Shallow-buried open-cut undercrossing tunnel supporting structure

Abstract

The utility model discloses a shallow-buried open-cut undercrossing tunnel supporting structure, belongs to the technical field of supporting structures, and solves the problem of low construction efficiency caused by high difficulty in positioning or / and fixing a hanging net in a supporting structure in the prior art. The device comprises a fender post and a hanging net, and further comprises a fixing structure which is arranged on the fender post and used for positioning and fixing the hanging net. The fixing structure comprises a hoop arranged on the fender post, at least one connecting rod attached to or parallel to the fender post is arranged on the hoop, and a plurality of pressing structures for hanging the hanging nets and pressing the hanging nets or fixing points are arranged on the connecting rod in the length direction of the connecting rod. The utility model is used for shallow-buried open-cut undercrossing tunnel support.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shallow-buried open-cut underpass supporting structure for shallow-buried open-cut underpass supporting and belongs to the technical field of supporting structures. BACKGROUND

[0002] In recent years, with the rapid development of economy and the acceleration of urbanization process, the urban traffic volume increases dramatically, and the urban land is highly utilized. Underground traffic engineering emerges in large numbers as an important traffic form to solve urban traffic congestion. Compared with the past, the recent newly-built projects are not only huge in scale, but also often need to underpass a large number of existing structures, and the construction technology is more complex.

[0003] The existing building structures include high-rise buildings, railways, highway lines, etc., and the shallow-buried open-cut underpass is built under the existing building structures. In the city, the construction of the underpass is often complex due to the narrow construction site, harsh construction environment, strict control of ground settlement, etc.

[0004] During the construction of the underpass across the existing road, the supporting system is an important link to ensure the safety of the tunnel construction. The existing technology often adopts the ways of driving support piles and hanging nets and spraying to support during the construction, and the hanging net is usually hung between the positions between two support piles and hung on the entire excavation side. The hung net is nailed on the slope surface or the support pile, but there are the following technical problems:

[0005] 1. The positioning and / or fixing of the hanging net is difficult, thereby causing the problem of low construction efficiency;

[0006] 2. The fixing point of the hanging net is easy to loosen, thereby easily leading to the decline of the overall stability of the hanging net. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a shallow-buried open-cut underpass supporting structure to solve the problem of low construction efficiency caused by the difficulty of positioning and / or fixing of the hanging net in the existing supporting structure.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0009] A shallow-buried open-cut underpass supporting structure comprises a support pile and a hanging net, and comprises a fixing structure for positioning and fixing the hanging net on the support pile;

[0010] The fixing structure comprises a clamp arranged on the support pile, at least one connecting rod which is in close contact with or parallel to the support pile is arranged on the clamp, and a plurality of pressing structures for hanging and pressing the hanging net or fixing points are arranged on the connecting rod along the length direction of the connecting rod.

[0011] Further, the pressing structure comprises an L-shaped hanging piece arranged on the connecting rod for hanging the hanging net, the L-shaped hanging piece comprises a horizontal rod perpendicular to the connecting rod and a vertical rod connected with the horizontal rod, a rotating piece arranged on the bottom of the horizontal rod, and a pressing piece for pressing the hanging net or the fixing point in cooperation with the rotating piece.

[0012] Further, the rotating piece comprises a screw rod arranged on the bottom of the horizontal rod, a rotating shaft sleeve movably sleeved on the screw rod, and a nut for limiting and fixing the rotating shaft sleeve in cooperation with the screw rod, the screw rod is provided with threads on opposite sides of the horizontal rod, and the screw rod is parallel to the connecting rod.

[0013] Further, the pressing piece is a pressing rod connected with the rotating shaft sleeve.

[0014] Further, the pressing rod and the vertical rod are telescopic rods.

[0015] Further, the connecting rod comprises multiple segment rods, the adjacent segment rods are matched, a U-shaped groove is arranged on one segment rod, a protruding block matched with the U-shaped groove is arranged on the other segment rod, the U-shaped groove and the protruding block are provided with mounting holes matched with the bolt and the nut, and at least one pressing structure is arranged on each segment rod.

[0016] Further, one side of the top of the fender pile is a reverse T-shaped structure for limiting the hoop.

[0017] Further, the inner wall of the hoop is provided with a rubber pad.

[0018] Compared with the prior art, the advantages of the utility model lie in that:

[0019] Firstly, the utility model sets the fixing structure on the fender pile, fixes the pressing structure on the connecting rod along the length direction of the fender pile through the hoop in the fixing structure, and after fixing, the hanging net hung between the two fender piles or the hanging net hung on the whole excavation side is hung and pressed and fixed through multiple pressing structures, so that the hanging net can be accurately and quickly positioned and / or fixed, the hanging net is ensured to be consistent with the design position, the construction quality and the construction efficiency are improved, the hanging net can be pressed to reduce the stress of the fixing point or the fixing point on the slope surface is pressed to increase the stress intensity of the fixing point, the problem that the hanging net is not fixed firmly or the fixing point is easy to loosen is reduced, and the overall stability of the hanging net is improved.

[0020] The L-shaped hanging piece in the pressing structure is convenient for preliminary hanging and positioning of the hanging net by passing through the net holes, and through the cooperation of the pressing piece and the rotating piece, the hanging net or the fixing point is fixed again, which not only can flexibly adjust the tension of the hanging net and meet the needs under different construction conditions, but also can reduce the loosening of the hanging net caused by vibration or external force in the construction process through the direct contact and pressing of the pressing piece and the hanging net or the fixing point, and the overall fixing stability is improved;

[0021] The rotating piece is in rotating cooperation with the screw rod through the rotating shaft sleeve, the position of the pressing piece can be adjusted, the pressing force of the pressing piece on the hanging net or the fixing point is adjusted, the screw nut and the screw rod are cooperated to fix the rotating shaft sleeve, and the rotating shaft sleeve is prevented from rotating when the pressing piece applies the pressing force to the hanging net and the fixing point;

[0022] The pressing rod and the vertical rod are telescopic rods, the purpose is to prevent the hanging net from sliding away from the vertical rod, and the pressing rod can increase the pressing points or the pressing area according to the needs;

[0023] The connecting rod is composed of multiple sections of rods, the modularity is realized, the length of the connecting rod can be adjusted according to the actual construction needs, the flexibility of construction is improved, the U-shaped groove and the protrusion are cooperated and fixed through the bolt and the nut, and the adjacent sections of rods can be quickly docked and fixed;

[0024] The top side of the fender pile is the inverted T-shaped structure for limiting the holding hoop, the installation position accuracy of the holding hoop on the fender pile is ensured, and the problem that the holding hoop is prone to sliding downward under stress is avoided, so that the stability of the subsequent hanging net is ensured;

[0025] The rubber pad can increase the friction coefficient between the holding hoop and the fender pile, and can prevent the fender pile from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0027] Figure 1 It is the structure diagram of the structure that the fixing structure is arranged on the fender pile in the utility model;

[0028] Figure 2 It is the structure diagram of the fixing structure in the utility model;

[0029] Figure 3The structure diagram of the pressing structure arranged on the middle section rod of the utility model;

[0030] Figure 4 The structure diagram of the pressing structure of the utility model;

[0031] Figure 5 The partial sectional view of the utility model, a pressing piece is arranged on the rotating piece;

[0032] Figure 6 The partial schematic view of the utility model;

[0033] In the drawing: 1-protecting pile, 2-fixing structure, 3-hoop, 4-connecting rod, 5-pressing structure, 6-L-shaped hanging piece, 7-cross rod, 8-vertical rod, 9-rotating piece, 10-pressing piece, 12-bolt shaft piece, 13-rotating shaft sleeve, 14-nut, 15-section rod, 16-U-shaped groove, 17-protruding block, 18-mounting hole, 19-inverted T-shaped structure, 20-rubber pad. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of the utility model, it should be explained that, if the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship when the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0037] In addition, if the terms "first", "second", "third" and the like appear, they are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, if the terms "horizontal", "vertical", "suspended" and the like appear, it does not mean that the component must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of the present application, it should be explained that, unless otherwise specified and limited, if the terms "set", "install", "connect", "connect" and the like appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0041] Embodiment 1

[0042] In order to solve the problem that the positioning and / or fixing of the hanging net in the supporting structure in the prior art is difficult, thereby causing low construction efficiency. As shown in Figures 1-6 A shallow-buried open-cut tunnel supporting structure is provided, which comprises a support pile 1 and a hanging net (which is existing and not shown in the figure), and comprises a fixing structure 2 arranged on the support pile 1 for positioning and fixing the hanging net. The fixing structure 2 comprises a hoop 3 arranged on the support pile 1, at least one connecting rod 4 being arranged on the hoop 3 and being in contact with or parallel to the support pile 1, and a plurality of pressing structures 5 being arranged on the connecting rod 4 for hanging and pressing the hanging net or fixing points.

[0043] In practice, before the shallow buried open cut tunneling, the support piles are installed at the designated positions. After the installation of the support piles, the open cut is carried out. When the hanging net needs to be hung, the hoop 3 is fixed on the support pile 1, and the pressing structure 5 on the connecting rod is adjusted to be at the designated position along the circumference of the support pile 1, so as to hang and press the hanging net or press the fixing point (i.e. some positions are provided with structures for fixing the hanging net, which are pressed by the pressing structure). After the hanging net is hung, the concrete is sprayed or other construction process operations are carried out. In this embodiment, the fixing structure is arranged on the support pile, the pressing structure on the connecting rod is fixed along the length direction of the support pile by the hoop in the fixing structure, and after the fixing, the hanging net hung between the two support piles or the hanging net hung on the whole excavation side is hung and fixed by the multiple pressing structures. The hanging net can be accurately and quickly positioned and / or fixed, the hanging net is ensured to be consistent with the design position, the construction quality and efficiency are improved, the hanging net can be pressed to reduce the stress of the fixing point or the fixing point on the slope surface is pressed to increase the stress intensity of the fixing point, the problem of unstable hanging net or loose fixing point is reduced, and the overall stability of the hanging net is improved.

[0044] Embodiment 2

[0045] On the basis of the embodiment 1, the pressing structure 5 comprises an L-shaped hanging piece 6 arranged on the connecting rod 4 for hanging the hanging net, the L-shaped hanging piece 6 comprises a horizontal rod 7 perpendicular to the connecting rod 4 and a vertical rod 8 connected with the horizontal rod 7, a rotating piece 9 arranged on the bottom of the horizontal rod 7, and a pressing piece 10 for pressing the hanging net or the fixing point in cooperation with the rotating of the rotating piece 9.

[0046] In practice, after the pressing structure is fixed, according to the hanging requirement of the hanging net, the L-shaped hanging piece 6, the rotating piece 9 and the pressing piece 10 are passed through the mesh of the hanging net, the hanging net is placed on the horizontal rod 7, the hanging net is separated from the limiting by the vertical rod 8, the hanging net is hung on all the L-shaped hanging pieces 6 on the connecting rod, and the pressing piece 10 is pressed in cooperation with the rotating of the rotating piece 9 to press the hanging net or the fixing point. The L-shaped hanging piece in the pressing structure in this embodiment is convenient for passing through the mesh of the hanging net to preliminarily hang and position the hanging net, and the second fixing of the hanging net or the fixing point is carried out in cooperation with the rotating of the rotating piece, which can flexibly adjust the tension of the hanging net to meet the requirements under different construction conditions, can directly contact and press the hanging net or the fixing point (i.e. the position of the structure nailed into the slope surface, which can hook the conical rod of the hanging net) to reduce the loosening of the hanging net caused by vibration or external force in the construction process, and improve the overall fixing stability.

[0047] Embodiment 3

[0048] On the basis of embodiment 2, the rotating member 9 comprises a screw rod 12 arranged on the bottom of the horizontal rod 7, a rotating shaft sleeve 13 movably arranged on the screw rod 12, and a nut 14 cooperating with the screw rod 12 to limit and fix the rotating shaft sleeve 13. The screw rod 12 is arranged with threads on opposite sides of the horizontal rod 7 and is parallel to the connecting rod 4. On one side of the horizontal plate, the screw rod can also be adjusted in the longitudinal position of the pressing member by increasing or decreasing the gaskets.

[0049] In practice, when the hanging net is hung on the L-shaped hanging member, the rotating member 9 and the pressing member 10 have passed through the hanging hole of the hanging net and are placed outside the hanging net. When the hanging net needs to be pressed by the pressing member, the rotating shaft sleeve is rotated in cooperation with the screw rod, so that the pressing member reaches the designated pressing position. Then, the nut is fixed in cooperation with the threaded section of the screw rod to fix the rotating shaft sleeve, so that the pressing member can press. In this embodiment, the rotating member is adjusted in position by rotating cooperation with the screw rod through the rotating shaft sleeve, which is beneficial to adjusting the pressing force of the pressing member on the hanging net or the fixing point. The cooperation between the nut and the screw rod is beneficial to fixing the rotating shaft sleeve to prevent the rotating shaft sleeve from rotating when the pressing member applies pressing force to the hanging net and the fixing point. In practice, threads can be arranged on the length direction of the screw rod, but no internal threads can be arranged on the rotating shaft sleeve 13.

[0050] Embodiment 4

[0051] On the basis of embodiment 3, the pressing member 10 is a pressing rod connected with the rotating shaft sleeve 13. In practice, other structures are not excluded. The pressing rod and the vertical rod 8 are telescopic rods, which can prevent the hanging net from sliding away from the vertical rod. The pressing rod can increase the pressing points or the pressing area according to the needs.

[0052] Embodiment 5

[0053] On the basis of embodiment 4, the connecting rod 4 comprises multiple section rods 15. On the cooperation part of adjacent section rods 15, a U-shaped groove 16 is arranged on one section rod 15, a protrusion 17 is arranged on the other section rod 15, and mounting holes 18 cooperating with the screw and nut are arranged on the U-shaped groove 16 and the protrusion 17. At least one pressing structure 5 is arranged on each section rod 15. The connecting rod is composed of multiple section rods, which realizes modularization, is convenient for adjusting the length of the connecting rod according to the actual construction needs, and increases the flexibility of construction. The cooperation between the U-shaped groove and the protrusion is fixed by the screw and the nut, so that the adjacent section rods can be quickly connected and fixed. Of course, in practice, other ways of connecting two section rods are not excluded. The arrangement position of the pressing structure on the section rod 15 is arranged according to the actual needs.

[0054] Embodiment 6

[0055] On the basis of embodiment 5, the top side of the fender pile 1 is a reverse T-shaped structure 19 for limiting the holding hoop 3, which not only ensures the accuracy of the installation position of the holding hoop on the fender pile, but also avoids the problem that the holding hoop is easy to slide downward under stress, so as to ensure the stability of the subsequent net hanging.

[0056] Embodiment 7

[0057] On the basis of embodiment 6, the inner wall of the holding hoop 3 is provided with a rubber pad 20, which can increase the friction coefficient between the holding hoop and the fender pile, and at the same time can prevent damage to the fender pile.

Claims

1. A shallow tunneling underpass support structure comprising a retaining pile (1) and a hanging net, characterized in that: The fixing structure (2) is arranged on the enclosure pile (1) to position and fix the hanging net. The fixing structure (2) comprises a hoop (3) arranged on the enclosure pile (1), and at least one connecting rod (4) arranged on the hoop (3) and in parallel with the enclosure pile (1), and a plurality of pressing structures (5) arranged on the connecting rod (4) and used for hanging and pressing the hanging net or fixing points.

2. A shallow tunneling tunneling structure according to claim 1, characterized in that: The pressing structure (5) comprises an L-shaped hanging piece (6) arranged on the connecting rod (4) and used for hanging the hanging net, the L-shaped hanging piece (6) comprising a horizontal rod (7) perpendicular to the connecting rod (4), a vertical rod (8) connected with the horizontal rod (7), a rotating piece (9) arranged on the bottom of the horizontal rod (7), and a pressing piece (10) used for pressing the hanging net or fixing points in cooperation with the rotating piece (9).

3. A shallow tunneling tunneling structure according to claim 2, wherein: The rotating piece (9) comprises a screw rod (12) arranged on the bottom of the horizontal rod (7), a rotating shaft sleeve (13) movably sleeved on the screw rod (12), and a nut (14) used for limiting and fixing the rotating shaft sleeve (13) in cooperation with the screw rod (12), the screw rod (12) being provided with threads on opposite sides of the horizontal rod (7) and being parallel to the connecting rod (4).

4. A shallow tunneling tunneling structure according to claim 3, wherein: The pressing piece (10) is a pressing rod connected with the rotating shaft sleeve (13).

5. A shallow tunneling tunneling structure according to claim 4, wherein: The pressing rod and the vertical rod (8) are telescopic rods.

6. A shallow tunneling tunneling structure according to any one of claims 1-5, characterized in that: The connecting rod (4) comprises a plurality of section rods (15), the section rods (15) being provided with a U-shaped groove (16) on one section rod (15) and a protrusion (17) on another section rod (15) at a position where the section rods (15) are matched with each other, the U-shaped groove (16) and the protrusion (17) being provided with mounting holes (18) matched with bolts and nuts, and at least one pressing structure (5) being arranged on each section rod (15).

7. A shallow tunneling tunneling structure according to claim 1, wherein: The top side of the enclosure pile (1) is provided with a reverse T-shaped structure (19) used for limiting the hoop (3).

8. A shallow tunneling tunneling structure according to claim 1, wherein: The inner wall of the hoop (3) is provided with a rubber pad (20).

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