CN220318546U

CN220318546U - Adjustable supporting structure

Info

Publication number: CN220318546U
Application number: CN202321408347.0U
Authority: CN
Inventors: 汪洋; 岳迪; 彭远鹏; 赖宏星; 吴海鹏; 杨威; 刘飞辉
Original assignee: Guangdong Puyang Foundation Engineering Co ltd
Current assignee: Guangdong Puyang Foundation Engineering Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2024-01-09
Anticipated expiration: 2033-06-02

Abstract

The utility model belongs to the technical field of foundation pit supporting structures, and provides an adjustable supporting structure which comprises a steel sheet pile, wherein the steel sheet pile is provided with a plurality of upper cofferdams and lower cofferdams which are mutually fixed to form a rectangle, steel inner supports for supporting two adjacent surfaces of the lower cofferdams are obliquely arranged at four corners of the lower cofferdams, L-shaped brackets are arranged at two ends of the steel inner supports on the lower cofferdams, two ends of the steel inner supports are slidably connected to two sides of the brackets, an adjusting mechanism for adjusting the inclination angle of the steel inner supports and a fixing mechanism for fixing the inclination angle of the steel inner supports are arranged on the brackets, the lower cofferdams are provided with rectangular movable grooves, the upper cofferdams are inserted into the movable grooves, and the supporting structure further comprises a lifting mechanism for driving the upper cofferdams to move up and down. The utility model solves the problems that the inclination angle of the supporting steel structure on the existing supporting device cannot be conveniently and rapidly adjusted along with the change of the soil layer, and the height of the cofferdam cannot be automatically adjusted according to the depth of the foundation pit.

Description

Adjustable supporting structure

Technical Field

The utility model belongs to the technical field of foundation pit supporting structures, and particularly relates to an adjustable supporting structure.

Background

The foundation pit is a soil pit excavated at a foundation design position according to the elevation of the substrate and the plane size of the foundation. Deep foundation pit refers to a foundation pit with a depth of more than 5 meters (including 5 meters), or a depth of not more than 5 meters, but with particularly complex geological conditions and surrounding environment and underground pipelines. In order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, the deep foundation pit is internally provided with supporting structures on the side wall and the periphery thereof, and the supporting structures are used as measures for reinforcing and protecting the deep foundation pit. The steel sheet pile support is adopted in the deep foundation pit support at the longest, and has the advantages of high strength, good waterproof performance, low cost and repeated use, but the steel sheet pile is required to be matched with the steel inner support for use due to weak bending resistance.

The utility model discloses a steel sheet pile foundation pit supporting structure with controllable deformation in an utility model patent document with an authorized bulletin number of CN201820506896, which comprises steel sheet piles symmetrically arranged on two sides, a waist beam arranged on the steel sheet piles, supporting steel arranged between the steel sheet piles on two sides and supporting limiting devices arranged at two ends of the supporting steel, wherein the supporting limiting devices are connected with the steel sheet piles through the waist beam, the supporting steel comprises steel pipes and hollow round steel pipes arranged at two ends of the steel pipes, and the supporting limiting devices comprise channel steel used for connecting the ends of the supporting steel and bolts penetrating through the round steel pipes and connecting the channel steel and the waist beam. The foundation pit supporting structure is horizontally displaced and fixed through the supporting limiting device, so that the distance between the foundation pit supporting structures is adjusted, and the deformation requirements of different foundation pits are met.

However, in the above structure, the stress on the four sides of the foundation pit is not uniform, and the foundation pit adjacent surface is not prevented from tilting due to unbalanced stress by only supporting between the opposite surfaces, and the supporting steel which is arranged in a tilting manner and has both ends fixed on the adjacent surface is welded on the cofferdam for supporting the adjacent surface. Along with the excavation of foundation ditch, the soil horizon can be along with the infiltration of underground or soil multiple reasons such as becoming flexible and change to the adjacent face's pressure, and the support steel inclination can not adjust this moment, can not change the holding power to the adjacent face with pertinence, uses inconveniently. And the height of the cofferdam can not be adjusted, if the soil above the cofferdam loosens, the height of the cofferdam is also required to be adjusted, so that the cofferdam is very troublesome, time is wasted, and the material demand is increased.

Disclosure of Invention

The present utility model aims to solve the above problems of the prior art and to provide an adjustable support structure.

The utility model adopts the following technical scheme:

this supporting construction with adjustable includes the steel sheet pile, the steel sheet pile has a plurality of and fixes last cofferdam and the lower cofferdam that forms the rectangle each other, the four corners slope of cofferdam is provided with the steel internal stay that is used for supporting two adjacent faces of cofferdam down, be located the steel internal stay both ends on the lower cofferdam and be provided with the support of L shape, the both ends sliding connection of steel internal stay is on the both sides of support, be provided with the adjustment mechanism who is used for adjusting steel internal stay inclination and the fixed establishment who is used for fixing steel internal stay inclination on the support, it has the movable slot of rectangle to open on the lower cofferdam, go up the cofferdam and insert the movable slot in, supporting construction is still including the elevating system that the cofferdam reciprocated in the drive.

Further, the two sides of the support are provided with sliding grooves, the adjusting mechanism comprises movable rods, the movable rods are inserted into the sliding grooves and connected to the two sides of the support in an inserted mode, sliding blocks fixedly connected with the movable rods are arranged in the sliding grooves, the two ends of the steel inner support are rotationally connected with the sliding blocks, the adjusting mechanism further comprises a driving motor fixedly connected to the lower cofferdam, a driving gear is fixedly connected to an output shaft of the driving motor, and racks meshed with the driving gear are arranged on the movable rods.

Further, the two sides of the support are also provided with movable cavities, movable blocks are embedded in the movable cavities, and the movable rods are also inserted into the movable cavities and fixedly connected with the movable blocks.

Further, the fixed establishment is including linking firmly the fixed block on lower cofferdam, the movable rod passes the fixed block, still evenly spaced is equipped with a plurality of screw hole on the movable rod, open on the fixed block have with the coaxial screw hole of screw hole, the fixed establishment still includes the set screw of spiro union in screw hole and screw hole.

Further, the upper part of the lower cofferdam is fixedly connected with a rectangular frame through a plurality of connecting columns, the lifting mechanism comprises a plurality of screws penetrating through the upper cofferdam, two ends of each screw are respectively connected to the frame and the bottom surface of the movable groove in a screwed mode, the lifting mechanism further comprises a lifting motor arranged on the frame, and an output shaft of the lifting motor is fixedly connected with the frame.

Further, a plurality of fixing nails are fixedly connected to the bottom surface of the lower cofferdam.

The beneficial effects of the utility model are as follows:

1. the regulating mechanism arranged on the supporting structure can enable the two ends of the steel inner support to move along the two sides of the support, so that the inclination angle of the steel inner support is changed, the fixing mechanism can fix the inclination angle of the steel inner support, the regulating control of the supporting force of the two adjacent surfaces of the lower cofferdam is realized, and the regulating mechanism is suitable for the supporting requirements of different surfaces of the lower cofferdam from different soil layers.

2. The elevating system who sets up on this supporting construction can go up and down last cofferdam, when the foundation ditch is deeper or soil is not hard up, can go up the cofferdam and go up and down, reaches the effect of protecting the foundation ditch, utilizes the automatic rising of last cofferdam, just need not increase original support, has reduced the waste to the material, has reduced the loss of manpower and materials.

Drawings

Fig. 1 is a top view of a support structure provided by the present utility model.

Fig. 2 is a cross-sectional view of a support structure provided by the present utility model.

Fig. 3 is a partially enlarged schematic view of the structure shown in fig. 2 a.

Fig. 4 is a cross-sectional view of a portion of the structure of the support structure provided by the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order to illustrate the technical scheme of the utility model, the following description is made by specific examples.

Only those parts relevant to the embodiments of the present utility model are shown for convenience of description.

The supporting structure comprises a steel sheet pile, wherein the steel sheet pile is provided with a plurality of upper cofferdams 2 and lower cofferdams 1 which are mutually fixed to form a rectangle, steel internal supports 3 used for supporting two adjacent surfaces of the lower cofferdams 1 are obliquely arranged at four corners of the lower cofferdams 1, L-shaped supports 4 are arranged at two ends of each lower cofferdam 1, two ends of each steel internal support 3 are slidably connected onto two sides of each support 4, an adjusting mechanism 5 used for adjusting the inclination angle of each steel internal support 3 and a fixing mechanism 6 used for fixing the inclination angle of each steel internal support 3 are arranged on each support 4, the lower cofferdams 1 are provided with rectangular movable grooves, the upper cofferdams 2 are inserted into the movable grooves, the supporting structure further comprises lifting mechanisms 7 used for driving the upper cofferdams 2 to move up and down, and a plurality of fixing nails 8 are fixedly connected onto the bottom surface of the lower cofferdams 1.

The upper cofferdam is also provided with a steel inner support, a bracket, an adjusting mechanism and a fixing mechanism which are the same as or similar to those of the lower cofferdam, and the description is omitted here. The upper cofferdam and the lower cofferdam can be provided with a plurality of groups of steel internal stay, a bracket, an adjusting mechanism and a fixing mechanism up and down, so that the supporting effect on the upper cofferdam and the lower cofferdam is better. The adjusting mechanism adjusts the inclination angle of the steel inner support, and the fixing mechanism fixes the inclination angle of the steel inner support, so that the supporting force of the steel inner support on two adjacent surfaces of the upper cofferdam and/or the lower cofferdam is changed, and the steel inner support is suitable for the condition of pressing the lower cofferdam and/or the upper cofferdam by the soil layer in the foundation pit. The lifting mechanism changes the height of the upper cofferdam, so that the supporting structure is suitable for the depth of the foundation pit. The fixed nails on the bottom surface of the lower cofferdam are inserted into the soil layer, so that the lower cofferdam is firmly connected with the soil layer.

As shown in fig. 3 and 4, as a preferred structure, both sides of the bracket 4 are provided with sliding grooves 41, the adjusting mechanism 5 comprises movable rods 51, the movable rods 51 are inserted into both sides of the bracket 4 and inserted into the sliding grooves 41, sliding blocks 9 fixedly connected with the movable rods 51 are arranged in the sliding grooves 41, both ends of the steel inner support 3 are rotationally connected with the sliding blocks 9, the adjusting mechanism 5 further comprises a driving motor 52 fixedly connected with the lower cofferdam 1, a driving gear 53 is fixedly connected with an output shaft of the driving motor 52, racks 54 meshed with the driving gear 53 are arranged on the movable rods 51, both sides of the bracket 4 are provided with movable cavities 42, movable blocks 10 are embedded in the movable cavities 42, and the movable rods 51 are further inserted into the movable cavities 42 and fixedly connected with the movable blocks 10. The driving motor drives the movable rod to move through the gear rack structure, and the movable rod drives the steel inner support to change the inclination angle through the sliding block, so that the inclination angle of the steel inner support is conveniently adjusted through the adjusting mechanism on the supporting structure. The movable block fixedly connected with one end of the movable rod is embedded into the movable cavity and can move in the movable cavity, the movable block plays a role in limiting the movable rod, and the problem that the adjusting mechanism is failed due to overlong moving distance of the movable rod is avoided.

As shown in fig. 1 and 2, as a preferred structure, the fixing mechanism 6 comprises a fixing block 61 fixedly connected to the lower cofferdam 1, the movable rod 51 penetrates through the fixing block 61, a plurality of threaded holes are uniformly formed in the movable rod 61 at intervals, the fixing block 61 is provided with screw holes coaxial with the threaded holes, and the fixing mechanism 4 further comprises fixing screws 62 screwed into the threaded holes and the screw holes. The fixed screw is connected into the threaded hole and the screw hole, and the movable rod is fixedly connected with the fixed block, so that the steel inner support inclination angle is fixed.

As shown in fig. 2, as a preferable structure, the upper part of the lower cofferdam 1 is fixedly connected with a rectangular frame 12 through a plurality of connecting columns 11, the lifting mechanism 7 comprises a plurality of screw rods 71 penetrating through the upper cofferdam 2, two ends of the screw rods 71 are respectively connected to the frame 12 and the bottom surface of the movable slot 101 in a screwed manner, the lifting mechanism 7 further comprises a lifting motor 72 arranged on the frame 12, and the output shaft of the lifting motor 72 is fixedly connected with the screw rods 71. The lifting motor drives the screw rod to rotate, and the upper cofferdam connected with the screw rod moves up and down when the screw rod rotates, so that the supporting structure realizes automatic lifting of the upper cofferdam.

Starting a driving motor, driving the driving gear to rotate, driving the driving gear to drive the movable rod to move in the sliding groove through a rack on the movable rod, driving the sliding block to move by the movable rod, and driving the inclined angle of the steel inner support to change by the sliding block. And starting the lifting motor, driving the screw rod to rotate by the lifting motor, and moving the upper cofferdam up and down along the screw rod while rotating the screw rod.

To sum up: the utility model provides an adjustable supporting structure, wherein the adjusting mechanism arranged on the supporting structure can enable two ends of the steel inner support to move along two sides of the support, so that the inclination angle of the steel inner support is changed, the fixing mechanism can fix the inclination angle of the steel inner support, the adjustment and control of supporting force of two adjacent surfaces of a lower cofferdam are realized, and the supporting structure is suitable for supporting requirements of different surfaces of the lower cofferdam from different forces of soil layers. The elevating system who sets up on this supporting construction can go up and down last cofferdam, when the foundation ditch is deeper or soil is not hard up, can go up the cofferdam and go up and down, reaches the effect of protecting the foundation ditch, utilizes the automatic rising of last cofferdam, just need not increase original support, has reduced the waste to the material, has reduced the loss of manpower and materials.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a supporting construction with adjustable, includes the steel sheet pile, its characterized in that, the steel sheet pile has a plurality of and fixes each other and form the upper cofferdam and the lower cofferdam of rectangle, the four corners slope of lower cofferdam is provided with the steel internal stay that is used for supporting two adjacent faces of lower cofferdam, be located the steel internal stay both ends on the lower cofferdam and be provided with L-shaped support, the both ends sliding connection of steel internal stay is on the both sides of support, be provided with the adjustment mechanism who is used for adjusting steel internal stay inclination and the fixed establishment who is used for fixed steel internal stay inclination on the support, it has the movable slot of rectangle to open on the lower cofferdam, go up the cofferdam and insert the movable slot in, supporting construction is still including the elevating system who reciprocates in the drive upper cofferdam.

2. The adjustable supporting structure according to claim 1, wherein sliding grooves are formed in two sides of the support, the adjusting mechanism comprises a movable rod, the movable rod is inserted into the sliding grooves in a plugging mode on two sides of the support, a sliding block fixedly connected with the movable rod is arranged in the sliding grooves, two ends of the steel inner support are rotatably connected with the sliding block, the adjusting mechanism further comprises a driving motor fixedly connected to the lower cofferdam, a driving gear is fixedly connected to an output shaft of the driving motor, and racks meshed with the driving gear are arranged on the movable rod.

3. The adjustable support structure of claim 2, wherein the two sides of the bracket are further provided with a movable cavity, the movable cavity is embedded with a movable block, and the movable rod is further inserted into the movable cavity and fixedly connected with the movable block.

4. The adjustable support structure of claim 3, wherein the fixing mechanism comprises a fixing block fixedly connected to the lower cofferdam, the movable rod penetrates through the fixing block, a plurality of threaded holes are uniformly formed in the movable rod at intervals, screw holes coaxial with the threaded holes are formed in the fixing block, and fixing screws screwed into the threaded holes and the screw holes are further included in the fixing mechanism.

5. The adjustable support structure of claim 4, wherein the rectangular frame is fixedly connected above the lower cofferdam through a plurality of connecting columns, the lifting mechanism comprises a plurality of screws penetrating through the upper cofferdam, two ends of each screw are respectively connected to the frame and the bottom surface of the movable groove in a threaded manner, the lifting mechanism further comprises a lifting motor arranged on the frame, and an output shaft of the lifting motor is fixedly connected with each screw.

6. The adjustable support structure of claim 5, wherein a plurality of fixing nails are fixedly connected to the bottom surface of the lower cofferdam.