CN216739662U - Miniature pile combination supporting construction - Google Patents

Abstract

The utility model provides a miniature pile combined supporting structure, which relates to the technical field of foundation pit supporting systems, and adopts the following scheme: including soil layer and rock layer, the soil layer is located the top of rock layer, the soil layer is strutted through many miniature piles, the bottom of miniature pile has the spud foot, and the spud foot inserts in the rock layer, be connected with the anchor rope subassembly on the miniature pile, the rock layer upper berth has the anchor to spout the net, and the anchor spouts the net and is connected with the stock subassembly, and the stock subassembly stretches into in the rock layer. The problem of no slope space is effectively solved, the pile needs not to be inserted into the bottom of a foundation pit in the aspect of saving materials, only the pile needs to be driven into a bedrock step, the pile length is shortened, the material consumption is reduced, meanwhile, the miniature pile is small in pile type, pile driving equipment does not need to be too large, the construction period is shortened, and the influence on the environment is small.

Description

Miniature pile combination supporting construction

Technical Field

The utility model relates to the technical field of foundation pit supporting systems, in particular to a micro pile combined supporting structure.

Background

Available space in the current city tends to be tense day by day, new height and new depth are continuously impacted, the safety problem of the deep foundation pit becomes a key factor for restricting the development of underground space, the slope-laying space of the underground foundation pit engineering in the city is limited, and the requirement on a supporting structure is higher.

At present, the urban underground foundation pit engineering generally adopts traditional pile anchor support, and the pile foundation needs to be driven into the foundation pit bottom, need adopt large-scale stake, extravagant material to need adopt large-scale pile foundation equipment to be under construction, the period is long, and is inefficient, and it is big to influence ambient environment.

Therefore, in view of the current situation of the conventional pile-anchor support, it is an urgent need to solve the problem of developing a micro pile combined support structure.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a miniature pile combined supporting structure, which effectively solves the problem of no slope space, does not need to be inserted into the bottom of a foundation pit in the aspect of saving materials, only needs to be driven into bedrock steps, shortens the pile length, reduces the material consumption, and simultaneously reduces the construction period and has less influence on the environment because the pile type of a miniature pile is small and the pile driving equipment does not need to be too large.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a miniature stake combination supporting construction, includes soil layer and rock layer, and the soil layer is located the top on rock layer, the soil layer is strutted through many miniature stakes, the bottom of miniature stake has the spud foot, and the spud foot inserts in the rock layer, be connected with the anchor rope subassembly on the miniature stake, the rock layer upper berth has the anchor to spout the net, and the anchor spouts to be connected with the stock subassembly on the net, and the stock subassembly stretches into in the rock layer. The upper soil layer is supported by miniature piles, pile feet are inserted into the rock layer, and the pile feet are anchored by steel cables; the pit wall of the lower rock layer is supported by anchor spraying, the hanging net is used for spraying concrete, and meanwhile, the anchor rods are driven into the anchor rods to control the stability of the pit wall of the lower rock layer, so that the concrete is not required to be inserted into the bottom of a foundation pit, and only needs to be driven into bedrock steps, the pile length is shortened, and the material consumption is reduced; the pile type of the miniature pile is small, so that piling equipment does not need to be too large, and the construction period is shortened; simultaneously, the influence on the environment is small, the principle of a novel miniature pile supporting system is simple, the supporting effect is obvious, and the space is saved.

Furthermore, the miniature piles are connected through the top beams and the waist beams, the top beams are located above the miniature piles, and the waist beams are located in the middle of the miniature piles. The crown beam is made of profile steel and is connected with the top of the micro pile to form a whole; the waist rail is made of profile steel and is connected with the middle part of the miniature pile, so that the integrity is enhanced. The crown beam and the waist beam are connected with the micro-piles through high-strength bolts.

Furthermore, the pile foot is provided with an oblique tip section. More favorable for insertion into the rock strata.

Furthermore, the anchor cable assembly comprises a steel strand, a tray and a first anchoring head, the tray is connected with the first anchoring head through the steel strand, one end of the steel strand is fixed with the soil layer through the first anchoring head, and the other end of the steel strand is connected to the miniature pile through the tray and fixed with the miniature pile. The miniature pile is anchored through the action of the first anchoring head, the steel strand and the tray.

Further, the stock subassembly includes the body of rod, backing plate and second anchor head, and the one end of the body of rod is fixed through second anchor head and rock layer in stretching into the rock layer, and the other end and the backing plate of the body of rod are connected, and the backing plate is pressed on the anchor and is spouted the surface of net. The anchor spraying net is a hanging net. And the lower rock pit wall is supported by bolting and shotcreting, and the hanging net and the shotcrete are simultaneously driven into the anchor rod to control the stability of the lower rock pit wall.

According to the technical scheme, the utility model has the following advantages:

the utility model realizes the aim of saving materials, the traditional pile-anchor support has the advantages that the pile foundation needs to be driven into the bottom of the foundation pit, the materials are wasted, the self stability of the wall part of the rock pit is better, the pile foundation support does not need to be adopted, the stability of the pit wall of the upper soil layer is poorer, and the pile foundation support needs to be adopted, so the utility model has both the characteristics, the upper soil layer adopts the miniature pile support, the step is properly arranged on the top of the rock, the miniature pile is driven into the rock, and the pile-anchor support is collapsed; and the lower rock pit wall is supported by bolting and shotcreting, so that the supporting effect can be met. The utility model can shorten the construction period, and the construction of the miniature pile can be completed without adopting large-scale pile foundation equipment due to small volume and convenient construction, thereby effectively shortening the construction period and improving the construction efficiency. The utility model can reduce the construction space, the miniature pile is combined with the supporting structure, the slope-releasing construction is not needed, the occupied space is reduced, and the utility model is particularly suitable for supporting the urban underground foundation pit. The support has good support effect, and has good support effect on urban underground foundation pits and soil-rock combined pit walls.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a front view of an embodiment of the present invention.

Fig. 2 is a left side view of an embodiment of the present invention.

Fig. 3 is a schematic structural view of a cable bolt assembly according to an embodiment of the present invention.

FIG. 4 is a schematic view of the construction of the anchor rod assembly in accordance with an embodiment of the present invention.

In the figure, 1, a soil layer, 2, a rock layer, 3, a miniature pile, 4, an anchor spraying net, 5, an anchor rope component, 6, an anchor rod component, 7, a crown beam, 8, a waist beam, 31, a pile foot, 51, a steel strand, 52, a tray, 53, a first anchoring head, 61, a rod body, 62, a base plate, 63 and a second anchoring head.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. 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 scope of protection of this patent.

As shown in fig. 1 to 4, the present embodiment provides a micro pile 3 combined supporting structure, which includes a soil layer 1 and a rock layer 2, wherein the soil layer 1 is located above the rock layer 2, the soil layer 1 is supported by a plurality of micro piles 3, the micro piles 3 are connected by crown beams 7 and waist beams 8, the crown beams 7 are located above the micro piles 3, the waist beams 8 are located in the middle of the micro piles 3, the crown beams 7 are made of profile steel, and are connected with the tops of the micro piles 3 to form a whole; 8 shaped steel of waist rail connects 3 middle parts of micropile, increases the wholeness, and crown beam 7 and waist rail 8 are all connected with micropile 3 through high strength bolt. The bottom of the miniature pile 3 is provided with a pile foot 31, the pile foot 31 is provided with an oblique tip section, the pile foot 31 is inserted into the rock layer 2, the miniature pile 3 is connected with an anchor cable assembly 5, the rock layer 2 is paved with an anchor spraying net 4, the anchor spraying net 4 is connected with an anchor rod assembly 6, the anchor rod assembly 6 extends into the rock layer 2, the upper soil layer 1 is supported by the miniature pile 3, the pile foot 31 is inserted into the rock layer 2 and pulled by a steel cable anchor; and the pit wall of the lower rock layer 2 is supported by anchor spraying, and the hanging net is used for spraying concrete and simultaneously is driven into the anchor rod to control the stability of the pit wall of the lower rock layer 2, so that the concrete is not required to be inserted into the bottom of a foundation pit, and only needs to be driven into a bedrock step, and the pile length is shortened.

The anchor cable assembly 5 comprises a steel strand 51, a tray 52 and a first anchoring head 53, the tray 52 and the first anchoring head 53 are connected by the steel strand 51, one end of the steel strand is fixed with the soil layer 1 through the first anchoring head 53, the other end of the steel strand is connected to the micro pile 3 through the tray 52 and fixed with the micro pile 3, and the micro pile 3 is anchored through the first anchoring head 53, the steel strand 51 and the tray 52.

Wherein, stock subassembly 6 includes the body of rod 61, backing plate 62 and second anchor head 63, and the one end of the body of rod 61 is stretched into in the rock layer 2 and is fixed with rock layer 2 through second anchor head 63, and the other end and the backing plate 62 of the body of rod 61 are connected, and backing plate 62 presses on the surface of anchor spout net 4. The anchor spraying net 4 is a hanging net, the lower rock pit wall is supported by anchor spraying, and concrete is sprayed by the hanging net and simultaneously injected into an anchor rod to control the stability of the lower rock pit wall.

The terms "upper", "lower", "outside", "inside", and the like in the description and claims of the present invention and the above drawings (if any) are used for distinguishing relative positions without necessarily being construed qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a miniature stake combination supporting construction, its characterized in that includes soil layer and rock layer, and the soil layer is located the top on rock layer, the soil layer is strutted through many miniature stakes, the bottom of miniature stake has the spud foot, and the spud foot inserts in the rock layer, be connected with the anchor rope subassembly on the miniature stake, the rock layer upper berth has the anchor to spout the net, and the anchor spouts to be connected with the stock subassembly on the net, and the stock subassembly stretches into in the rock layer.

2. The micro-pile combined supporting structure according to claim 1, wherein the plurality of micro-piles are connected through a crown beam and a wale, the crown beam is positioned above the micro-piles, and the wale is positioned in the middle of the micro-piles.

3. The micro-pile combined supporting structure of claim 2, wherein the crown beam and the wale are both formed steel, and the crown beam and the wale are both connected with the micro-pile through high-strength bolts.

4. A micro-pile combined supporting structure as claimed in any one of claims 1 to 3, wherein the legs have a beveled tip cut.

5. A micropile combination supporting construction according to any one of claims 1 to 3, wherein the anchor cable assembly includes a steel strand, a tray and a first anchor head, the steel strand connecting the tray and the first anchor head, one end of the steel strand being fixed to the ground via the first anchor head, and the other end of the steel strand being connected to the micropile via the tray and fixed to the micropile.

6. A micropile combination supporting construction according to any one of claims 1 to 3, wherein the anchor assembly includes a rod body, a backing plate and a second anchoring head, one end of the rod body extends into the rock layer and is fixed to the rock layer by the second anchoring head, the other end of the rod body is connected to the backing plate, and the backing plate is pressed against the surface of the anchor grid.

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