembly; 351. a screw; 352. a threaded sleeve; 36. mounting a plate; 4. and (5) fixing the column.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses bearing diagonal excavation supporting system. Referring to fig. 1, set up bounding wall 1 on the lateral wall of foundation ditch, bounding wall 1 hugs closely and encloses the fender to the foundation ditch on the lateral wall of foundation ditch, set up a plurality of stands 2 on bounding wall 1, can adopt welding or other fixed modes to fix between bounding wall 1 and the stand 2, then directly bury stand 2 underground and provide a preliminary holding power for bounding wall 1 on the ground of foundation ditch, in order to strengthen the holding power, can correspond at the subaerial fixed column 4 that sets up of the foundation ditch that stand 2 corresponds, fixed column 4 snap-on is subaerial, can use bracing subassembly 3 to support between stand 2 and fixed column 4, thereby provide the holding power and consolidate bounding wall 1.

Referring to fig. 2, the bracing assembly 3 mainly comprises a bracing column 31 and a first adjusting assembly 32, the first adjusting assembly 32 may be fixed at any end of the bracing column 31 or both ends of the bracing column 31 are arranged, in fig. 2, for convenience of representation, the first adjusting assembly 32 is arranged at both ends of the bracing column 31, and by utilizing the direct abutting between the first adjusting assembly 32 and the fixed column 4 and/or the upright column 2 and realizing sliding, the angle between the bracing column 31 and the upright column 2 and the fixed column 4 can be adjusted, so that the supporting force provided by the fixed column 4 to the upright column 2 can be adjusted, and under the condition that the position of the upright column 2 and the corresponding fixed column 4 has a difference, the supporting force can be adjusted to achieve the standard of supporting the enclosure 1.

Referring to fig. 3, when the upright column 2 needs to be attached to the first adjusting assembly 32, a sliding slot 34 for allowing the sliding plate 321 in the first adjusting assembly 32 to slide is disposed on the upright column 2, the sliding plate 321 is hinged to one end of the raking prop 31 close to the upright column 2, so that the sliding plate 321 can rotate, when the sliding plate 321 slides in the sliding slot 34, the angle between the sliding plate 321 and the raking prop 31 can be adjusted, the bolt hole 322 on the sliding plate 321 corresponds to the fixing hole 341 in the sliding slot 34, and the sliding plate 321 is fixed in the sliding slot 34 by a bolt, so that the angle between the raking prop 31 and the sliding plate 321 is adjusted to change the supporting force provided by the raking prop 31 to the upright column 2, and thus when there is an error between the fixed column 4 and the corresponding upright column 2, the angle between the raking prop 31 and the sliding plate 321 is still adjusted to adjust the supporting force provided by the raking prop 31 to the upright column 2, thereby enabling the supporting force to meet the standard.

The first adjusting component 32 for being attached to the upright post 2 can be used independently, namely the first adjusting component 32 attached to the upright post 2 in a hinged mode is directly matched between the diagonal bracing column 31 and the fixed post 4 to realize angle adjustment of the diagonal bracing column 31 and provide different supporting forces for the upright post 2, the first adjusting component 32 can be only attached to the fixed post 4, and the angle adjustment of the diagonal bracing column 31 can also be realized by directly adopting hinged connection between the upright post 2 and the diagonal bracing column 31.

When the first adjusting component 32 needs to be attached to the fixed column 4, referring to fig. 4, a sliding chute 34 which is also used for allowing the first adjusting component 32 to slide is arranged on the fixed column 4, the sliding plate 321 is hinged to one end, close to the fixed column 4, of the raking prop 31, and also slides in the sliding chute 34 on the fixed column 4, the sliding chute 34 on the fixed column 4 can still be provided with a fixing hole 341 which is matched with a bolt hole 322 on the sliding plate 321, the position of the sliding plate 321 is fixed by adopting a bolt, the size of the supporting force provided by the raking prop 31 for the upright column 2 is changed by adjusting the angle between the raking prop 31 and the sliding plate 321, and thus when the position of the fixed column 4 and the corresponding upright column 2 has an error, the size of the supporting force provided by the raking prop 31 for the upright column 2 is still adjusted by adjusting the angle between the raking prop 31 and the sliding plate 321, so that the supporting force can meet the standard.

When the first adjusting component 32 is arranged, only the first adjusting component 32 can be attached to the fixed column 4, that is, only the first adjusting component 32 is hinged to one end of the inclined strut 31 close to the fixed column 4, the first adjusting component 32 can be hinged to one end of the inclined strut 31 close to the upright column 2, the angle between the inclined strut 31 and the upright column 2 and between the inclined strut 31 and the fixed column 4 can be adjusted by the first adjusting component 32 hinged to two ends of the inclined strut 31, when the length of the inclined strut 31 is fixed, the supporting force provided by the inclined strut 31 to the upright column 2 can be adjusted, when the first adjusting component 32 is arranged at two ends of the inclined strut 31, the adjustment between the inclined strut 31 and the upright column 2 and between the inclined strut 31 and the fixed column 4 is more precise, even if the size of the supporting force provided by the inclined strut 31 can be more precise, even if an error exists between the upright column 2 and the corresponding fixed column 4, the first adjusting component 31 and the fixed column 4 can be adjusted, The angle between the upright columns 2 is compensated, namely different supporting forces are provided for the upright columns 2 with fixed positions through different angles of the inclined supporting columns 31, so that the shortage of the supporting force caused by the error between the upright columns 2 and the corresponding fixed columns 4 can be compensated.

Referring to fig. 3 and 4, in order to conveniently fix the sliding plate 321 on the upright 2 or the fixed column 4, the sliding slot 34 may be provided with a limiting component 33, the limiting component 33 includes a limiting block 331, when the sliding plate 321 is adjusted in place, the limiting block 331 is installed, and the limiting block 331 is used to block the stroke of the sliding plate 321, so that the sliding plate 321 is fixed without being held by hands, after the sliding plate 321 is fixed, the limiting block 331 can be removed, or the limiting block 331 can be directly left in the sliding slot 34 to be fixed and matched with a bolt, so that the sliding plate 321 is fixed in the sliding slot 34.

For the position of more convenient fixed sliding plate 321 in spout 34, can set up the storage tank 332 of laying along spout 34 width direction in spout 34, stopper 331 card is in storage tank 332, and can fix stopper 331 in storage tank 332 through countersunk bolt, when sliding plate 321 contacts with stopper 331, supplementary countersunk bolt through storage tank 332's the fixed stopper 331 that can be very firm of blocking effect, avoid sliding plate 321 to lead to sliding plate 321 to fall rapidly because of fixed insecurity, thereby avoid appearing the incident, the work progress is safer.

Referring to fig. 2 and 5, the middle portion of the diagonal support column 31 may be configured in a sleeved structure, that is, the diagonal support column 31 includes an outer support column 311 and an inner support column 312 partially sleeved on the outer support column 311, an expansion slot 313 can be arranged on the end surface of the outer support column 311 along the axial direction of the outer support column 311, one end of the inner support column 312 is directly inserted into the expansion slot 313 and is tightly propped against the bottom of the expansion slot 313, and the length of the inner support is much greater than the depth of the telescopic slot 313, so that when the first adjustment assembly 32 is used, the first adjustment assembly 32 can be directly disposed at the end of the first outer support column 311 far from the telescopic slot 313 and/or the end of the inner support column 312 extending out of the telescopic slot 313, thus, when the outer support column 311 and the inner support column 312 provide support force, the end surface of the outer support column 312 in the telescopic slot 313 always abuts against the bottom of the telescopic slot 313, and the support force provided by the inclined support column 31 to the upright post 2 is not influenced.

A second adjusting component 35 can be further arranged between the outer supporting column 311 and the inner supporting column 312, the second adjusting component 35 is matched with the first adjusting component 32, and after the first adjusting component 32 is adjusted, if a small adjusting error exists, the adjusting error can be made up by adjusting the second adjusting component 35, so that the adjustment is more accurate.

Referring to fig. 5, a mounting plate 36 may be respectively disposed on the outer support column 311 and the inner support column 312, the mounting plates 36 extend outward and are parallel to each other, the second adjusting component 35 is fixed between the mounting plates 36, the second fixing component includes a threaded sleeve 352 and a threaded rod 351, the threaded sleeve 352 is fixed on one of the mounting plates 36 and can rotate, that is, a mounting groove for mounting the threaded sleeve 352 may be disposed on the mounting plate 36, and the threaded sleeve 352 is clamped in the mounting groove, so that the threaded sleeve 352 may be disposed in the mounting groove, and the center of the mounting groove coincides with the center of the threaded sleeve 352, so that the threaded sleeve 352 may rotate in the mounting groove without coming out of the mounting groove. The screw 351 is correspondingly fixed on another mounting plate 36 and can be sleeved with the screw sleeve 352, the screw sleeve 352 rotates on the screw 351 to the last time, namely, the end surface of the inner support column 312 is completely contacted with the bottom of the telescopic groove 313, the end surface of the screw 351 in the screw sleeve 352 is contacted with the bottom of the screw sleeve 352, the screw sleeve 352 is rotated to push the screw 351, so that the inner support column 312 can be indirectly pushed to stretch out and draw back from the telescopic groove 313, the supporting force of the inclined support column 31 for the upright column 2 is adjusted by prolonging the whole length of the inclined support column 31, the first adjusting component 32 is matched, the adjustment of the whole supporting force is completed, and the adjustment is more accurate.

At least one group of second adjusting assemblies 35 is arranged between the outer supporting column 311 and the inner supporting column 312, so that the plurality of groups of second adjusting assemblies 35 can be uniformly surrounded on the diagonal bracing column 31 along the circumference of the diagonal bracing column 31, and the supporting force can be adjusted more accurately.

The implementation principle of the application is as follows: after the coaming 1 is used to form the enclosure on the side wall of the foundation pit, the upright column 2 is arranged on one side of the coaming 1 opposite to the side wall of the foundation pit, the upright column 2 is uniformly arranged around the foundation pit, namely, the upright column 2 is arranged on the coaming 1 at equal intervals and is used for being fixed with the coaming 1. The upright post 2 is fixed with the coaming 1 by welding, riveting or any other known and applicable fixing mode, the upright post 2 is directly inserted into the ground of the foundation pit, and the part of the upright post 2 exposed out of the ground is as high as the coaming 1. Correspond every stand 2's position, set up fixed column 4 on the ground of foundation ditch, every stand 2 all has a fixed column 4 to correspond with stand 2, just can support through bracing post 31 between stand 2 and the fixed column 4 that corresponds like this, avoids bounding wall 1 lodging.

When the distance between the fixed column 4 and the upright column 2 has errors due to construction defects, the angle can be adjusted by the first adjusting components 32 hinged at two ends or any end of the inclined supporting column 31. When the first adjusting component 32 is arranged at one end close to the upright 2, the inclined strut 31 is directly hinged with the fixed column 4, the position of the first adjusting component 32 at the other end on the upright 2 is adjusted, so that the angle between the inclined strut 31 and the fixed column 4 as well as the angle between the inclined strut 31 and the upright 2 are adjusted, and when the distance between the upright 2 and the fixed column 4 is fixed, the supporting force of the inclined strut 31 can be adjusted by adjusting the angle between the inclined strut 31 and the upright 2 as well as the angle between the fixed column 4.

Specifically, by adjusting the position of the sliding plate 321 on the upright column 2 and/or the fixed column 4, when the sliding plate 321 is adjusted to a required position, the sliding plate 321 can be fixed by a bolt, the sliding plate 321 is directly fixed on the corresponding position of the upright column 2 and/or the sliding plate 321, and in order to enable the sliding plate 321 to linearly slide on the upright column 2 and/or the fixed column 4, a sliding slot 34 can be formed on the upright column 2 and/or the fixed column 4, the sliding slot 34 is formed along the length direction of the fixed column 4 and/or the sliding plate 321 slides in the sliding slot 34, and for convenience, the sliding plate 321 is fixed on the upright column 2 or the fixed column 4, a limit block 331 can be placed in the sliding slot 34, when the sliding plate 321 is adjusted in place, the limit block 331 is installed, the limit block 331 is used to block the stroke of the sliding plate 321, so that the sliding plate 321 is not manually held all the time when being fixed, after the sliding plate 321 is fixed, the limiting block 331 can be removed, or the limiting block 331 can be directly left in the sliding groove 34, and is fixed and matched with the bolt, so that the sliding plate 321 is fixed in the sliding groove 34.

When the first adjusting component 32 cannot meet the adjusting requirement, the second adjusting component 35 may be disposed on the angle brace 31, and cooperates with the first adjusting component 32 to complete the angle adjustment of the angle brace 31.

The inclined supporting column 31 is adapted to the second adjusting component 35, the inclined supporting column 31 needs to be set in a sleeved mode, that is, the inclined supporting column 31 comprises an outer supporting column 311 and an inner supporting column 312, a telescopic groove 313 is formed in the outer supporting column 311, the inner supporting column 312 is inserted into the telescopic groove 313 and extends out of the telescopic groove 313, when the first adjusting component 32 is arranged at one end of the inclined supporting column 31, the first adjusting component 32 is arranged at one end of the outer supporting column 311 close to the upright column 2 or at one end of the inner supporting column 312 close to the fixed column 4, and the second adjusting component 35 is arranged at a part where the inner supporting column 312 is sleeved with the outer supporting column 311.

When the second adjusting component 35 is used, the threaded sleeve 352 arranged on the mounting plate 36 is rotated, so that the position of the threaded sleeve 352 on the screw 351 is changed, the part, which is received in the telescopic groove 313, of the inner support column 312 extends out or retracts into the telescopic groove 313 under the driving of the screw 351, the whole length of the diagonal brace 31 is increased or reduced, when the distance between the fixed column 4 and the upright column 2 is constant, the supporting force applied to the upright column 2 by the diagonal brace 31 can be increased or reduced by increasing or reducing the length of the diagonal brace 31, and therefore the supporting force applied to the upright column 2 by the diagonal brace 31 is adjusted together by matching with the first adjusting component 32, so that the adjusting effect is more accurate.

When the second adjusting component 35 is not needed to be used for adjustment, the inner supporting column 312 which should be sleeved in the telescopic groove 313 is completely accommodated in the telescopic groove 313, so that the end surface of the inner supporting column 312 which is arranged in the telescopic groove 313 is tightly abutted against the bottom of the telescopic groove 313, and the supporting force which is added to the whole inclined supporting column 31 after the first adjusting component 32 is adjusted cannot be influenced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. An inclined support foundation pit supporting system comprises a surrounding plate (1) which is attached to the inner wall of a foundation pit and arranged, wherein a plurality of stand columns (2) are uniformly distributed on one side of the surrounding plate (1) which is far away from the inner wall of the foundation pit, fixing columns (4) which are in one-to-one correspondence with the stand columns (2) are arranged on the ground of the foundation pit, and the fixing columns (4) are inserted and fixed on the ground of the foundation pit;

the method is characterized in that: the upright post (2) is connected with the fixed post (4) through an inclined strut assembly (3), the inclined strut assembly (3) comprises an inclined strut (31), a first adjusting assembly (32) is arranged at one end of the inclined strut (31) along the axial direction of the inclined strut (31), and the first adjusting assembly (32) abuts against the upright post (2) or the first adjusting assembly (32) abuts against the fixed post (4);

or two ends of the diagonal brace (31) along the axial direction of the diagonal brace (31) are respectively provided with a first adjusting component (32), the first adjusting component (32) close to the upright post (2) is abutted on the upright post (2), and the first adjusting component (32) close to the fixed post (4) is abutted on the fixed post (4);

a sliding groove (34) is formed in the upright column (2) and/or the fixing column (4), the first adjusting component (32) slides in the sliding groove (34), a plurality of fixing holes (341) are formed in the sliding groove (34), and bolts penetrate through the fixing holes (341) to fix the first adjusting component (32) in the sliding groove (34).

2. The diagonal bracing excavation supporting system of claim 1, wherein: a plurality of limiting assemblies (33) are detachably fixed in the sliding groove (34), the limiting assemblies (33) are abutted to the first limiting assemblies (33), and the positions of the first adjusting assemblies (32) in the sliding groove (34) are fixed.

3. The diagonal bracing excavation supporting system of claim 1 or 2, wherein: the first adjusting assembly (32) comprises a sliding plate (321) hinged to the inclined strut (31), the sliding plate (321) slides in the sliding groove (34), a plurality of bolt holes (322) corresponding to the fixing holes (341) are formed in the sliding plate (321), and the bolts penetrate through the bolt holes (322) to fix the sliding plate (321) in the sliding groove (34).

4. The diagonal bracing excavation supporting system of claim 3, wherein: the limiting component (33) comprises a limiting block (331), and the limiting block (331) is fixed in the sliding groove (34) and is abutted against the sliding plate (321).

5. The diagonal bracing excavation supporting system of claim 4, wherein: a plurality of accommodating grooves (332) used for accommodating the limiting blocks (331) are formed in the sliding groove (34), and the limiting blocks (331) are detachably fixed in the accommodating grooves (332) through countersunk bolts.

6. The diagonal bracing excavation supporting system of claim 5, wherein: the sliding groove (34) is arranged along the length direction of the upright post (2) and/or the fixed post (4), and the accommodating groove (332) is arranged in the sliding groove (34) in a manner of being perpendicular to the length direction of the sliding groove (34).

7. The diagonal bracing excavation supporting system of claim 1, wherein: the inclined support column (31) comprises an outer support column (311) and an inner support column (312), a telescopic groove (313) is formed in the outer support column (311), and one end of the inner support column (312) is arranged in the telescopic groove (313).

8. The diagonal bracing excavation supporting system of claim 7, wherein: outer support column (311) with be equipped with second adjusting part (35) between interior support column (312), on outer support column (311) with be equipped with one mounting panel (36) on interior support column (312) respectively, second adjusting part (35) are located between mounting panel (36) and butt mounting panel (36).

9. The diagonal bracing excavation supporting system of claim 8, wherein: the second adjusting component (35) comprises a screw rod (351) and a threaded sleeve (352) sleeved on the screw rod (351) and capable of moving on the screw rod (351) in a reciprocating mode, the screw rod (351) is arranged on one of the mounting plates (36), the threaded sleeve (352) is correspondingly arranged on the other mounting plate (36), and the threaded sleeve (352) rotates on the other mounting plate (36).

10. A construction method of an inclined support foundation pit supporting system is characterized by comprising the following steps: the method comprises the following steps:

the installation step: fixing the fixing columns (4) on the ground of the foundation pit in a one-to-one correspondence manner according to the positions of the upright columns (2) on the enclosing plate (1);

a primary adjustment step, namely adjusting the position of a sliding plate (321) abutted against the upright post (2) and/or the position of the sliding plate (321) abutted against the fixed post (4), adjusting the angle between the inclined strut and the upright post (2), and turning to a secondary adjustment step if a second adjustment mechanism is arranged on the inclined strut (31), otherwise, finishing the adjustment;

and a secondary adjusting step, namely rotating the threaded sleeve (352), and adjusting the position of the threaded sleeve (352) on the screw rod (351), so that the length of the diagonal brace (31) is adjusted, and the adjustment is finished.

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