Supporting component for deep foundation pit supporting structure

Abstract

The utility model discloses a supporting component for a deep foundation pit supporting structure, which comprises an anchoring mechanism, a supporting mechanism and a supporting mechanism, the anchoring mechanism comprises transverse anchoring holes which are drilled on a foundation pit slope side by side according to the height, and anchoring steel bars are respectively inserted into the transverse anchoring holes; the anchoring mechanism comprises limiting holes which are longitudinally formed in a rock-soil body on the inner side of the foundation pit slope side by side, and corresponding anchoring pile pieces are fixedly inserted into the limiting holes respectively; the traction mechanism comprises a fixed wedge block fixedly welded to the inner side of the anchoring steel bar, the outer side face of the fixed wedge block is arranged in a slope shape, and a jacking wedge block matched with the fixed wedge block is fixedly welded to the anchoring pile piece; and in the descending process of the anchoring pile piece, the jacking wedge blocks drive the anchoring steel bars to move inwards so as to drive the anchoring steel bars to anchor the reinforcing mesh inwards. According to the utility model, the supporting stability of the reinforcing mesh for fixing the foundation pit slope can be effectively improved, so that the supporting stability of the deep foundation pit slope is effectively ensured.

Description

Technical Field

[0001] The utility model relates to a partial component of a supporting structure for foundation pit construction, specifically to a supporting component for a deep foundation pit supporting structure, which can stably pull and fix a steel mesh used for fixing a foundation pit slope to improve the supporting effect on the steel mesh. Background Technique

[0002] Deep foundation pit support refers to measures for retaining, strengthening and protecting the side walls of deep foundation pits and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. At present, the commonly used supporting structures for deep foundation pits mainly include diaphragm walls, channel steel sheet piles, row piles, anchor support, soil nailing walls, etc.

[0003] Among them, the soil nailing wall has the advantages of being stable and reliable, simple in construction, short in construction period, good in effect and good in economy, so it has been widely used in areas with good soil quality. The existing soil nailing wall supporting structure mainly includes a supporting component embedded in the soil body of the foundation pit slope and a steel mesh fixed by the supporting component. Under the supporting and fixing action of the supporting component, the steel mesh is effectively and stably attached to the foundation pit slope, so as to fix the foundation pit slope to prevent it from collapsing. At present, most of the supporting components used in the soil nailing wall supporting structure include anchor bars and concrete columns for fixing the anchor bars in the soil body of the foundation pit slope. Although such a supporting component for the supporting structure can ensure the fixing effect on the steel mesh to a certain extent, its supporting stability is relatively limited. In some areas with poor soil quality, the concrete columns and the soil body of the foundation pit slope often become loose, resulting in the supporting stability of the steel mesh not meeting the design requirements.

[0004] Therefore, the research purpose of the utility model is to design a supporting component for a deep foundation pit supporting structure that can effectively improve the supporting stability of the steel mesh for fixing the foundation pit slope, so as to effectively ensure the supporting stability of the deep foundation pit slope. Summary of the Invention

[0005] Aiming at the technical problems existing in the above-mentioned prior art, the utility model provides a supporting component for a deep foundation pit supporting structure, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is as follows:

[0007] A supporting component for a deep foundation pit supporting structure, comprising:

[0008] An anchoring mechanism, including horizontal anchoring holes drilled side by side from high to low on the foundation pit slope, and anchor bars for fixing a steel mesh for fixing the foundation pit slope are respectively inserted into the horizontal anchoring holes;

[0009] The anchoring mechanism includes limiting holes longitudinally arranged side by side in the rock and soil inside the foundation pit slope. The aperture of the limiting hole is smaller than that of the transverse anchoring hole, and the limiting hole penetrates through the middle of the same row of the transverse anchoring holes. Corresponding anchoring pile members are respectively fixedly inserted into the limiting holes, and a clamping groove for clamping the anchoring steel bars is arranged in the middle of the anchoring pile members.

[0010] The pulling mechanism includes fixed wedges fixedly welded to the inner side of the anchoring steel bars. The outer side surface of the fixed wedge is arranged in an inclined shape. A pressing wedge adapted to the fixed wedge is fixedly welded on the anchoring pile member. A guide hole communicating with the clamping groove of the anchoring pile member is arranged in the middle of the pressing wedge. Through the cooperation of the clamping groove, the guide hole and the anchoring steel bars, the anchoring pile member is inserted into the limiting hole. During the downward movement of the anchoring pile member, the pressing wedge drives the anchoring steel bars to move inwards to drive the anchoring steel bars to tightly anchor the steel mesh inwards.

[0011] Corresponding cement slurry filling layers are respectively filled and pressurized in the transverse anchoring holes and the limiting holes.

[0012] A group of arc-shaped bottom plates are respectively fixedly connected to the bottoms of the anchoring steel bars through corresponding connecting rods. The bottom surfaces of the group of arc-shaped bottom plates respectively abut against the bottoms of the transverse anchoring holes on both sides of the limiting hole.

[0013] Guide convex edges are respectively turned upwards at the rear ends of the group of arc-shaped bottom plates.

[0014] A number of corresponding abutting spheres are rollingly installed on the side surface of the pressing wedge opposite to the fixed wedge, and the end parts of the abutting spheres respectively rollingly abut against the end surfaces of the fixed wedge.

[0015] Guide grooves for guiding the abutting spheres are arranged on the end surfaces of the fixed wedge, and the upper ends of the guide grooves are respectively arranged in an open shape.

[0016] The outer end of the anchoring pile member abuts against the outer end of the limiting hole.

[0017] Between two adjacent upper and lower fixed wedges, the outer end of the upper fixed wedge is arranged inside the outer end of the lower fixed wedge.

[0018] Advantages of the present utility model:

[0019] 1) The utility model cooperates with the anchoring steel bars through the clamping groove and the guide hole, and inserts the anchoring pile member into the limiting hole. In this process, through the way of wedge block pushing cooperation, that is, the tightening wedge block fixed on the anchoring pile member pushes the fixed wedge block fixed on the inner side of the anchoring steel bar, so as to not only significantly improve the self-installation stability of the anchoring steel bar, but also pull and press the whole steel bar mesh tightly on the surface of the foundation pit slope, so as to greatly improve the support stability of the steel bar mesh for fixing the foundation pit slope by the utility model, and further effectively ensure the support stability of the deep foundation pit slope.

[0020] 2) Through the intervention of a group of arc-shaped bottom plates, the utility model raises the corresponding position of the anchoring steel bar, so that when the anchoring pile member is inserted downward into the limiting hole, that is, when the tightening wedge block forms a blocking push on the fixed wedge block, the anchoring steel bar will not directly embed into the bottom of the transverse anchoring hole, thus ensuring that the tightening wedge block can smoothly form a blocking push on the fixed wedge block during the downward process.

[0021] 3) The tightening wedge block of the utility model is rotatably installed with abutting spheres on the side surface opposite to the fixed wedge block, so as to reduce the friction force when the tightening wedge block pushes the fixed wedge block, and improve the construction convenience of the utility model; on this basis, the utility model further turns up and sets guiding convex edges at the rear ends of a group of arc-shaped bottom plates respectively, so as to form a lifting effect during the inward movement of the fixed wedge block and the anchoring steel bar, so as to further prevent the position of the anchoring steel bar from collapsing excessively, and thus effectively control the height of the anchoring steel bar reasonably.

[0022] 4) The end surface of the fixed wedge block of the utility model is provided with a guide groove for guiding the abutting spheres. Under the action of the guide groove, the abutting spheres are transversely limited, so as to effectively control the transverse position of the anchoring steel bar reasonably, and ensure that the insertion position of the anchoring steel bar does not deviate excessively.

[0023] 5) The utility model further arranges the outer end of the upper fixed wedge block inside the outer end of the lower fixed wedge block, so that the tightening wedge block will not push the fixed wedge block as a whole one by one during the downward movement, thus ensuring that the tightening wedge block can respectively form an inward tightening on the corresponding fixed wedge block, and further pulling and pressing the whole steel bar mesh tightly on the surface of the foundation pit slope, so as to greatly improve the overall structural stability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the utility model.

[0025] Figure 2 is a use state diagram of the utility model.

[0026] Figure 3 is Figure 1Partial enlarged view of part A in

[0027] Figure 4 is Figure 1 Partial enlarged view of part B in

[0028] In the drawings: the anchoring mechanism 1, the transverse anchoring holes 101, the anchoring steel bars 102, the foundation pit slope 2, the steel bar mesh 3, the anchoring mechanism 4, the limiting holes 401, the anchoring pile members 402, the pulling mechanism 5, the fixing wedge blocks 501, the pressing wedge blocks 502, the cement slurry filling layer 6, the connecting rod members 7, the arc-shaped bottom plate 8, the guiding convex edge 801, the abutting spheres 9, the guiding grooves 10. Specific implementation manners

[0029] For the convenience of those skilled in the art to understand, the embodiments will now be further described in detail with reference to the drawings for the structure of the present utility model:

[0030] Referring to Figures 1-4 , a support member for a deep foundation pit support structure, comprising:

[0031] The anchoring mechanism 1 includes transverse anchoring holes 101 drilled side by side in height on the foundation pit slope 2, and the transverse anchoring holes 101 are respectively inserted with anchoring steel bars 102 for fixing the steel bar mesh 3 for fixing the foundation pit slope;

[0032] The anchoring mechanism 4 includes limiting holes 401 arranged longitudinally side by side in the rock and soil inside the foundation pit slope 2. The aperture of the limiting holes 401 is smaller than the aperture of the transverse anchoring holes 101, and the limiting holes 401 penetrate through the middle of the same row of the transverse anchoring holes 101. The limiting holes 401 are respectively fixedly inserted with corresponding anchoring pile members 402, and a clamping groove for clamping the anchoring steel bars 102 is arranged in the middle of the anchoring pile members 402;

[0033] The pulling mechanism 5 includes fixing wedges 501 fixedly welded to the inner sides of the anchoring steel bars 102. The outer side surfaces of the fixing wedges 501 are arranged in an inclined shape. Pressing wedges 502 adapted to the fixing wedges 501 are fixedly welded to the anchoring pile members 402. A guiding hole communicating with the clamping groove of the anchoring pile members 402 is arranged in the middle of the pressing wedges 502; through the cooperation of the clamping groove, the guiding hole and the anchoring steel bars 102, the anchoring pile members 402 are inserted into the limiting holes 401. During the downward movement of the anchoring pile members 402, the pressing wedges 502 drive the anchoring steel bars 102 to move inwards, so as to drive the anchoring steel bars 102 to tightly anchor the steel bar mesh 3 inwards. The transverse anchoring holes 101 and the limiting holes 401 are respectively filled with corresponding cement slurry filling layers 6 under increased pressure.

[0034] The utility model cooperates with the anchoring steel bars 102 through the clamping grooves and guide holes, and inserts the anchor tightening pile member 402 into the limiting hole 401. In this process, through the way of wedge block pushing cooperation, that is, the tightening wedge block 502 fixed on the anchor tightening pile member 402 pushes the fixed wedge block 501 fixed on the inner side of the anchoring steel bar 102, so as to not only significantly improve the self-installation stability of the anchoring steel bar 102, but also pull and press the overall steel bar mesh 3 tightly on the surface of the foundation pit slope 2, so as to greatly improve the support stability of the steel bar mesh 3 for fixing the foundation pit slope by the utility model, and further effectively ensure the support stability of the deep foundation pit slope.

[0035] A group of arc-shaped bottom plates 8 are respectively fixed at the bottom of the anchoring steel bar 102 through corresponding connecting rods 7, and the bottom surfaces of the group of arc-shaped bottom plates 8 respectively abut against the bottoms of the transverse anchoring holes 101 on both sides of the limiting hole 401.

[0036] Through the intervention of the group of arc-shaped bottom plates 8, the corresponding position of the anchoring steel bar 102 is lifted, so that when the anchor tightening pile member 402 is inserted downward into the limiting hole 401, that is, when the tightening wedge block 502 forms a blocking push on the fixed wedge block 501, the anchoring steel bar 102 will not directly embed into the bottom of the transverse anchoring hole 101, thus ensuring that the tightening wedge block 502 can smoothly form a blocking push on the fixed wedge block 501 during the downward process.

[0037] Guide convex edges 801 are respectively turned up at the rear ends of the group of arc-shaped bottom plates 8. A number of corresponding abutting spheres 9 are rotatably installed on the side surface of the tightening wedge block 502 opposite to the fixed wedge block 501, and the ends of the abutting spheres 9 respectively roll and abut against the end surface of the fixed wedge block 501.

[0038] The abutting spheres 9 are rotatably installed on the side surface of the tightening wedge block 502 opposite to the fixed wedge block 501, so as to reduce the friction force when the tightening wedge block 502 pushes the fixed wedge block 501, and improve the construction convenience of the utility model; on this basis, the utility model further turns up the rear ends of the group of arc-shaped bottom plates 8 to form guide convex edges 801 respectively, so as to form a lifting effect during the inward movement of the fixed wedge block 501 and the anchoring steel bar 102, so as to further prevent the position of the anchoring steel bar 102 from sagging excessively, and effectively control the height of the anchoring steel bar 102 reasonably.

[0039] Guide grooves 10 for guiding the abutting spheres 9 are arranged on the end surface of the fixed wedge block 501, and the upper ends of the guide grooves 10 are respectively arranged in an open shape. Under the action of the guide grooves 10, the abutting spheres 9 are laterally limited, so as to effectively control the lateral position of the anchoring steel bar 102 reasonably, and ensure that the insertion position of the anchoring steel bar 102 does not deviate excessively.

[0040] The outer end of the anchor pile member 402 abuts against the outer end of the limit hole 401. Between two adjacent fixing wedges 501 above and below, the outer end of the upper fixing wedge 501 is arranged inside the outer end of the lower fixing wedge 501, so that the jacking wedge 502 does not form a jacking force on the fixing wedges 501 one by one during the downward movement, thereby ensuring that the jacking wedge 501 can respectively form an inward jacking force on the corresponding fixing wedges 501, and further pulling and pressing the steel mesh 3 tightly on the surface of the foundation pit slope 2, so as to greatly improve the overall structural stability of the present utility model.

[0041] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A support component for a deep foundation pit support structure, characterized in that, Including: An anchoring mechanism (1), which includes horizontal anchoring holes (101) drilled side by side in the foundation pit slope (2) from high to low, and anchoring steel bars (102) are respectively inserted into the horizontal anchoring holes (101) for fixing a steel bar mesh (3) used for fixing the foundation pit slope; An anchoring and tightening mechanism (4), which includes limiting holes (401) arranged longitudinally side by side in the rock and soil inside the foundation pit slope (2). The aperture of the limiting holes (401) is smaller than that of the horizontal anchoring holes (101), and the limiting holes (401) penetrate through the middle of the same row of the horizontal anchoring holes (101). Corresponding anchoring and tightening piles (402) are respectively fixedly inserted into the limiting holes (401), and a clamping groove for clamping the anchoring steel bar (102) is arranged in the middle of the anchoring and tightening pile (402); A pulling mechanism (5), which includes a fixed wedge block (501) fixedly welded to the inner side of the anchoring steel bar (102). The outer side surface of the fixed wedge block (501) is arranged in an inclined shape. A top - tightening wedge block (502) adapted to the fixed wedge block (501) is fixedly welded on the anchoring and tightening pile (402). A guide hole communicating with the clamping groove of the anchoring and tightening pile (402) is arranged in the middle of the top - tightening wedge block (502). Through the cooperation of the clamping groove, the guide hole and the anchoring steel bar (102), the anchoring and tightening pile (402) is inserted into the limiting hole (401). During the downward movement of the anchoring and tightening pile (402), the top - tightening wedge block (502) drives the anchoring steel bar (102) to move inwards to drive the anchoring steel bar (102) to tightly anchor the steel bar mesh (3) inwards.

2. The support member for a deep foundation pit support structure according to claim 1, characterized in that, Corresponding cement slurry filling layers (6) are respectively filled in the horizontal anchoring holes (101) and the limiting holes (401) under increased pressure.

3. The support member for a deep foundation pit support structure according to claim 2, wherein, A group of arc - shaped bottom plates (8) are respectively fixedly connected to the bottom parts of the anchoring steel bars (102) through corresponding connecting rods (7), and the bottom surfaces of the group of arc - shaped bottom plates (8) respectively abut against the bottoms of the horizontal anchoring holes (101) on both sides of the limiting hole (401).

4. The support member for a deep foundation pit support structure according to claim 3, characterized in that, Guide ridges (801) are respectively turned upwards at the rear ends of the group of arc - shaped bottom plates (8).

5. The support member for a deep foundation pit support structure according to claim 4, characterized in that, A number of corresponding abutting spheres (9) are installed in a rolling manner on the side surface of the top - tightening wedge block (502) opposite to the fixed wedge block (501), and the end parts of the abutting spheres (9) respectively roll and abut against the end surfaces of the fixed wedge block (501).

6. The support member for a deep foundation pit support structure according to claim 5, characterized in that, Guide grooves (10) for guiding the abutting spheres (9) are arranged on the end surface of the fixed wedge block (501), and the upper ends of the guide grooves (10) are respectively arranged in an open - mouth shape.

7. A support member for a deep foundation pit support structure according to claim 1, characterized in that, The outer end of the anchoring and tightening pile (402) abuts against the outer end of the limiting hole (401).

8. The supporting component for a deep foundation pit support structure according to claim 1, characterized in that, Between two adjacent upper and lower fixed wedge blocks (501), the outer end of the upper fixed wedge block (501) is arranged inside the outer end of the lower fixed wedge block (501).

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