CN113605400A

CN113605400A - Building foundation pit supporting structure

Info

Publication number: CN113605400A
Application number: CN202110823084.9A
Authority: CN
Inventors: 谢友林
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-11-05

Abstract

The application provides a building foundation ditch bearing structure, include: the supporting plates are provided with four supporting frames which are arranged on the inner wall of the foundation pit and are encircled into a supporting frame, and the top of each supporting plate is provided with a pit edge protecting plate vertical to the supporting plate; the fixing unit is arranged on one side of the pit edge protection plate far away from the supporting plate; the top opening unit is used for connecting adjacent pit edge protection plates; the bottom of the supporting plate is connected with the additional plate through the mounting unit; and the adjacent supporting plates are connected through the corner supporting units. When digging the construction under in the foundation ditch, can down install the additional board of supporting usefulness additional on the basis of not dismantling original bearing structure, need not arrange supporting mechanism again, reduce the risk that the foundation ditch sinks to the bracing piece that does not rely on a large amount of slopes in inside supports the foundation ditch lateral wall, can reserve great construction space for the foundation ditch, avoids influencing the construction in the foundation ditch.

Description

Building foundation pit supporting structure

Technical Field

The application relates to the field of foundation pit support, in particular to a building foundation pit supporting structure.

Background

The building foundation pit is one of main construction projects during building construction, and the common problem of the building foundation pit is that except drainage, the main thing is the foundation pit slope problem of collapsing. Generally, aiming at side slope collapse, a prefabricated template is usually adopted to cover the side slope, then the foundation pit is prevented from collapsing, and part of the prefabricated template is protected by adopting backfill to be matched with a vertically installed template;

the patent with the application number of 201920092454.4 in the prior art provides a building foundation pit supporting structure, which comprises a strut arranged in a foundation pit, wherein the lower end of the strut is provided with a conical head, the strut is provided with two plate grooves, the plate grooves are provided with baffles, and backfill soil layers are filled between a side slope of the foundation pit and the strut and the baffles;

although it can realize protecting the foundation ditch side slope, avoid collapsing, then in-service use, constructor still can continue to dig the construction down in the foundation ditch, then the bearing structure of upside originally relied on the foundation ditch ground move down, bearing structure need reset, still have the risk of collapsing when resetting, and current bearing structure's atress mechanism relies on the bracing piece in the foundation ditch to provide the holding power, the bracing piece of these slopes occupies the space of foundation ditch, influence the construction in the foundation ditch.

Disclosure of Invention

The application provides a building foundation ditch bearing structure, when digging the construction under in the foundation ditch, can be on the basis of not dismantling original bearing structure can down install additional plate of support usefulness additional, need not rearrange supporting mechanism, reduce the risk that the foundation ditch sinks, and do not rely on the bracing piece of inside a large amount of slopes to support the foundation ditch lateral wall, can reserve great construction space for the foundation ditch, avoid influencing the construction in the foundation ditch, in order to improve above-mentioned problem.

The invention is particularly such that:

a building foundation pit support structure comprising:

the supporting plates are provided with four supporting frames which are arranged on the inner wall of the foundation pit and are encircled into a supporting frame, and the top of each supporting plate is provided with a pit edge protecting plate vertical to the supporting plate;

the fixing unit is arranged on one side of the pit edge protection plate far away from the supporting plate;

the top opening unit is used for connecting adjacent pit edge protection plates;

the bottom of the supporting plate is connected with the additional plate through the mounting unit;

and the adjacent supporting plates are connected through the corner supporting units.

The lateral wall at the foundation ditch is hugged closely to the backup pad, a lateral wall for placing the foundation ditch collapses, can cover the top border of post foundation ditch through hole limit protection shield, can fix hole limit protection shield subaerially above the foundation ditch through fixed unit, thereby preliminary fixed support board, can be with the side reciprocal anchorage of adjacent backup pad through edges and corners supporting element, thereby can enclose into a stable square carriage, support around the foundation ditch, the top struts the unit and can strut adjacent hole limit protection shield, avoid the backup pad to receive the too big and mutual extrusion of pressure of earthwork, influence the shape of square carriage, the installation element can be with installing board fixed mounting in the bottom of backup pad additional, in the time of can digging construction under the foundation ditch, can make things convenient for the foundation ditch to add supporting component when becoming dark, need not arrange supporting mechanism again.

Furthermore, the fixed unit includes anchor subassembly and reinforcement subassembly, the anchor subassembly is installed to the one side that the backup pad was kept away from to hole limit protection board, install reinforcement subassembly on the anchor subassembly. The pit edge protection plate is conveniently fixed on the ground above the foundation pit through the anchoring assembly, the anchoring effect of the anchoring assembly can be increased through the reinforcing assembly, and the anchoring assembly is prevented from being pulled out or from displacing in a soil layer.

Further, the anchor subassembly includes dead lever, solid fixed ring, spacing cylinder, stock and ground thorn, the hole limit protection shield is kept away from one side of backup pad and is fixed with solid fixed ring through the dead lever, the anchor rod has been alternate in the solid fixed ring, the top of stock is connected with spacing cylinder, and the bottom of stock is equipped with ground thorn. In making things convenient for the inserting soil layer of stock through ground thorn, spacing cylinder can restrict solid fixed ring, avoids solid fixed ring to drop from the top of stock to pound spacing cylinder through the hammer and also make things convenient for the stock to impress in the soil layer.

Further, it includes circular slot, interior hexagonal piece, control screw, control nut, side channel, vaulting pole, arc movable block and inserted bar to consolidate the subassembly, the inside upside of stock is equipped with the columniform installation cavity, the circular slot has been seted up at spacing cylindrical top, spacing cylindrical bottom center is rotated and is connected with control screw, control screw's top is located the circular slot and is connected with interior hexagonal piece, control screw's bottom extends to in the installation cavity and threaded connection control nut, the one end of two vaulting poles of control nut's both sides difference swing joint, the side channel of intercommunication installation cavity is seted up to the both sides of stock, the bottom of installation cavity is through two inserted bars that correspond the side channel of arc movable block swing joint, the other end of two vaulting poles respectively the middle part of two inserted bars of swing joint.

When needs are consolidated, hexagonal piece in construction hexagonal post instrument wrench movement to drive control screw clockwise rotation, thereby can make control nut move down on control screw, thereby prop the inserted bar to both sides through the vaulting pole and open, the inserted bar passes the side channel, inserts in the soil layer of stock side, the area of contact of increase and soil layer, thereby makes the stock fixed firm in the soil layer, increases the anchor effort of anchor subassembly.

Further, the top struts the unit and includes erection column, fore-set, a movable section of thick bamboo, interior screw rod, mount pad, an internal thread section of thick bamboo, swivel ring and pull rod, and the tip of adjacent hole limit protection shield all is fixed with the fore-set through the erection column, equal activity has cup jointed a movable section of thick bamboo on the fore-set, and the one end of interior screw rod is connected to a movable section of thick bamboo side that two hole limit protection shields are close, and just another movable section of thick bamboo side that two hole limit protection shields are close rotates the one end of connecting an internal thread section of thick bamboo through the mount pad, the other end of an internal thread section of thick bamboo and the other end threaded connection of interior screw rod, the fixed swivel ring that has cup jointed in side of an internal thread section of thick bamboo, the side of swivel ring is equipped with the pull rod.

The turning ring can be conveniently pulled through the pulling rod, the turning ring can drive the internal thread cylinder to rotate relative to the mounting seat, due to the thread effect, the internal thread rod is screwed into the internal thread cylinder or stretches out the internal thread cylinder, the internal thread rod stretches out the internal thread cylinder to enable two adjacent pit edge protection plates to be unfolded, and the phenomenon that the pressure of the earthwork of the side wall of the foundation pit to the supporting plates is too large to influence the shape formed by the surrounding of the four supporting plates is avoided.

Further, the installation unit includes coupling assembling and presses the subassembly, coupling assembling is passed through with the top of installing the board additional to the bottom of backup pad and is connected, and the side-mounting of backup pad has to install the fixed subassembly of pressing of board additional. Install additional the board through coupling assembling is convenient additional, can press fixed additional the board through pressing the subassembly, avoid the earthwork of foundation ditch lower floor to installing the board additional and have great pressure.

Further, coupling assembling includes connecting strip and spread groove, the spread groove has been seted up respectively to the bottom of backup pad and the bottom of installing the board additional, the top of installing the board additional is equipped with the connecting strip, connecting strip and spread groove cooperation joint. Through connecting strip and spread groove cooperation, can add the dress board in backup pad below joint, and the downside that adds the dress board can continue to add another dress board of joint, and the continuation of adaptation foundation ditch is dug down, need not lay bearing structure again, only needs to install the installation unit additional and install the board additional.

Further, the pressing assembly comprises a pull ring, a limiting frame, a connecting square rod and a square groove block, the side face of the bottom of the supporting plate is fixed with the limiting frame, the limiting frame is internally provided with the connecting square rod in an up-and-down sliding connection mode, the pull ring is connected with the top of the connecting square rod, the position of the top side of the installing plate corresponding to the connecting square rod is fixed with the square groove block, and the bottom end of the connecting square rod is connected with the square groove block in a matched and clamped mode. Through the cooperation of connecting square pole and square groove piece, can fix the backup pad at the coplanar with installing the board additional, avoid installing the board additional and receive the pressure of foundation ditch bottom side and take place the slope for the backup pad.

Further, coupling assembling includes connecting rod one, bearing one, connecting bolt, coupling nut and connecting rod two, the bottom side of backup pad is fixed with connecting rod one, the tip of connecting rod one has connecting bolt's top through a rotation connection of bearing, the position that corresponds connecting rod one in the top side of install additional board is fixed with connecting rod two, the end fixing of connecting rod two has the coupling nut who corresponds from top to bottom with connecting bolt, coupling nut and connecting bolt's bottom threaded connection. Through rotating connecting bolt, can make connecting bolt and coupling nut threaded connection, can will install the board additional and fix the bottom in the backup pad, this kind of connected mode is reliable and stable.

Further, press the subassembly to include vertical pole, screw rod sliding seat, lever bolt, lever nut, sliding seat, middle part pole, depression bar, hinged-support and pressure disk, the bottom side of backup pad is fixed with the vertical pole, the middle part of the tip swing joint middle part pole of vertical pole, the top swing joint sliding seat of middle part pole, the top of sliding seat is fixed with lever nut, lever nut female connection lever bolt, the connecting screw rod sliding seat is rotated to the rear end of lever bolt, the backup pad side is located the position swing joint screw rod sliding seat of vertical pole top, the depression bar is connected to the bottom rear side of middle part pole, the one end that the depression bar is close to the backup pad is passed through hinged-support swing joint pressure disk. The lever bolt is twisted, so that the lever nut moves towards the front end of the lever bolt, the middle rod is driven to move clockwise relative to the end part of the longitudinal rod, the pressing rod moves towards the supporting plate, the pressing plate presses to the side face of the supporting plate, the side face of the supporting plate is pressed close to the pressing plate all the time through the hinged support, and the pressing force of the middle rod is improved through the lever effect of the middle rod.

The invention has the beneficial effects that:

1. the lateral wall at the foundation ditch is hugged closely to the backup pad for the lateral wall of placing the foundation ditch collapses, can cover the top border of post foundation ditch through hole limit protection shield, can fix hole limit protection shield on ground above the foundation ditch through fixed unit, thereby preliminary fixed support board can be with the side reciprocal anchorage of adjacent backup pad through edges and corners supporting element, thereby can enclose into a stable square carriage, supports and is in the foundation ditch all around, supports

2. The top struts the unit and can struts adjacent hole limit protection shield, avoids the backup pad to receive the too big and mutual extrusion of pressure of earthwork, influences the shape of square carriage, and the installation element can be with installing board fixed mounting in the bottom of backup pad additional, and when can dig the construction under in the foundation ditch, add supporting component when can make things convenient for the foundation ditch deepening.

3. When digging the construction under in the foundation ditch, can down install the additional board of supporting usefulness additional on the basis of not dismantling original bearing structure, need not arrange supporting mechanism again, reduce the risk that the foundation ditch sinks to the bracing piece that does not rely on a large amount of slopes in inside supports the foundation ditch lateral wall, can reserve great construction space for the foundation ditch, avoids influencing the construction in the foundation ditch.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a support structure for a foundation pit of a building provided in the present application;

fig. 2 is a partially enlarged structural schematic view of a portion a in fig. 1 of a support structure of a foundation pit of a building provided by the present application;

fig. 3 is a partial enlarged structural view of a support structure of a foundation pit of a building provided by the present application at B in fig. 1;

fig. 4 is a schematic side view of a support structure for a foundation pit of a building according to the present invention;

fig. 5 is a partial enlarged structural view of a support structure of a foundation pit of a building provided by the present application at C;

fig. 6 is a schematic partial sectional structure view of a fixing unit of a supporting structure of a foundation pit of a building according to the present invention;

fig. 7 is a schematic back structure view of a building foundation pit support structure provided by the present application.

Icon: 1 supporting plate, 2 fixing units, 21 fixing rods, 22 fixing rings, 23 limiting cylinders, 24 anchor rods, 25 circular grooves, 26 internal hexagonal blocks, 27 control screws, 28 control nuts, 29 side grooves, 210 supporting rods, 211 arc-shaped movable blocks, 212 insertion rods, 213 ground thorns, 3 top expanding units, 31 mounting columns, 32 top columns, 33 movable cylinders, 34 internal screws, 35 mounting seats, 36 internal screw cylinders, 37 rotating rings, 38 pull rods, 4 middle expanding units, 41 expanding mounting blocks, 42 expanding rotary cylinders, 43 expanding rods, 44 clamping blocks, 45 clamping seats, 5 mounting units, 51 connecting rods I, 52 bearing I, 53 connecting bolts, 54 connecting nuts, 55 connecting rods II, 56 connecting strips, 57 connecting grooves, 58 pull rings, 59 limiting frames, 510 connecting square rods, 511 square groove blocks, 512 longitudinal rods, 513 screw rod movable seats, 514 lever bolts, 515 lever nuts, movable seats, 517 middle rods, 518 pressing rods, 519 hinged support, 520 platen, 6 infiltration processing unit, 61 arc breakwater, 62 water holes, 63 water catch bowl, 64 drain pipes, 65 water valve, 7 edges and corners support unit, 71 right-angle board, 72 side post, 73 backup pad end holes, 74 additional board end holes, 8 hole limit protection boards, 9 additional boards.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

in the first embodiment, please refer to fig. 1-3 and fig. 6, the present embodiment provides a technical solution: a building foundation pit support structure comprising:

the supporting plates 1 are provided with four supporting frames which are arranged on the inner wall of the foundation pit and are encircled into a supporting frame, and the top of each supporting plate 1 is provided with a pit edge protecting plate 8 which is vertical to the supporting plate 1;

the fixing unit 2 is arranged on one side of the pit edge protection plate 8 far away from the support plate 1;

the fixed unit includes anchor subassembly and reinforcement assembly, and the anchor subassembly is installed to the one side that backup pad 1 was kept away from to hole limit protection board 8, installs reinforcement assembly on the anchor subassembly. The pit edge protection plate 8 is conveniently fixed on the ground above the foundation pit through the anchoring assembly, the anchoring effect of the anchoring assembly can be increased through the reinforcing assembly, and the anchoring assembly is prevented from being pulled out or from displacing in a soil layer.

The anchor subassembly includes dead lever 21, solid fixed ring 22, spacing cylinder 23, stock 24 and ground thorn 213, and one side that backup pad 1 was kept away from to hole limit protection board 8 is fixed with solid fixed ring 22 through dead lever 21, and solid fixed ring 22 is interior to alternate has stock 24, and the top of stock 24 is connected with spacing cylinder 23, and the bottom of stock 24 is equipped with ground thorn 213. In making things convenient for the inserting soil layer of stock 24 through ground thorn 213, spacing cylinder 23 can restrict solid fixed ring 22, avoids solid fixed ring 22 to drop from the top of stock 24 to pound spacing cylinder 23 through the hammer and also conveniently impress stock 24 in the soil layer.

Consolidate the subassembly and include circular slot 25, hexagon socket head 26, control screw 27, control nut 28, side channel 29, vaulting pole 210, arc movable block 211 and inserted bar 212, the inside upside of stock 24 is equipped with the columniform installation cavity, circular slot 25 has been seted up at limit cylinder 23's top, limit cylinder 23's bottom center is rotated and is connected with control screw 27, control screw 27's top is located circular slot 25 and is connected with hexagon socket head 26, control screw 27's bottom extends to in the installation cavity and threaded connection control nut 28, the one end of two vaulting poles 210 of two swing joint respectively in control nut's 28 both sides, the side channel 29 of intercommunication installation cavity is seted up to stock 24's both sides, the inserted bar 212 of two corresponding side channels 29 of arc movable block 211 swing joint is passed through to the bottom in installation cavity, the middle part of two inserted bar 212 of other end difference swing joint of two vaulting poles 210.

When needing to consolidate, hexagonal piece 26 in the construction hexagonal post instrument wrench movement to drive control screw 27 clockwise turning, thereby can make control nut 28 move up and down at control screw 27, thereby prop open inserted bar 212 to both sides through vaulting pole 210, inserted bar 212 passes side channel 29, inserts in the soil layer of stock 24 side, the area of contact of increase and soil layer, thereby make the stock 24 fixed firm in the soil layer, increase the anchor effort of anchor subassembly.

The top opening unit 3 is used for connecting adjacent pit edge protection plates 8 through the top opening unit 3;

the top opening unit 3 comprises an installation column 31, a top column 32, a movable barrel 33, an internal screw 34, an installation seat 35, an internal screw barrel 36, a rotating ring 37 and a trigger lever 38, the end parts of adjacent pit edge protection plates 8 are all fixed with the top column 32 through the installation column 31, the movable barrel 33 is movably sleeved on the top column 32, one end of the internal screw 34 is connected to the side surface of one movable barrel 33 close to two pit edge protection plates 8, the side surface of the other movable barrel 33 close to the two pit edge protection plates 8 is rotatably connected with one end of the internal screw barrel 36 through the installation seat 35, the other end of the internal screw barrel 36 is in threaded connection with the other end of the internal screw 34, the rotating ring 37 is fixedly sleeved on the side surface of the internal screw barrel 36, and the trigger lever 38 is arranged on the side surface of the rotating ring 37.

Can conveniently pull swivel ring 37 through spanner 38, swivel ring 37 rotates and can drive an internal thread section of thick bamboo 36 and rotate for mount pad 35, because the screw action, makes in internal screw 34 spiral enters internal thread section of thick bamboo 36 or stretches out internal thread section of thick bamboo 36, and internal screw 34 stretches out internal thread section of thick bamboo 36 and makes and can make two adjacent hole limit protection boards 8 strut, avoids the earthwork of foundation ditch lateral wall to the too big shape that influences that four backup pads 1 enclose of pressure of backup pad 1.

The bottom of the supporting plate 1 is connected with an additional plate 9 through the mounting unit 5;

installation unit 5 includes coupling assembling and presses the subassembly, and coupling assembling is passed through with the top of installing board 9 additional to the bottom of backup pad 1 and is connected, and the side-mounting of backup pad 1 has to install the fixed subassembly of pressing of board 9 additional. Install additional plate 9 through coupling assembling conveniently, can press fixed plate 9 of installing additional through pressing the subassembly, avoid the earthwork of foundation ditch lower floor to installing additional plate 9 and have great pressure.

Coupling assembling includes connecting strip 56 and spread groove 57, and spread groove 57 has been seted up respectively to the bottom of backup pad 1 and the bottom of installing board 9 additional, and the top of installing board 9 additional is equipped with connecting strip 56, connecting strip 56 and spread groove 57 cooperation joint. Through connecting strip 56 and spread groove 57 cooperation, can add dress board 9 in backup pad 1 below joint, and the downside that installs board 9 additional can continue to add another dress board 9 of joint, adapts to digging under the continuation of foundation ditch, need not lay bearing structure again, only needs install installation unit 5 additional and install board 9 additional.

The pressing assembly comprises a pull ring 58, a limiting frame 59, a connecting square rod 510 and a square groove block 511, the bottom side face of the supporting plate 1 is fixed with the limiting frame 59, the limiting frame 59 is internally provided with the connecting square rod 510 in a vertical sliding connection mode, the pull ring 58 is connected with the top of the connecting square rod 510, the top side face of the additional installation plate 9 is fixed with the square groove block 511 in a position corresponding to the connecting square rod 510, and the bottom end of the connecting square rod 510 is connected with the square groove block 511 in a matched and clamped mode. Through the cooperation of connecting square pole 510 and square groove piece 511, can fix backup pad 1 and install board 9 additional at the coplanar, avoid installing board 9 additional and receive the pressure of foundation ditch bottom side and take place the slope for backup pad 1.

And the corner supporting units 7 are connected between the adjacent supporting plates 1 through the corner supporting units 7. Corner support element 7 includes right-angle plate 71, the side post 72, backup pad end hole 73, install board end hole 74 additional, backup pad end hole 73 has been seted up respectively to the lower extreme on the side of backup pad 1, and install the side middle part of board 9 additional and also seted up and install board end hole 74 additional, the both sides of right-angle plate 71 are connected with side post 72 respectively, the side post 72 of right-angle plate 71 side inserts the backup pad end hole 73 of adjacent backup pad 1 side respectively, adjacent install board 9 additional in addition also through right-angle plate 71 and side post 72 connection, the side post 72 of right-angle plate 71 side inserts adjacent install board 9 additional side install board end hole 74 additional, can consolidate adjacent backup pad 1 and adjacent install board 9 side additional through right-angle plate 71 and support, ensure the stability of backup pad 1 and the square frame that installs board 9 additional and enclose.

The supporting plate 1 is tightly attached to the side wall of the foundation pit and used for placing the side wall of the foundation pit to collapse, the top edge of the column foundation pit can be covered by the pit edge protecting plate 8, the pit edge protecting plate 8 can be fixed on the ground above the foundation pit by the fixing unit 2, thereby preliminarily fixing the supporting plates 1, fixing the side edges of the adjacent supporting plates 1 to each other by the corner supporting units 7, thereby a stable square supporting frame can be enclosed and supported around the foundation pit, the top opening unit 3 can open the adjacent pit edge protecting plate 8 to avoid the supporting plate 1 from being extruded mutually due to overlarge pressure of the earth so as to influence the shape of the square supporting frame, the mounting unit 5 can fixedly mount the additional plate 9 at the bottom of the supporting plate 1, when the foundation pit is dug, the supporting component can be conveniently added when the foundation pit becomes deep, and the supporting mechanism does not need to be rearranged.

In the second embodiment, referring to fig. 1-3, the present embodiment provides a technical solution: the supporting structure of the building foundation pit is the same as the structure of the embodiment, and is characterized in that the connecting component and the pressing component are different,

coupling assembling includes connecting rod 51, bearing 52, connecting bolt 53, coupling nut 54 and connecting rod two 55, the bottom side of backup pad 1 is fixed with connecting rod 51, the tip of connecting rod 51 rotates through bearing 52 and is connected with connecting bolt 53's top, the top side that installs board 9 additional corresponds the rigidity of connecting rod 51 and is equipped with connecting rod two 55, the end fixing of connecting rod two 55 has coupling nut 54 who corresponds from top to bottom with connecting bolt 53, coupling nut 54 and connecting bolt 53's bottom threaded connection. By rotating the connecting bolt 53, the connecting bolt 53 can be in threaded connection with the connecting nut 54, the additional mounting plate 9 can be fixed at the bottom of the supporting plate 1, and the connecting mode is stable and reliable.

The pressing component comprises a longitudinal rod 512, a screw rod movable seat 513, a lever bolt 514, a lever nut 515, a movable seat 516, a middle rod 517, a pressing rod 518, a hinged support 519 and a pressing plate 520, wherein the longitudinal rod 512 is fixed on the side surface of the bottom of the supporting plate 1, the end part of the longitudinal rod 512 is movably connected with the middle part of the middle rod 517, the top part of the middle rod 517 is movably connected with the movable seat 516, the lever nut 515 is fixed on the top part of the movable seat 516, the lever nut 515 is connected with the lever bolt 514 in a threaded manner, the rear end of the lever bolt 514 is rotatably connected with the screw rod movable seat 513, the position, above the longitudinal rod 512, on the side surface of the supporting plate 1 is movably connected with the screw rod movable seat 513, the rear side of the bottom part of the middle rod 517 is connected with the pressing rod 518, and one end, close to the supporting plate 1, of the pressing rod 518 is movably connected with the pressing plate 520 through the hinged support 519. The lever bolt 514 is twisted to make the lever nut 515 move to the front end on the lever bolt 514, thereby driving the middle rod 517 to move clockwise relative to the end of the longitudinal rod 512, thereby making the pressure rod 518 move towards the support plate 1, making the pressure plate 520 press to the side of the support plate 1 through the hinged support 519, and improving the pressing force to the support plate 1 through the lever action of the middle rod 517.

In the third embodiment, referring to fig. 1, the present embodiment provides a technical solution: the utility model provides a building foundation ditch bearing structure, this embodiment is roughly the same with the above embodiment structure, the difference lies in: still include middle part strut unit 4, middle part strut unit 4 includes struts installation piece 41, strut rotary drum 42, strut pole 43, fixture block 44, cassette 45, the side of backup pad 1 is fixed with struts installation piece 41, strut movable vertical axis swing joint on installation piece 41 and strut rotary drum 42, the one end of strut pole 43 is connected to the side of strut rotary drum 42, fixture block 44 is connected to the other end of strut pole 43, adjacent another backup pad 1 is close to the position equidistance of strutting installation piece 41 and is equipped with cassette 45, the fixture block 44 joint of strut pole 43 tip is to corresponding cassette 45 in, can move relative to strut installation piece 41 through strut pole 43, make fixture block 44 block card go into suitable cassette 45, strut two adjacent backup pads 1 through the holding power of strut pole 43, avoid the lateral wall of foundation ditch to the pressure of backup pad 1 too big and the side of crushing backup pad 1, avoid the side atress of backup pad 1 to warp, meanwhile, the supporting force is mutually supported, the vertical support of the supporting plate 1 to the side wall of the foundation pit by adopting a large-angle supporting rod is avoided, a larger space in the foundation pit is ensured, and the construction in the foundation pit is facilitated.

In a fourth embodiment, referring to fig. 1, fig. 4-5 and fig. 7, the present embodiment provides a technical solution: the utility model provides a building foundation ditch bearing structure, this embodiment is roughly the same with the above embodiment structure, the difference lies in: the water seepage device also comprises a water seepage processing unit 6, the water seepage processing unit 6 comprises an arc-shaped water baffle 61, a water hole 62, a water collecting tank 63, a drain pipe 64 and a water valve 65, the bottom of the outer side of the additional installation plate 9 is fixed with the arc-shaped water baffle 61, and the additionally-installed plate 9 is transversely provided with water holes 62 at equal intervals at the upper side of the arc-shaped water baffle 61, and one side of the additionally-installed plate 9, which is positioned at the inner side of the foundation pit, is fixedly provided with a water collecting tank 63 positioned below the water hole 62, the end part of the water collecting tank 63 is connected with a water drainage pipe 64, the water drainage pipe 64 is connected with a water valve 65 in series, if water seeps from the side wall of the foundation pit, the water can flow along the outer side of the supporting plate 1 and the outer side flow channel arc-shaped water baffle 61 of the additional mounting plate 9 and is blocked and collected by the arc-shaped water baffle 61, then flows into the water collecting tank 63 through the water hole 62 to be collected, accumulated water in the water collecting tank 63 is conveniently and periodically drained through the drain pipe 64, and the conduction of the drain pipe 64 can be controlled through the water valve 65.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A building foundation pit support structure, comprising:

the supporting plates (1) are provided with four supporting frames which are arranged on the inner wall of the foundation pit and are encircled into a supporting frame, and the top of each supporting plate (1) is provided with a pit edge protecting plate (8) vertical to the supporting plate (1);

the fixing unit (2) is arranged on one side, far away from the supporting plate (1), of the pit edge protecting plate (8);

the top opening units (3) are used for connecting adjacent pit edge protection plates (8) through the top opening units (3);

the bottom of the supporting plate (1) is connected with an additional plate (9) through the mounting unit (5);

and the adjacent supporting plates (1) are connected through the corner supporting units (7).

2. The supporting structure of the foundation pit of claim 1, wherein the fixing unit comprises an anchoring component and a reinforcing component, the side of the hole edge protection plate (8) far away from the supporting plate (1) is provided with the anchoring component, and the reinforcing component is arranged on the anchoring component.

3. The building foundation pit supporting structure of claim 2, wherein the anchoring assembly comprises a fixing rod (21), a fixing ring (22), a limiting cylinder (23), an anchor rod (24) and a ground thorn (213), the fixing ring (22) is fixed on one side, away from the supporting plate (1), of the pit edge protecting plate (8) through the fixing rod (21), the anchor rod (24) is inserted in the fixing ring (22), the limiting cylinder (23) is connected to the top of the anchor rod (24), and the ground thorn (213) is arranged at the bottom of the anchor rod (24).

4. The building foundation pit supporting structure according to claim 3, wherein the reinforcing component comprises a circular groove (25), an inner hexagonal block (26), a control screw (27), a control nut (28), a side groove (29), a stay bar (210), an arc-shaped movable block (211) and an insertion rod (212), a cylindrical mounting cavity is arranged on the upper side of the inside of the anchor rod (24), the circular groove (25) is formed in the top of the limiting cylinder (23), the control screw (27) is rotatably connected to the center of the bottom of the limiting cylinder (23), the top of the control screw (27) is located in the circular groove (25) and is connected with the inner hexagonal block (26), the bottom end of the control screw (27) extends into the mounting cavity and is in threaded connection with the control nut (28), two sides of the control nut (28) are respectively and movably connected with one end of the two stay bars (210), the side groove (29) of intercommunication installation cavity are seted up to the both sides of stock (24), the bottom of installation cavity is through arc movable block (211) two inserted bar (212) that correspond side groove (29), the middle part of two inserted bar (212) of other end difference swing joint of two vaulting poles (210).

5. The building foundation pit supporting structure according to claim 1, wherein the top expanding unit (3) comprises a mounting column (31), a top column (32), a movable cylinder (33), an internal screw (34), a mounting seat (35), an internal screw cylinder (36), a rotating ring (37) and a lever (38), the end parts of adjacent pit edge protecting plates (8) are fixed with the top column (32) through the mounting column (31), the top column (32) is movably sleeved with the movable cylinder (33), the side surface of one movable cylinder (33) close to two pit edge protecting plates (8) is connected with one end of the internal screw (34), the side surface of the other movable cylinder (33) close to two pit edge protecting plates (8) is rotatably connected with one end of the internal screw (36) through the mounting seat (35), and the other end of the internal screw (36) is in threaded connection with the other end of the internal screw (34), the side of the internal thread cylinder (36) is fixedly sleeved with a rotating ring (37), and the side of the rotating ring (37) is provided with a lever (38).

6. The building foundation pit supporting structure according to claim 1, wherein the mounting unit (5) comprises a connecting assembly and a pressing assembly, the bottom of the supporting plate (1) and the top of the installing plate (9) are connected through the connecting assembly, and the side surface of the supporting plate (1) is provided with the pressing assembly for fixing the installing plate (9).

7. The building foundation pit supporting structure of claim 6, wherein the connecting assembly comprises a connecting strip (56) and a connecting groove (57), the connecting groove (57) is respectively formed in the bottom of the supporting plate (1) and the bottom of the additional mounting plate (9), the connecting strip (56) is arranged at the top end of the additional mounting plate (9), and the connecting strip (56) is in fit clamping connection with the connecting groove (57).

8. The building foundation pit supporting structure of claim 7, wherein the pressing assembly comprises a pull ring (58), a limiting frame (59), a connecting square bar (510) and a square groove block (511), the limiting frame (59) is fixed on the side face of the bottom of the supporting plate (1), the connecting square bar (510) is connected in the limiting frame (59) in a vertical sliding mode, the pull ring (58) is connected to the top of the connecting square bar (510), the square groove block (511) is fixed on the side face of the top end of the installing plate (9) corresponding to the position of the connecting square bar (510), and the bottom end of the connecting square bar (510) is connected with the square groove on the square groove block (511) in a matched and clamped mode.

9. The building foundation pit supporting structure according to claim 6, wherein the connecting assembly comprises a first connecting rod (51), a first bearing (52), a connecting bolt (53), a connecting nut (54) and a second connecting rod (55), the first connecting rod (51) is fixed to the side face of the bottom of the supporting plate (1), the top of the connecting bolt (53) is rotatably connected to the end portion of the first connecting rod (51) through the first bearing (52), the second connecting rod (55) is fixed to the position, corresponding to the first connecting rod (51), of the side face of the top end of the installing plate (9), the connecting nut (54) vertically corresponding to the connecting bolt (53) is fixed to the end portion of the second connecting rod (55), and the connecting nut (54) is in threaded connection with the bottom end of the connecting bolt (53).

10. The building foundation pit supporting structure according to claim 9, wherein the pressing component comprises a longitudinal rod (512), a screw rod movable seat (513), a lever bolt (514), a lever nut (515), a movable seat (516), a middle rod (517), a pressing rod (518), a hinged support (519) and a pressing plate (520), the longitudinal rod (512) is fixed on the bottom side of the supporting plate (1), the end part of the longitudinal rod (512) is movably connected with the middle part of the middle rod (517), the top part of the middle rod (517) is movably connected with the movable seat (516), the lever nut (515) is fixed on the top part of the movable seat (516), the lever nut (515) is in threaded connection with the lever bolt (514), the rear end of the lever bolt (514) is rotatably connected with the screw rod movable seat (513), the side surface of the supporting plate (1) is movably connected with the screw rod movable seat (513) above the longitudinal rod (512), the bottom rear side of middle part pole (517) connects depression bar (518), the one end that depression bar (518) is close to backup pad (1) is through hinge support (519) swing joint pressure disk (520).