CN218861539U - Foundation pit support steel shotcrete and steel enclose purlin connection structure - Google Patents

Abstract

The application relates to a connection structure of a foundation pit support steel support and a steel enclosing purlin, which comprises the steel enclosing purlin and the steel support, wherein two steel enclosing purlins are respectively and fixedly arranged on opposite side walls of a deep foundation pit, and the steel support is arranged between the two steel enclosing purlins; both ends of the steel support in the length direction are provided with movable heads; the adjustable head comprises a supporting mechanism and a butting plate, the supporting mechanism is arranged at one end of the steel support in the length direction, the butting plate is arranged at one end of the supporting mechanism, which is far away from the steel support, the supporting mechanism drives the butting plate to slide along the length direction of the steel support, and the butting plate butts against the steel purlin tightly through sliding; this application has the effect that reduces the influence of clearance to bearing structure intensity.

Description

Foundation pit support steel shotcrete and steel enclose purlin connection structure

Technical Field

The utility model relates to a deep basal pit supporting's field especially relates to a excavation supporting steel shotcrete and steel enclose purlin connection structure.

Background

The steel support means that the stability of an engineering structure is enhanced by using steel pipes, H-shaped steel purlins, angle steels and the like, and the steel support is generally an inclined connecting component, and is most commonly in a herringbone shape and a cross shape. The steel support is widely applied to the aspects of subway and foundation pit support. The steel support can be recycled, and has the characteristics of economy, environmental protection and the like.

Steel purlins, also known as steel fenders or steel sills. Generally, two or more steel surrounding purlins with the same type and length are adopted for splicing. Splicing quality is guaranteed in the splicing process, and the common stress of the steel enclosing purlins is guaranteed. The steel purlin is used for connecting the support and the fender pile, and the gap between the support and the fender pile needs to be filled with fine aggregate concrete, so that the steel purlin plays a role in fixing the steel support and transferring load.

The existing deep foundation pit supporting work is carried out, the steel enclosing purlins are fixedly arranged on two sides of a deep foundation pit to be supported, and then steel supports are arranged between the two steel enclosing purlins for supporting the deep foundation pit.

To the above-mentioned correlation technique, the inventor thinks that when carrying out supporting construction installation, the length of steel shotcrete often can't enclose the perfect adaptation of distance between the purlin with two steels, and when steel shotcrete and steel enclose the purlin and have the clearance, the stability of strutting can descend to influence bearing structure's intensity.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence of clearance to bearing structure intensity, this application provides a excavation supporting steel shotcrete and steel purlin connection structure.

The application provides a pair of excavation supporting steel shotcrete and steel enclose purlin connection structure adopts following technical scheme:

a connection structure of a foundation pit support steel support and a steel purlin comprises the steel purlin and the steel support, wherein two steel purlins are fixedly arranged on opposite side walls of a deep foundation pit respectively, and the steel support is arranged between the two steel purlins; both ends of the steel support in the length direction are provided with movable heads; the adjustable head comprises a supporting mechanism and a butt plate, the supporting mechanism is installed at one end of the steel support in the length direction, the butt plate is installed at one end of the supporting mechanism far away from the steel support, the supporting mechanism drives the butt plate to slide along the length direction of the steel support, and the butt plate tightly abuts against the steel surrounding purlin through sliding.

Through adopting above-mentioned technical scheme, enclose the purlin through supporting mechanism messenger butt joint board and steel and support tightly, improve the support intensity when steel shotcrete and steel enclose the purlin and connect, reduce the influence of clearance to bearing structure intensity.

Optionally, the supporting mechanism includes a plurality of fixing blocks; the fixed block is inserted between steel shotcrete and the steel purlin.

Through adopting above-mentioned technical scheme, the butt joint board carries out the butt through inserting and establishing proper amount fixed block and supports to tight steel enclosing purlin after the butt joint board supports, reduces the probability that butt joint board atress slided towards the steel shotcrete direction to increase the bearing structure intensity of steel shotcrete.

Optionally, a base is arranged at one end, away from the steel purlin, of the abutting plate, one side, facing the ground, of the base is flush with one side, facing the ground, of the steel purlin, and one side, away from the ground, of the base is attached to one side, facing the ground, of the steel support; the fixed block is towards ground one side and base and deviates from ground one side butt.

Through adopting above-mentioned technical scheme, through the setting of base, make the fixed block deviate from ground one side in the base towards ground one side butt, carry on spacingly to the fixed block, reduced the fixed block from the steel enclose the probability that drops between purlin and the steel shotcrete.

Optionally, the supporting mechanism includes a plurality of pressure springs; one end of the pressure spring is arranged at one end of the steel support, which faces the steel purlin, and the other end of the pressure spring, which is far away from the steel support, is connected with one side of the abutting plate; the pressure spring drive butt joint board butt steel encloses the purlin.

By adopting the technical scheme, the pressure spring is in an extrusion state when the abutting plate abuts against the steel purlin, and the abutting plate abuts against the steel purlin by utilizing the resilience force of the pressure spring; the influence of the gap on the strength of the supporting structure is reduced.

Optionally, a plurality of guide rods are arranged on one side, facing the steel support, of the abutting plate, the guide rods correspond to the pressure springs, the pressure springs are respectively sleeved outside the corresponding guide rods, one ends, far away from the abutting plate, of the guide rods slide to be inserted into the steel support, and the guide rods slide along the length direction of the steel support.

Through adopting above-mentioned technical scheme, the guide bar direction butt plate slides, can not appear the skew when making the butt plate slide to inject the deformation direction of pressure spring, reduced the pressure spring deformation and leaded to the elasticity direction not with the probability of foundation ditch lateral wall out of plumb, promoted support strength.

Optionally, the abutting plate is circumferentially and evenly provided with a guide plate, and one end, far away from the abutting plate, of the guide plate inclines towards one side of the pressure spring.

Through adopting above-mentioned technical scheme, enclose the purlin butt with the deflector of arbitrary one side of butt plate and steel, compress the pressure spring through the inclination of deflector, improved the installation effectiveness of steel shotcrete on the steel encloses the purlin.

Optionally, the deflector rotates with the butt plate to be connected, and the deflector is kept away from butt plate one end and all is provided with the installed part, rotates when the deflector to the level installed part fixed mounting is on the steel shotcrete.

Through adopting above-mentioned technical scheme, support tight steel at the butt board and enclose the purlin after, through rotating the deflector, set up mounting assembly one end with the deflector and install on the steel shotcrete, for the steel shotcrete provides the holding power, further improved supporting mechanism's stability.

Optionally, the two ends of the steel support are both provided with inhaul cables, and the inhaul cables are arranged on one side, away from the ground, of the steel support; one end of the stay cable, which is far away from the steel support, is arranged on the side wall of the deep foundation pit above the steel purlin, and the stay cable is obliquely arranged.

Through adopting above-mentioned technical scheme, through the setting of cable, make cable and deep basal pit lateral wall and steel enclose the purlin and form stable triangle-shaped, utilize stable triangle-shaped to provide ascending pulling force for the steel shotcrete, reduce the probability that supporting mechanism bending damage, reduce the probability that the steel shotcrete drops.

Optionally, a tensioning member is arranged on the cable, and the tensioning member tensions the cable.

By adopting the technical scheme, the inhaul cable is tensioned in the fixing process, so that the inhaul cable is convenient to mount and dismount; through adjusting the length of the inhaul cable, the inhaul cable is suitable for steel purlins with different lengths, and the applicability of the inhaul cable is improved.

Optionally, a triangular bracket is arranged on one side of the steel purlin, which is far away from the inhaul cable, and the triangular bracket comprises an installation rod, a bearing rod and a support rod; the mounting rod is attached to the side wall of the deep foundation pit along the vertical direction and mounted on the side wall of the deep foundation pit, and the bearing rod is perpendicular to the side wall of the deep foundation pit and arranged on one side, away from the ground, of the mounting rod; the bearing bar includes dead lever and slide bar, dead lever one end sets up on the installation pole, the slide bar slides and sets up and keep away from installation pole one end in the dead lever, and the slide bar slides along the horizontal direction, and the slide bar is kept away from dead lever one end and is rotated and be provided with the bracing piece, and the bracing piece is kept away from slide bar one end and is slided and rotate and set up in the installation pole, and the bracing piece slides along the vertical direction of installation pole.

Through adopting above-mentioned technical scheme, through setting up the triangle-shaped bracket that can slide, enclose the length of purlin according to the steel and adjust the triangle-shaped bracket, improved the application scope of triangle-shaped bracket.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the movable head is arranged to connect the steel support and the steel purlin, so that the stability of the support is improved;

2. the movable head is arranged to be relatively poured with filling materials, and the installation and the removal are relatively simple and convenient;

drawings

FIG. 1 is an assembly view of an embodiment;

FIG. 2 is an enlarged view of a steel purlin of the first embodiment;

FIG. 3 is an enlarged view of the cable connection;

FIG. 4 is an assembly view of the second embodiment;

FIG. 5 is an enlarged view of the second embodiment at the beginning of the cycle.

FIG. 6 is a diagram showing the relationship between the positions of the guide plates and the steel purlin during the assembly process of the second embodiment

Description of the reference numerals: 1. steel purlin; 2. supporting steel; 3. a head is moved; 31. a support mechanism; 311. a fixed block; 312. compressing the spring; 313. a guide rod; 32. a butt joint plate; 4. a base; 5. a guide plate; 6. a mounting member; 7. a cable; 8. a triangular bracket; 81. mounting a rod; 82. a load-bearing bar; 821. a fixing rod; 822. a slide bar; 83. a support bar; 9. a steel plate; 10. a pull ring; 11. a tensioning member; 111. a cylinder; 112. hooking; 12. the side wall of the deep foundation pit; 13. a first waist-shaped hole; 14. a second waist-shaped hole; 15. a first through hole; 16. a second through hole; 17. a chute; 18. and a screw hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The steel support and the steel purlin are used as deep foundation pit supporting devices widely applied by people, and the construction efficiency in the construction process is paid more attention by construction units.

The first embodiment is as follows:

the embodiment of the application discloses a connection structure of a foundation pit support steel support and a steel surrounding purlin, and the connection structure comprises a steel surrounding purlin 1 and a steel support 2, wherein a steel plate 9 is pre-embedded at a part to be supported on a side wall 12 of a deep foundation pit, one end of the steel surrounding purlin 1 is welded with the steel plate 9, the steel surrounding purlin 1 is fixedly arranged on the opposite side wall to be supported of the deep foundation pit through the steel plate 9, and the steel support 2 is arranged between the two steel surrounding purlins 1; the two ends of the steel support 2 in the length direction are provided with movable heads 3; the adjustable joint 3 comprises a supporting mechanism 31 and a butt joint plate 32, the supporting mechanism 31 comprises a jack and a fixing block 311, one end of the jack is detachably arranged on the steel support 2, the butt joint plate 32 is detachably arranged at one end, far away from the steel support 2, of the jack, the jack drives the butt joint plate 32 to slide along the length direction of the steel support 2, one side, far away from the jack, of the butt joint plate 32 is abutted and tightly connected to one end, far away from the deep foundation pit side wall 12, of the steel purlin 1 through the jack, the fixing block 311 is provided with a plurality of fixing blocks, the fixing block 311 is inserted between the butt joint plate 32 and the steel support 2, the fixing block 311 is preferably a steel wedge, and the steel wedge is provided with an inclined surface and is convenient to insert and slide; two steel wedges are a set of, and the mutual butt in inclined plane of every group steel wedge makes two steel wedges exert force outward through drive top steel wedge to play the supporting effect, butt board 32 below has set firmly base 4, and the steel wedge is towards ground one end butt on base 4, and 2 steel shotcrete are towards ground one side butt and deviate from ground one side in base 4.

Referring to fig. 2, three groups of triangular brackets 8 are arranged on one side, facing the ground, of the steel purlin 1, and each group of triangular brackets 8 comprises an installation rod 81, a bearing rod 82 and a supporting rod 83; the mounting rod 81 is mounted on the side wall 12 of the deep foundation pit along the vertical direction, and the bearing rod 82 is perpendicular to the side wall 12 of the deep foundation pit and is arranged at one end, away from the ground, of the mounting rod 81; the bearing rod 82 comprises a fixed rod 821 and a sliding rod 822, one end of the fixed rod 821 is fixedly arranged on the installation rod 81, the side wall of one end of the sliding rod 822 is abutted to the side wall of one end of the fixed rod 821, which is far away from the installation rod 81, the sliding rod 822 slides along the length direction of the fixed rod 821, and one side of the sliding rod 822, which is far away from the ground, is flush with one side of the fixed rod 821, which is far away from the ground; the supporting rod 83 is hinged to one end of the sliding rod 822 far away from the fixing rod 821; one end of the support rod 83, which is far away from the sliding rod 822, slides and is rotatably arranged on one side, which is far away from the side wall 12 of the deep foundation pit, of the mounting rod 81, and the support rod 83 slides along the vertical direction; the mounting rod 81 is provided with a first waist-shaped hole 13, and the first waist-shaped hole 13 penetrates through the mounting rod 81 in the width direction of the mounting rod 81; one end of the support rod 83, which is far away from the sliding rod 822, is provided with a first through hole 15, the first through hole 15 penetrates through the width direction of the support rod 83, and the first through hole 15 is matched with the first waist-shaped hole 13; a bolt penetrates through the first waist-shaped hole 13 and the first through hole 15, a nut is connected to the bolt in a threaded mode, the nut is screwed down to fix the supporting rod 83 on the mounting rod 81, and the bolt is unscrewed to enable the supporting rod 83 to rotate and slide on the mounting rod 81 through the bolt; a second waist-shaped hole 14 is formed in one end of the fixing rod 821 close to the sliding rod 822 in the width direction, and the second waist-shaped hole 14 penetrates through the fixing rod 821; one end of the sliding rod 822 facing the fixing rod 821 is provided with two second through holes 16; the second through hole 16 penetrates through the width direction of the sliding rod 822, and the second through hole 16 is matched with the second waist-shaped hole 14; a bolt is inserted through the second kidney-shaped hole 14 and the second through hole 16, and a nut is connected with the bolt through threads; tightening the nut to fix the slide lever 822 to the fixing lever 821; loosening the nut causes the sliding rod 822 to slide along the length of the fixed rod 821.

Referring to fig. 1 and 3, a pull ring 10 is arranged on one side of the steel support 2, which deviates from the ground, in the circumferential direction, and the pull ring 10 is fixedly arranged on one side of the steel support 2, which is close to the spinning head 3; be provided with tensioning member 11 on pull ring 10, tensioning member 11 includes a cylinder 111 and two couples 112, couple 112 sets up respectively at cylinder 111 length direction both ends, one of them couple 112 hangs and establishes on pull ring 10, the equal threaded connection of couple 112 at cylinder 111 both ends is on cylinder 111, make couple 112 towards being close to or keeping away from cylinder 111 direction and slide through the mutual rotation of couple 112 and cylinder 111, it establishes cable 7 to hang on the couple 112 that deviates from pull ring 10 one end, cable 7 keeps away from couple 112 one end and sets firmly on deep basal pit lateral wall 12 in steel purlin 1 top, cable 7 is the triangle-structure with steel shotcrete 2 and deep basal pit lateral wall 12, cable 7 provides the pulling force for steel shotcrete 2, reduce the probability that steel shotcrete 2 dropped, two couples 112 are opposite with cylinder 111 threaded connection's screw orientation, when rotating cylinder 111, two couples 112 simultaneously towards keeping away from or being close to cylinder 111 direction and slide, thereby realize tensioning and relaxing of cable 7.

The implementation principle of the embodiment of the application is as follows: after the deep foundation pit is dug, steel plates 9 are embedded into two opposite sides of the deep foundation pit to be supported on the side walls, triangular brackets 8 are installed on one sides of the steel plates 9 facing the side walls 12 of the deep foundation pit, the length of the bearing rods 82 is adjusted according to the length of the steel enclosing purlins 1, the steel enclosing purlins 1 are placed on the bearing rods 82, one ends of the steel enclosing purlins 1 are welded to the embedded steel plates 9, then the steel supports 2 are hoisted to the position between the two steel enclosing purlins 1, the jacks are started to enable the abutting plates 32 to abut against the steel enclosing purlins 1, the abutting plates 32 and the steel enclosing purlins 1 are welded to each other and deviate from one ends of the side walls 12 of the deep foundation pit, the bases 4 are welded to the abutting plates 32, then appropriate fixing blocks 311 are filled between the steel enclosing purlins 1 and the steel supports 2, the fixing blocks 311 are placed on the bases 4, then roof plates are welded to the upper portions of the abutting plates 32, one ends of the fixing plates deviate from one ends of the bases 4, the jacks are dismantled, and installation of the steel supports 2 and the steel enclosing purlins 1 is completed.

Example two:

compared with the first embodiment, the supporting mechanism 31 of the first embodiment is different from the first embodiment, and referring to fig. 4 and 5, the supporting mechanism 31 includes four compression springs 312 and a guide rod 313, the four compression springs 312 are uniformly distributed and arranged between the abutting plate 32 and the steel support 2, one end of each compression spring 312 abuts against the abutting plate 32, and the other end of each compression spring 312 abuts against the steel support 2; the elastic force of the pressure spring 312 drives the abutting plate 32 to slide away from the steel support 2, the number of the guide rods 313 fixedly arranged on one side, facing the steel support 2, of the abutting plate 32 is the same as that of the pressure springs 312, the pressure springs 312 are respectively sleeved on the guide rods 313, one end, far away from the abutting plate 32, of each guide rod 313 is inserted into the steel support 2, one side, far away from the pressure spring 312, of the abutting plate 32 sliding along the length direction of the steel support 2 is connected with one end, far away from the deep foundation pit side wall 12, of the steel purlin 1 through the elastic force of the pressure spring 312.

Referring to fig. 6, the abutting plates 32 are circumferentially hinged with the guide plates 5, and the guide plates 5 are inclined toward the compression springs 312 by rotation; the middle part of one end of the guide plate 5 far away from the abutting plate 32 in the thickness direction is provided with a sliding groove 17, and the sliding groove 17 penetrates through the guide plate 5; the sliding groove 17 is a waist-shaped long groove, screw holes 18 are formed in the circumferential direction of the steel support 2, the guide plate 5 is rotated to enable the guide plate 5 to be attached to the side wall of the steel support 2, a bolt is installed in the sliding groove 17 and penetrates through the sliding groove 17 to be in threaded connection with the screw holes 18, and the guide plate 5 and the steel support 2 are fixed.

The implementation principle of the embodiment of the application is as follows: after the deep foundation pit is dug, steel plate 9 is embedded into two opposite sides of the deep foundation pit and is to be supported, triangular bracket 8 is installed on one side of the steel plate 9 facing the side wall 12 of the deep foundation pit, the length of bearing rod 82 is adjusted according to the length of steel enclosing purlin 1, steel enclosing purlin 1 is placed on bearing rod 82, one end of steel enclosing purlin 1 is welded onto embedded steel plate 9, steel support 2 is hoisted to the position between two steel enclosing purlins 1, guide plate 5 butt steel enclosing purlin 1 in the process, butt plate 32 is driven to slide towards the direction of steel support 2, when steel support 2 is completely placed between two steel enclosing purlins 1, butt plates 32 at two ends of steel support 2 abut against steel enclosing purlin 1 under the elasticity of pressure spring 312, butt plate 32 and one end of side wall 12 of the deep foundation pit are welded with steel enclosing purlin 1, guide plate 5 butt steel support 2 is rotated, guide plate 5 is fixed with steel support 2 by mounting bolts, and mounting of steel support 2 and surrounding purlin 1 is completed.

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

Claims (10)

1. A connection structure of a foundation pit support steel support and a steel purlin comprises steel purlins (1) and steel supports (2), wherein two of the steel purlins (1) are fixedly arranged on opposite side walls of a deep foundation pit respectively, and the steel supports (2) are arranged between the two steel purlins (1); the method is characterized in that: both ends of the steel support (2) in the length direction are provided with movable heads (3); the adjustable joint head (3) comprises a supporting mechanism (31) and a butt joint plate (32), the supporting mechanism (31) is installed at one end of the steel support (2) in the length direction, the butt joint plate (32) is installed at one end, far away from the steel support (2), of the supporting mechanism (31), the supporting mechanism (31) drives the butt joint plate (32) to slide along the length direction of the steel support (2), and the butt joint plate (32) abuts against the steel surrounding purlin (1) through sliding.

2. The foundation pit support steel shotcrete and steel purlin connection structure of claim 1, characterized in that: the supporting mechanism (31) comprises a plurality of fixed blocks (311); the fixing block (311) is inserted between the steel support (2) and the steel purlin (1).

3. The foundation pit support steel shotcrete and steel purlin connection structure of claim 2, characterized in that: one end, departing from the steel purlin (1), of the abutting plate (32) is provided with a base (4), one side, facing the ground, of the base (4) is flush with one side, facing the ground, of the steel purlin (1), and one side, departing from the ground, of the base (4) is attached to one side, facing the ground, of the steel support (2); one side of the fixed block (311) facing the ground is abutted against one side of the base (4) departing from the ground.

4. The foundation pit support steel shotcrete and steel enclose purlin connection structure of claim 1, characterized in that: the supporting mechanism (31) comprises a plurality of compression springs (312); one end of each pressure spring (312) is arranged at one end, facing the steel enclosing purlin (1), of the corresponding steel support (2), and one end, far away from the steel supports (2), of each pressure spring (312) is connected with one side of the corresponding abutting plate (32); the pressure spring (312) drives the abutting plate (32) to abut against the steel surrounding purlin (1).

5. The foundation pit support steel shotcrete and steel purlin connection structure of claim 4, characterized in that: the butt joint board (32) are provided with a plurality of guide bars (313) towards steel shotcrete (2) one side, and guide bar (313) correspond pressure spring (312) and set up, and outside corresponding guide bar (313) were located in the cover respectively in pressure spring (312), guide bar (313) were kept away from butt joint board (32) one end and are slided and insert and locate steel shotcrete (2), and guide bar (313) slide along steel shotcrete (2) length direction.

6. The foundation pit support steel shotcrete and steel purlin connection structure of claim 5, characterized in that: the abutting plate (32) is circumferentially and uniformly provided with guide plates (5), and one end, far away from the abutting plate (32), of each guide plate (5) inclines towards one side of the corresponding pressure spring (312).

7. The foundation pit support steel shotcrete and steel enclose purlin connection structure of claim 6, characterized in that: deflector (5) rotate with butt plate (32) and are connected, and deflector (5) are kept away from butt plate (32) one end and all are provided with installed part (6), rotate when the level when deflector (5) installed part (6) fixed mounting is on steel shotcrete (2).

8. A foundation pit support steel support and steel purlin connection structure according to any one of claims 3 or 7, characterized in that: the two ends of the steel support (2) are respectively provided with a guy cable (7), and the guy cables (7) are arranged on one side of the steel support (2) departing from the ground; one end of the stay cable (7) far away from the steel support (2) is arranged on the side wall (12) of the deep foundation pit above the steel purlin (1), and the stay cable (7) is obliquely arranged.

9. The foundation pit support steel shotcrete and steel purlin connection structure of claim 8, characterized in that: the cable (7) is provided with a tensioning piece (11), and the tensioning piece (11) tensions the cable (7).

10. The foundation pit support steel shotcrete and steel purlin connection structure of claim 9, characterized in that: a triangular bracket (8) is arranged on one side, away from the inhaul cable (7), of the steel purlin (1), and the triangular bracket (8) comprises an installation rod (81), a bearing rod (82) and a support rod (83); the mounting rod (81) is attached to the side wall (12) of the deep foundation pit along the vertical direction and mounted on the side wall (12) of the deep foundation pit, and the bearing rod (82) is perpendicular to the side wall (12) of the deep foundation pit and arranged on one side, away from the ground, of the mounting rod (81); bearing bar (82) are including dead lever (821) and slide bar (822), dead lever (821) one end sets up on erection rod (81), slide bar (822) slide and set up in dead lever (821) and keep away from erection rod (81) one end, slide bar (822) slide along the horizontal direction, slide bar (822) keep away from dead lever (821) one end and rotate and be provided with bracing piece (83), bracing piece (83) keep away from slide bar (822) one end and slide and rotate and set up in erection rod (81), bracing piece (83) slide along erection rod (81) vertical direction.

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