CN211006697U

CN211006697U - Foundation pit supporting structure

Info

Publication number: CN211006697U
Application number: CN201921774955.7U
Authority: CN
Inventors: 龙绍峰; 李鹏; 张健
Original assignee: Hubei Guangyuan Geotechnical Engineering Co ltd
Current assignee: Hubei Guangyuan Geotechnical Engineering Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-14
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to a foundation ditch supporting construction relates to foundation ditch support technical field, include: at the bottom of the foundation pit, the backplate, supporting beam, retaining member and supporting component, the backplate sets up in the upper surface at the bottom of the foundation pit, the backplate is provided with a plurality ofly and the backplate is provided with slot and inserted block respectively along direction of height's both sides, the slot with inserted block shape looks adaptation, a plurality of backplates splice into an organic whole and laminate in four inside walls of foundation pit, the backplate keeps away from the one side level of foundation pit lateral wall and is provided with the crossbeam groove, crossbeam groove and supporting beam shape looks adaptation, supporting beam level embedding crossbeam inslot, and a part protrusion in the crossbeam groove of supporting beam, the retaining member is the semicircle form, and the open end joint of retaining member is in the convex part of supporting beam, the both ends of retaining member are fixed in on the backplate through screw locking, removable supporting component that is equipped with between foundation pit bottom and the backplate, supporting component compresses tightly the backplate and. The utility model discloses have and dismantle more convenient effect.

Description

Foundation pit supporting structure

Technical Field

The utility model belongs to the technical field of the excavation supporting technology and specifically relates to a excavation supporting construction is related to.

Background

At present, foundation pit supporting is a retaining, reinforcing and protecting measure adopted for the side wall of a foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit; the existing foundation pit supporting structure comprises a bottom plate fixed to the bottom of a foundation pit, a protection plate attached to and supporting the side wall of the foundation pit and a support rod installed between the bottom plate and the protection plate, wherein the protection plate is pressed on the side wall of the foundation pit through the support rod, and the side wall of the foundation pit is reinforced. After the foundation pit supporting structure is installed, the adjacent guard plates need to be welded, and the supporting effect and supporting integrity of the guard plates on the side wall of the foundation pit are improved.

But above-mentioned welding process is comparatively loaded down with trivial details, and when carrying out the dismantlement of excavation supporting construction, still need cut adjacent backplate and just can separate, and the dismantlement process is more complicated, so await improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a supporting construction of foundation ditch has and dismantles more convenient advantage.

The above object of the present invention can be achieved by the following technical solutions: a foundation pit supporting structure comprising: a foundation pit bottom, a guard plate, a supporting beam, a locking piece and a supporting component,

the guard plates are arranged on the upper surface of the foundation pit bottom, the guard plates are provided with a plurality of slots, one side of each guard plate in the height direction is provided with an insertion block, the other side of each guard plate in the height direction is provided with an insertion block, the insertion slots are matched with the insertion blocks in shape, the guard plates are spliced into a whole body to be attached to the four inner side walls of the foundation pit, two adjacent guard plates are detachably and fixedly connected through the insertion blocks,

the side, far away from the side wall of the foundation pit, of the guard plate is horizontally provided with a beam groove, the beam groove is matched with the supporting beam in shape, the supporting beam is horizontally embedded into the beam groove, part of the supporting beam protrudes out of the beam groove, the locking part is in a semi-annular shape, the open end of the locking part is clamped and connected with the protruding part of the supporting beam, two ends of the locking part are fixed on the guard plate through screws in a locking manner,

the foundation pit is characterized in that the supporting component is detachably assembled between the bottom of the foundation pit and the guard plate, and the guard plate is tightly pressed and fixed on the side wall of the foundation pit by the supporting component.

By adopting the technical scheme, compared with a common foundation pit supporting structure, the plurality of guard plates of the supporting structure are spliced together through the insert blocks, when the guard plates need to be disassembled, the insert blocks are taken out of the slots, two adjacent guard plates can be disassembled, and the disassembly is convenient; meanwhile, the cross beam groove on the guard plate provides a better mounting position for the supporting cross beam, the part of the supporting cross beam protruding out of the cross beam groove provides a better clamping position for the locking piece, and the locking piece can enable the supporting cross beam to be more stably and firmly embedded into the cross beam groove, so that the supporting cross beam is not easy to separate from the guard plate, and the stability and firmness of the supporting structure are enhanced; simultaneously, supporting component has better supporting role to the backplate, makes the backplate closely laminate on the lateral wall of foundation ditch, prevents that the backplate from taking place the condition that collapses on the lateral wall of foundation ditch, has strengthened this supporting construction's stability and fastness, and supporting component is removable, when demolising this supporting construction, dismantles more conveniently.

The utility model discloses further set up to, the supporting component is provided with the multiunit and includes: a supporting oblique beam, a sleeve, a supporting upright post, a supporting longitudinal beam, a splicing assembly and a flange assembly,

the support sloping beam is arranged between two adjacent support cross beams, the two ends of the support sloping beam are provided with first notches, the first notches protrude out of the support cross beams and are matched with the partial shapes of the slots, the two ends of the support sloping beam are fixed with the adjacent two support cross beams through first bolts, and the support sloping beam comprises: the first supporting oblique beam and the second supporting oblique beam are detachably assembled through a splicing assembly,

the support longeron sets up in relative two between the supporting beam, just the both ends of supporting the longeron all are provided with the second breach, the second breach with supporting beam protrusion in the partial shape looks adaptation of slot, the both ends of supporting the longeron and relative two all fix through the second bolt between the supporting beam, the support longeron includes: the end of the first supporting longitudinal beam far away from the supporting cross beam and the end of the second supporting longitudinal beam far away from the supporting cross beam are detachably assembled through the flange component,

first support sloping roof beam the second support sloping roof beam first support longeron the second supports the longeron and is close to all be provided with under the one end of backplate the sleeve, just telescopic open end orientation at the bottom of the foundation ditch, the support post is provided with a plurality ofly just removable the assembling in the bottom of support post is in on the foundation ditch bottom, the top of support post inserts in the sleeve, the round hole has been seted up to telescopic outer wall, the support post with the sleeve is fixed through third bolt locking.

By adopting the technical scheme, the supporting oblique beams have better supporting and abutting effects on two adjacent supporting cross beams, so that the protective plate also has supporting and abutting effects, the protective plate is more tightly attached to the inner wall of the foundation pit, the collapse is not easy to happen, and meanwhile, the supporting oblique beams are fixed on the supporting cross beams through the first bolts, so that the dismounting is convenient; the supporting oblique beam is long in length and heavy in weight, when a constructor needs to cooperate with multiple persons to disassemble the supporting structure, the supporting oblique beam is inconvenient to disassemble, the first supporting oblique beam and the second supporting oblique beam are spliced together through the splicing assembly after the supporting oblique beam is divided into the first supporting oblique beam and the second supporting oblique beam, the constructor can disassemble the supporting oblique beam in sections, and the disassembling is convenient; meanwhile, the support longitudinal beams have a better support and abutting effect on the two opposite support cross beams, so that the protection plate also has a support and abutting effect, the protection plate is more tightly attached to the inner wall of the foundation pit and is not easy to collapse, and meanwhile, the support longitudinal beams are fixed on the support cross beams through second bolts, so that the support longitudinal beams are more convenient to disassemble; the supporting longitudinal beam is long in length and heavy in weight, when a constructor needs to cooperate with multiple persons to disassemble the supporting structure, the supporting longitudinal beam is inconvenient to disassemble, the constructor can disassemble the supporting longitudinal beam in sections by splicing the first supporting longitudinal beam and the second supporting longitudinal beam together through the flange assembly after the supporting longitudinal beam is divided into the first supporting longitudinal beam and the second supporting longitudinal beam, and the disassembling is convenient; the supporting upright posts have better supporting effect on the first supporting oblique beam, the second supporting oblique beam, the first supporting longitudinal beam and the second supporting longitudinal beam, so that the supporting oblique beam and the supporting longitudinal beam have better supporting effect on the guard plate, and the structure is more stable and firm; meanwhile, the supporting upright posts are inserted into the sleeves and locked and fixed through the third bolts, and the supporting inclined beams and the supporting longitudinal beams are detachably assembled, so that the dismounting is more convenient.

The utility model discloses further set up to, the concatenation subassembly includes: an upper semi-ring, a lower semi-ring and a bolt,

go up the semi-ring with the semi-ring concatenation down is an annular and will first support sloping with two tip parcels of second support sloping, the one end of going up the semi-ring with the one end of semi-ring is articulated each other down, the other end of going up the semi-ring with the other end of semi-ring passes through the bolt is fixed down.

Through adopting above-mentioned technical scheme, when first support sloping and second support sloping need be dismantled, extract the bolt, open the back with first semi-ring, from first support sloping and second support between the tip of sloping take off last semi-ring and lower semi-ring can, it is fairly simple, convenient to dismantle the mode.

The utility model discloses further set up as, the flange subassembly includes: a first flange, a second flange and a fourth bolt,

the first flange with the second flange all is the ring form, the tip of first support girder run through in first flange, the tip that the second supported the girder run through in the second flange, first flange with the screw hole to corresponding is seted up to the second flange along the circumferencial direction in a plurality of positions, the fourth bolt run through in the screw hole, first flange with it is fixed through fourth bolt locking between the second flange.

Through adopting above-mentioned technical scheme, when first support longeron and second support longeron need be dismantled, unscrew the fourth bolt on first flange and the second flange and take out, again with first flange and second flange take off can, the dismantlement mode is simpler, convenient.

The utility model discloses further set up to, still include, the inserted bar, the upper surface at the bottom of the basic pit is provided with a plurality ofly the inserted bar, just the inserted bar protrusion in the upper surface at the bottom of the basic pit, the bottom of support post is provided with the recess, the inserted bar with recess shape looks adaptation, the support post with it is fixed through the locking of fifth bolt between the inserted bar.

Through adopting above-mentioned technical scheme, the support post passes through the inserted bar and the removable fixing of fifth bolt is on the foundation ditch bottom, when needs dismantle the support post, unscrews the fifth bolt and takes out, again with the inserted bar from the support post in can, the dismantlement mode is simpler, convenient, and the inserted bar has spacing effect to the support post, make the support post be difficult to take place to slide on the foundation ditch bottom, has strengthened this supporting construction's stability and fastness.

The utility model discloses further set up to, support the sloping with support the inside cavity of longeron, support the sloping with the inside of supporting the longeron all fills there is the support net.

Through adopting above-mentioned technical scheme, the inside of supporting the sloping and supporting the longeron has not only alleviateed the weight of supporting the sloping and supporting the longeron, and is more laborsaving in the transportation, provides the mounted position of preferred for supporting the net simultaneously, supports the net and has strengthened the structural strength who supports the sloping and supporting the longeron, makes to support the sloping and support the longeron and be difficult to take place to warp when receiving too big extrusion force between the backplate, has strengthened this supporting construction's stability and fastness.

The utility model discloses further set up to, still include, the connecting block, the position that the upper surface at the bottom of the foundation ditch is close to the foundation ditch lateral wall is provided with the connecting block, the bottom of backplate is provided with the spread groove, the spread groove with connect block shape looks adaptation.

Through adopting above-mentioned technical scheme, the backplate passes through the connecting block to be fixed at the upper surface at the bottom of the foundation ditch, makes backplate and foundation ditch bottom realize removable assembly, conveniently dismantles this supporting construction, and simultaneously, the connecting block has spacing effect to the backplate, makes the backplate be difficult to take place the position at the upper surface at the bottom of the foundation ditch and slides, has strengthened this supporting construction's stability and fastness.

The utility model discloses further set up to, the inserted block is T shape structure, insert on the top of T shape structure in the slot, adjacent two pass through between the backplate T shape structure laminates each other.

Through adopting above-mentioned technical scheme, just can the joint in the slot after inserting the slot on the top of T shape structure, make be difficult to break away from between two adjacent protecting plates, and laminate each other between two adjacent protecting plates and do not have the gap, make adjacent protecting plate be difficult to take place to break away from, strengthened the fastness of backplate.

To sum up, the utility model discloses a beneficial technological effect does:

firstly, two adjacent guard plates are spliced through the insertion block, when the guard plates need to be disassembled, the insertion block is taken out along the opening direction of the slot, the disassembly is convenient, the support assembly is detachably assembled with the foundation pit bottom and the guard plates, the guard plates can be tightly pressed and fixed on the side wall of the foundation pit, and the support assembly is detachable, so that the support structure is convenient to disassemble;

and the first supporting oblique beam and the second supporting oblique beam are connected through the splicing assembly in a detachable and fixed mode, the first supporting longitudinal beam and the second supporting longitudinal beam are connected through the flange assembly in a detachable and fixed mode, and when the supporting structure is disassembled, the supporting oblique beam and the supporting longitudinal beam can be disassembled in a segmented mode, so that the disassembling is more convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the connection between the foundation pit bottom and the supporting component;

FIG. 3 is a schematic structural view of the splicing assembly of the present invention;

fig. 4 is a schematic structural diagram of the middle flange assembly of the present invention.

Reference numerals: 1. a foundation pit bottom; 2. a guard plate; 21. a slot; 22. inserting a block; 23. a beam groove; 3. a support beam; 4. a locking member; 5. a screw; 6. a support assembly; 61. supporting the oblique beam; 611. a first support stringer; 612. a second supporting oblique beam; 613. a first notch; 62. a sleeve; 63. supporting the upright post; 64. supporting the longitudinal beam; 641. a first support stringer; 642. a second support stringer; 643. a second notch; 65. splicing the components; 651. an upper half ring; 652. a lower half ring; 653. a bolt; 66. a flange assembly; 661. a first flange; 662. a second flange; 663. a fourth bolt; 67. a first bolt; 68. a second bolt; 69. a third bolt; 7. inserting a rod; 8. a fifth bolt; 9. a support grid; 10. and (4) connecting the blocks.

Detailed Description

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

Combine figure 1 and figure 2 to show, do the utility model discloses a supporting construction of foundation ditch, include: the foundation pit comprises a foundation pit bottom 1, guard plates 2, supporting beams 3, locking parts 4 and a supporting assembly 6, wherein the foundation pit is rectangular, the guard plates 2 are arranged on the upper surface of the foundation pit bottom 1, the guard plates 2 are provided with a plurality of slots 21, one side of the guard plates 2 in the height direction is provided with an insert block 22, the other side of the guard plates 2 in the height direction is provided with an insert block 22, the slots 21 are matched with the insert block 22 in shape, the guard plates 2 are spliced into a whole and attached to four inner side walls of the foundation pit, two adjacent guard plates 2 are detachably and fixedly connected through the insert block 22, the cross section of each supporting beam 3 is rectangular, one side, far away from the side wall of the foundation pit, of each guard plate 2 is horizontally provided with a beam groove 23, each beam groove 23 is matched with the corresponding supporting beam 3 in shape, each supporting beam 3 is horizontally embedded into the corresponding beam groove 23, one part of each supporting beam 3 protrudes out of each beam groove, the both ends of retaining member 4 are fixed in on backplate 2 through 5 locking of screw, and removable the being equipped with supporting component 6 between 1 and the backplate 2 at the bottom of the foundation ditch, supporting component 6 compresses tightly backplate 2 and is fixed in the lateral wall of foundation ditch.

The support assembly 6 is provided with a plurality of sets and includes: support sloping 61, sleeve 62, support post 63, support longeron 64, concatenation subassembly 65 and flange subassembly 66, support sloping 61 and support longeron 64 and make by hollow steel pipe, support sloping 61 and set up between two adjacent supporting beam 3, the both ends of supporting sloping 61 all are provided with first breach 613, first breach 613 and supporting beam 3 protrusion in the partial shape looks adaptation of slot 21, it is fixed through first bolt 67 to support between the both ends of sloping 61 and two adjacent supporting beam 3, support sloping 61 includes: first support sloping 611 and second support sloping 612, the one end that supporting beam 3 was kept away from to first support sloping 611 and the one end that supporting beam 3 was kept away from to second support sloping 612 pass through concatenation subassembly 65 removable assembly, support longeron 64 sets up between two relative supporting beam 3, and the both ends of supporting longeron 64 all are provided with second breach 643, second breach 643 and supporting beam 3 protrusion in the partial shape looks adaptation of slot 21, all fix through second bolt 68 between the both ends of supporting longeron 64 and two relative supporting beam 3, support longeron 64 includes: first support longeron 641 and second support longeron 642, the flange subassembly 66 removable assembly is passed through to the one end that the support crossbeam 3 was kept away from to first support longeron 641 and the one end that the support crossbeam 3 was kept away from to second support longeron 642, first support sloping 611, second support sloping 612, first support longeron 641, second support longeron 642 is close to all being provided with sleeve 62 under the one end of backplate 2, and the open end of sleeve 62 is towards the foundation pit end 1, support column 63 is provided with a plurality ofly and the removable assembly of bottom of support column 63 is on the foundation pit end 1, the top of support column 63 inserts in sleeve 62, the round hole has been seted up to the outer wall of sleeve 62, support column 63 and sleeve 62 are fixed through third bolt 69 locking.

The supporting oblique beams 61 have a good supporting and abutting effect on two adjacent supporting cross beams 3, so that the protection plate 2 also has a supporting and abutting effect, the protection plate 2 is more tightly attached to the inner wall of the foundation pit, the situation of collapse is not easy to occur, meanwhile, the supporting oblique beams 61 are fixed on the supporting cross beams 3 through the first bolts 67, and the dismounting is convenient; the supporting oblique beam 61 is long in length and has large weight, when a constructor needs to cooperate with multiple persons to disassemble the supporting structure, the supporting oblique beam 61 is divided into a first supporting oblique beam 611 and a second supporting oblique beam 612, and then the first supporting oblique beam 611 and the second supporting oblique beam 612 are spliced together through the splicing assembly 65, so that the constructor can disassemble the supporting oblique beam 61 in sections, and the disassembly is convenient; meanwhile, the supporting longitudinal beams 64 have a better supporting and abutting effect on the two opposite supporting cross beams 3, so that the protection plate 2 also has a supporting and abutting effect, the protection plate 2 is more tightly attached to the inner wall of the foundation pit, the collapse is not easy to happen, and meanwhile, the supporting longitudinal beams 64 are fixed on the supporting cross beams 3 through the second bolts 68, so that the disassembly is convenient; the supporting longitudinal beam 64 is long and has a large weight, when a constructor needs to cooperate with a plurality of persons to disassemble the supporting structure, the supporting longitudinal beam 64 is divided into a first supporting longitudinal beam 641 and a second supporting longitudinal beam 642, and then the first supporting longitudinal beam 641 and the second supporting longitudinal beam 642 are spliced together through the flange assembly 66, so that the constructor can disassemble the supporting longitudinal beam 64 in sections, and the disassembly is convenient; the supporting upright post 63 has a better supporting effect on the first supporting oblique beam 611, the second supporting oblique beam 612, the first supporting longitudinal beam 641 and the second supporting longitudinal beam 642, so that the supporting oblique beam 61 and the supporting longitudinal beam 64 have a better supporting effect on the guard plate 2, and the structure is relatively stable and firm; meanwhile, the supporting upright post 63 is inserted into the sleeve 62 and locked and fixed by a third bolt 69, and is detachably assembled with the supporting oblique beam 61 and the supporting longitudinal beam 64, so that the dismounting is convenient.

The structure further comprises an inserting rod 7, wherein the upper surface of the foundation pit bottom 1 is provided with a plurality of inserting rods 7, the inserting rods 7 protrude out of the upper surface of the foundation pit bottom 1, the bottom end of the supporting upright post 63 is provided with a groove, the inserting rods 7 and the groove are matched in shape, and the supporting upright post 63 and the inserting rods 7 are locked and fixed through a fifth bolt 8. The support post 63 is detachably fixed on the bottom of the foundation pit 1 through the inserted bar 7 and the fifth bolt 8, when the support post 63 is required to be disassembled, the fifth bolt 8 is unscrewed and taken out, and then the inserted bar 7 is taken out from the support post 63, so that the disassembling mode is simpler and more convenient, the inserted bar 7 has a limiting effect on the support post 63, the support post 63 is not easy to slide on the bottom of the foundation pit 1, and the stability and the firmness of the support structure are enhanced.

The supporting oblique beams 61 and the supporting longitudinal beams 64 are hollow inside, and the supporting grids 9 are filled in the supporting oblique beams 61 and the supporting longitudinal beams 64. The weight of the supporting oblique beam 61 and the supporting longitudinal beam 64 is reduced in the supporting oblique beam 61 and the supporting longitudinal beam 64, labor is saved in the transportation process, meanwhile, a better installation position is provided for the supporting grid 9, the structural strength of the supporting oblique beam 61 and the supporting longitudinal beam 64 is enhanced by the supporting grid 9, the supporting oblique beam 61 and the supporting longitudinal beam 64 are enabled not to deform easily when the supporting oblique beam 61 and the supporting longitudinal beam 64 are subjected to overlarge extrusion force between the protection plates 2, and the stability and firmness of the supporting structure are enhanced.

The structure further comprises a connecting block 10, wherein the connecting block 10 is arranged at the position, close to the side wall of the foundation pit, of the upper surface of the foundation pit bottom 1, a connecting groove is formed in the bottom end of the protection plate 2, and the connecting groove is matched with the connecting block 10 in shape. Backplate 2 passes through connecting block 10 to be fixed at the upper surface at the bottom of the foundation pit 1, makes backplate 2 and foundation pit 1 realize removable assembly, conveniently dismantles this supporting construction, and simultaneously, connecting block 10 has spacing effect to backplate 2, makes backplate 2 be difficult to take place the position at the upper surface at the bottom of the foundation pit 1 and slides, has strengthened this supporting construction's stability and fastness.

The insert block 22 is a T-shaped structure, the top end of the T-shaped structure is inserted into the slot 21, and two adjacent guard plates 2 are attached to each other through the T-shaped structure. Just can the joint in slot 21 after slot 21 is inserted to the top of T shape structure, make be difficult to break away from between two adjacent backplate 2, and laminate each other between two adjacent backplate 2 and do not have the gap, make adjacent backplate 2 be difficult to take place to break away from, strengthened backplate 2's fastness.

As shown in fig. 1 and 3, the splice assembly 65 includes: the supporting inclined beam assembly comprises an upper half ring 651, a lower half ring 652 and a pin 653, wherein the upper half ring 651 and the lower half ring 652 are spliced into a ring shape and wrap two ends of a first supporting inclined beam 611 and a second supporting inclined beam 612, one end of the upper half ring 651 and one end of the lower half ring 652 are hinged with each other, and the other end of the upper half ring 651 and the other end of the lower half ring 652 are fixed through the pin 653. When the first supporting inclined beam 611 and the second supporting inclined beam 612 need to be disassembled, the pin 653 is pulled out, the upper half ring 651 is opened, and then the upper half ring 651 and the lower half ring 652 are taken down from the position between the ends of the first supporting inclined beam 611 and the second supporting inclined beam 612, so that the disassembling mode is simple and convenient.

As shown in connection with fig. 1 and 4, the flange assembly 66 includes: the end part of the first supporting longitudinal beam 641 penetrates through the first flange 661, the end part of the second supporting longitudinal beam 642 penetrates through the second flange 662, a plurality of threaded holes corresponding to each other are formed in the first flange 661 and the second flange 662 in the circumferential direction, the fourth bolt 663 penetrates through the threaded holes, and the first flange 661 and the second flange 662 are locked and fixed through the fourth bolt 663. When the first support longitudinal beam 641 and the second support longitudinal beam 642 need to be disassembled, the fourth bolts 663 on the first flange 661 and the second flange 662 are loosened and taken out, and then the first flange 661 and the second flange 662 are taken down, so that the disassembling mode is simple and convenient.

The implementation principle of the embodiment is as follows: compared with a common foundation pit supporting structure, the plurality of protection plates 2 of the supporting structure are spliced together through the insertion blocks 22, when the protection plates 2 need to be disassembled, the insertion blocks 22 are taken out of the slots 21, two adjacent protection plates 2 can be disassembled, and the disassembly is convenient; meanwhile, the cross beam groove 23 on the guard plate 2 provides a better mounting position for the supporting cross beam 3, the part of the supporting cross beam 3 protruding out of the cross beam groove 23 provides a better clamping position for the locking piece 4, and the locking piece 4 can enable the supporting cross beam 3 to be more stably and firmly embedded into the cross beam groove 23, so that the supporting cross beam 3 is not easy to separate from the guard plate 2, and the stability and firmness of the supporting structure are enhanced; simultaneously, supporting component 6 has better supporting role to backplate 2, makes backplate 2 laminate in the lateral wall of foundation ditch more closely, prevents that backplate 2 from taking place the condition that collapses on the lateral wall of foundation ditch, has strengthened this supporting construction's stability and fastness, and supporting component 6 is removable, when demolising this supporting construction, dismantles more conveniently.

Claims

1. A foundation pit supporting structure, comprising: a foundation pit bottom (1), a guard plate (2), a supporting beam (3), a locking piece (4) and a supporting component (6),

the protective plates (2) are arranged on the upper surface of the foundation pit bottom (1), the protective plates (2) are provided with a plurality of protective plates, one side of each protective plate (2) along the height direction is provided with a slot (21), the other side of each protective plate (2) along the height direction is provided with an insert block (22), the slots (21) are matched with the insert blocks (22) in shape, the plurality of protective plates (2) are spliced into a whole and attached to four inner side walls of a foundation pit, two adjacent protective plates (2) are detachably and fixedly connected through the insert blocks (22),

the one side level that foundation ditch lateral wall was kept away from to backplate (2) is provided with crossbeam groove (23), crossbeam groove (23) with supporting beam (3) shape looks adaptation, supporting beam (3) level embedding in crossbeam groove (23), just a part protrusion in crossbeam groove (23) of supporting beam (3), retaining member (4) are the semicircle form, just the open end joint of retaining member (4) in the convex part of supporting beam (3), the both ends of retaining member (4) are fixed in through screw (5) locking on backplate (2),

the foundation pit is characterized in that the supporting component (6) is detachably arranged between the foundation pit bottom (1) and the protection plate (2), and the protection plate (2) is pressed and fixed on the side wall of the foundation pit by the supporting component (6).

2. The foundation pit supporting construction according to claim 1, characterized in that the support assembly (6) is provided with a plurality of groups and comprises: a supporting oblique beam (61), a sleeve (62), a supporting upright post (63), a supporting longitudinal beam (64), a splicing component (65) and a flange component (66),

the support sloping beam (61) sets up in adjacent two between the supporting beam (3), the both ends of supporting sloping beam (61) all are provided with first breach (613), first breach (613) with supporting beam (3) protrusion in the partial shape looks adaptation of slot (21), the both ends of supporting sloping beam (61) and adjacent two all fix through first bolt (67) between supporting beam (3), support sloping beam (61) includes: a first supporting oblique beam (611) and a second supporting oblique beam (612), wherein one end of the first supporting oblique beam (611) far away from the supporting cross beam (3) and one end of the second supporting oblique beam (612) far away from the supporting cross beam (3) are detachably assembled through a splicing component (65),

the supporting longitudinal beam (64) is arranged between the two opposite supporting transverse beams (3), two ends of the supporting longitudinal beam (64) are respectively provided with a second notch (643), the second notches (643) are matched with the partial shapes of the supporting transverse beams (3) protruding out of the insertion grooves (21), two ends of the supporting longitudinal beam (64) are fixed with the two opposite supporting transverse beams (3) through second bolts (68), and the supporting longitudinal beam (64) comprises: a first support longitudinal beam (641) and a second support longitudinal beam (642), wherein one end of the first support longitudinal beam (641) far away from the support cross beam (3) and one end of the second support longitudinal beam (642) far away from the support cross beam (3) are detachably assembled through the flange assembly (66),

first support sloping (611), second support sloping (612), first support longeron (641), second support longeron (642) are close to all be provided with under the one end of backplate (2) sleeve (62), just the open end orientation of sleeve (62) at the bottom of the basic pit (1), support stand (63) be provided with a plurality ofly just the bottom of support stand (63) is removable assemble in on the bottom of the basic pit (1), insert the top of support stand (63) in sleeve (62), the round hole has been seted up to the outer wall of sleeve (62), support stand (63) with sleeve (62) are fixed through third bolt (69) locking.

3. The excavation supporting structure of claim 2, wherein the splice assembly (65) comprises: an upper half ring (651), a lower half ring (652) and a plug pin (653),

the upper half ring (651) and the lower half ring (652) are spliced into a ring shape, two end parts of the first supporting inclined beam (611) and the second supporting inclined beam (612) are wrapped, one end of the upper half ring (651) and one end of the lower half ring (652) are hinged to each other, and the other end of the upper half ring (651) and the other end of the lower half ring (652) are fixed through the bolt (653).

4. The excavation supporting structure of claim 2, wherein the flange assembly (66) includes: a first flange (661), a second flange (662) and a fourth bolt (663),

first flange (661) with second flange (662) all are the ring form, the tip of first support longeron (641) run through in first flange (661), the tip of second support longeron (642) run through in second flange (662), a plurality of positions are seted up along the circumferencial direction to corresponding screw hole first flange (661) with second flange (662), fourth bolt (663) run through in the screw hole, first flange (661) with it is fixed to lock through fourth bolt (663) between second flange (662).

5. The excavation supporting structure of claim 2, further comprising: inserted bar (7), the upper surface at the bottom of the basic pit (1) is provided with a plurality ofly inserted bar (7), just inserted bar (7) protrusion in the upper surface at the bottom of the basic pit (1), the bottom of support post (63) is provided with the recess, inserted bar (7) with recess shape looks adaptation, support post (63) with it is fixed through fifth bolt (8) locking between inserted bar (7).

6. Pit support structure according to claim 2, characterized in that the supporting stringers (61) and the supporting stringers (64) are hollow on the inside, and the supporting meshes (9) are filled in the inside of both the supporting stringers (61) and the supporting stringers (64).

7. The foundation pit supporting structure according to claim 1, further comprising a connecting block (10), wherein the connecting block (10) is arranged on the upper surface of the foundation pit bottom (1) close to the side wall of the foundation pit, a connecting groove is arranged at the bottom end of the protection plate (2), and the connecting groove and the connecting block (10) are matched in shape.

8. The foundation pit supporting structure according to claim 1, wherein the insert block (22) is a T-shaped structure, the top end of the T-shaped structure is inserted into the slot (21), and two adjacent guard plates (2) are attached to each other through the T-shaped structure.