Anti-rockfall structure at joint of bridge and tunnel

Abstract

The utility model relates to an anti-rockfall structure at the joint of a bridge and a tunnel, which comprises two vertical wall structures, each vertical wall structure comprises a plurality of vertical wall units which are sequentially connected, each vertical wall unit is provided with two vertical vertical wall notches at intervals, and a connecting rib component is arranged in the vertical wall notches of two adjacent vertical wall units in a penetrating manner so as to connect and fix the two vertical wall units; the arch wall structure is arranged on the two vertical wall structures, the section of the arch wall structure is in an arch shape, the arch wall structure comprises a plurality of arch wall units connected in sequence, each arch wall unit comprises two symmetrically-arranged arch wall components, the two ends of each arch wall component are fixedly arranged at the tops of the vertical wall units through inserting structures, and the two sides of each arch wall component are each provided with two arch wall notches along the arch outline of the arch wall component. Connecting rib components are arranged in the arch wall notches of the adjacent three sets of arch wall components in a penetrating mode so that the three sets of arch wall components can be connected and fixed. And the vertical wall notches are communicated with the arch wall notches so as to guide rainwater. According to the anti-rockfall structure, the pouring and solidification processes are reduced, and rapid assembling and building are completed through the prefabricated slabs.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge falling rock prevention equipment field, concretely is a bridge tunnel connecting place falling rock prevention structure. BACKGROUND

[0002] When building a tunnel in mountainous area, the two ends of the tunnel are often connected with bridge structure, in order to prevent the falling rocks on the mountain from falling along the mountain body to the bridge, it is necessary to set up falling rock prevention structure in the bridge section close to the mountain body. The existing falling rock prevention structure refers to the falling rock prevention reinforced concrete open cut structure with the application number of 2012101821849, which is mostly made of integrally formed reinforced concrete structure, obtained by cooperation of trolley formwork and pouring, and needs to wait for solidification after pouring, so the construction period is long, which is not conducive to rapid opening to traffic. CONTENT OF UTILITY MODEL

[0003] The utility model solves the technical problem to provide a kind of falling rock prevention structure, which is reduced pouring and solidification process, and the prefabricated board is used to complete the rapid assembly and erection of falling rock prevention structure, to achieve the purpose of rapid opening to traffic of bridge tunnel connecting place falling rock prevention structure.

[0004] To solve the above problems, the technical scheme adopted by the utility model is as follows:

[0005] A bridge tunnel connecting place falling rock prevention structure comprises:

[0006] Two vertical wall structures symmetrically arranged on the bridge deck structure, the vertical wall structure comprises a plurality of vertical wall units connected in sequence, two vertical vertical wall slots are provided between the vertical wall units, and a connecting rib member is arranged in the vertical wall slots of two adjacent vertical wall units to connect and fix the two vertical wall units.

[0007] An arch wall structure with an arch-shaped cross section is arranged on the two vertical wall structures, and comprises a plurality of arch wall units connected in sequence, the arch wall unit comprises two symmetrically arranged arch wall members, the two ends of the arch wall member are fixedly arranged on the top of the vertical wall unit through the insertion structure, two arch wall slots are formed on the two sides of the arch wall member along the arch-shaped contour, and the arch wall slots of three adjacent groups of arch wall members are arranged in the connecting rib member to connect and fix the three groups of arch wall members; the vertical wall slot and the arch wall slot are connected to guide rainwater.

[0008] As an embodiment of the utility model, the connecting rib member comprises a long connecting rib and two nut assemblies arranged at the two ends of the connecting rib, the length direction of the connecting rib corresponds to the extension direction of the bridge deck structure, the two ends of the connecting rib are provided with threaded structures, the nuts of the nut assemblies are screwed on the end portions of the connecting rib, and the nuts are tightened to tightly press the nut assemblies against the side walls of the vertical wall slots or the arch wall slots.

[0009] As an embodiment of the utility model, the two connecting ribs adjacent to one side of the arch wall structure are staggered, and the two connecting ribs adjacent to one side of the vertical wall structure are staggered.

[0010] As an embodiment of the utility model, the plug-in structure comprises a groove formed on one side of the top of the vertical wall unit and a boss arranged at the end of the arch wall component, and the boss is fixedly connected with the groove through a bolt assembly after being plugged into the groove.

[0011] As an embodiment of the utility model, the bottom of the vertical wall slot is provided with an inverted water slope, and a height difference is arranged between the inverted water slope and the bottom of the vertical wall unit, and the inverted water slope is used for guiding rainwater to an area away from the bottom of the vertical wall unit.

[0012] As an embodiment of the utility model, the vertical wall unit and the arch wall component are made of steel.

[0013] As an embodiment of the utility model, the bottom of the vertical wall unit is provided with a long strip-shaped connecting seat, and the connecting seat is fixedly connected with the bridge deck structure through a bolt assembly.

[0014] As an embodiment of the utility model, a plurality of supporting ribs are arranged between the connecting seat and the side wall of the vertical wall unit.

[0015] The beneficial effects of the above technical scheme are as follows:

[0016] The anti-rockfall structure comprises two vertical wall structures and an arch wall structure arranged on the two vertical wall structures, wherein the vertical wall structure comprises a plurality of sequentially connected vertical wall units, the arch wall structure comprises a plurality of sequentially connected arch wall units, the adjacent vertical wall units and arch wall units are connected through a connecting rib structure, and the arch wall unit is fixedly connected with the vertical wall structure through a plug-in structure, so that the splicing and assembly of the anti-rockfall structure are realized.

[0017] The utility model adopts the form of an external slot to fix and install the connecting rib structure, compared with the mode that the connecting rib structure is arranged in the unit, the maintenance and repair difficulty of the connecting rib structure is reduced, the fault tolerance is high, the adjustment of the position of the connecting rib and the difficulty of the application of the nut assembly are significantly reduced in the assembly process, and the assembly efficiency is increased. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the embodiment applied to the bridge deck structure.

[0019] Figure 2 is a perspective view of an embodiment.

[0020] Figure 3 is a side view of an embodiment.

[0021] Figure 4 is a schematic view of the distribution of the connecting rib structure of an embodiment.

[0022] Figure 5 is a schematic view of the insertion structure of the arch wall component and the vertical wall unit of an embodiment.

[0023] Wherein: 100 bridge deck structure; 200 vertical wall structure; 300 arch wall structure;

[0024] 1 vertical wall unit; 1-1 vertical wall notch; 1-2 water reverse slope; 1-3 connecting seat; 1-4 support rib; 1-5 first groove; 1-6 second groove;

[0025] 2 arch wall component; 2-1 arch wall notch; 2-2 first boss; 2-3 second boss;

[0026] 3 first connecting rib; 4 second connecting rib; 5 third connecting rib; 6 fourth connecting rib;

[0027] a first notch; b second notch; c third notch; d fourth notch. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described clearly and completely in combination with specific embodiments.

[0029] As shown in Figures 1 to 3 , a bridge-tunnel connection place rockfall prevention structure, which comprises two vertical wall structures 200 symmetrically arranged on a bridge deck structure 100 and an arch wall structure 300 arranged on the two vertical wall structures 200 and having an arch cross section, wherein the end portions of the vertical wall structure 200 and the arch wall structure 300 are connected with the portal structure of a tunnel.

[0030] Referring to Figure 2 and Figure 3 , the vertical wall structure 200 comprises a plurality of vertical wall units 1 connected in sequence, and two vertical vertical wall notches 1-1 are arranged at intervals between the vertical wall units 1, and a connecting rib component is arranged in the vertical wall notches 1-1 of the adjacent two vertical wall units 1 to connect and fix the two vertical wall units 1. Details are shown in Figure 4 , the vertical wall unit 1 is provided with four vertical wall connecting holes at intervals from top to bottom, and the vertical wall connecting holes are arranged along the length direction of the vertical wall unit 1 and are in communication with the vertical wall notches 1-1 for applying the connecting rib component.

[0031] Referring to Figure 2 and Figure 3 , the arch wall structure 300 comprises a plurality of arch wall units connected in sequence, the arch wall units comprising two symmetrically arranged arch wall members 2, both ends of the arch wall members 2 being fixedly arranged on the top of the vertical wall unit 1 through the insertion structure, both sides of the arch wall members 2 being provided with two arch wall notches 2-1 along the arch-shaped contour thereof, and the arch wall notches 2-1 of three adjacent groups of the arch wall members 2 being provided with the connecting rib members to connect and fix the three groups of the arch wall members 2, thereby realizing the connection of the two adjacent arch wall units. For details, see Figure 4 The arch wall member 2 is provided with two rows of arch wall connecting holes from the middle section to the end, the arch wall connecting holes penetrating through both ends of the arch wall member 2 and being parallel to the length direction of the vertical wall connecting hole, and the arch wall connecting holes being in communication with the arch wall notches 2-1 for applying the connecting rib member.

[0032] The vertical wall notches 1-1 and the arch wall notches 2-1 are in communication to guide rainwater. Referring to Figure 3 and Figure 4 , the four groups of vertical wall notches 1-1 and the four groups of arch wall notches 2-1 are sequentially in communication to form a first notch a, a second notch b, a third notch c and a fourth notch d.

[0033] Referring to Figure 4 , the connecting rib member comprises a long connecting rib and two nut assemblies arranged at both ends of the connecting rib, the length direction of the connecting rib corresponding to the extension direction of the bridge deck structure 100, both ends of the connecting rib being provided with a threaded structure, and the nuts of the nut assemblies being threadedly connected to the end portions of the connecting rib, and the nuts being tightened to tightly press the nut assemblies against the side walls of the vertical wall notches 1-1 or the arch wall notches 2-1.

[0034] Referring to Figure 4 , the two connecting ribs on one side of the arch wall member 2 comprise a first connecting rib 3 at the upper portion and a second connecting rib 4 at the lower portion, the two connecting ribs being staggered in the vertical direction, wherein the first connecting rib 3 spans the first notch a, the second notch b and the third notch c in Figure 4 , and the second connecting rib 4 spans the second notch b, the third notch c and the fourth notch d, thereby realizing the connection of the two adjacent arch wall units while increasing the compressive strength of the arch wall structure 300 to better resist rockfall.

[0035] Referring to Figure 4 , the vertical wall member is provided with four groups of connecting rib members, including two groups of third connecting ribs 5 and two groups of fourth connecting ribs 6, the third connecting ribs 5 and the fourth connecting ribs 6 being staggered in the vertical direction. The third connecting rib 5 spans the first notch a, the second notch b and the third notch c in Figure 4The first slot a, the second slot b and the third slot c in the vertical wall unit, and the fourth connecting rib 6 across the second slot b, the third slot c and the fourth slot d, realize the sequential connection of the vertical wall unit, and increase the compression strength in the vertical direction.

[0036] For details Figure 5 The plug-in structure includes a groove opened on one side of the top of the vertical wall unit 1 and a boss arranged at the end of the arch wall component 2, see Figure 1 The boss is fixedly connected with the groove through the bolt assembly after being plugged into the groove. Specifically, a first groove 1-5 is centrally opened on one side of the top of the vertical wall unit 1, and two second grooves 1-6 are symmetrically opened on both sides of the first groove 1-5. The first boss 2-2 is arranged at the end of the arch wall component 2 corresponding to the two grooves 1-6, and the second boss 2-3 is arranged corresponding to half of the size and shape of the first groove 1-5. After the two arch wall components 2 are symmetrically placed, the second bosses 2-3 of the two arch wall components 2 abut to form a boss corresponding to the first groove 1-5. This design enables the two arch wall components 2 in the same arch wall unit to be stably placed on the two vertical wall units 1 without applying the bolt assembly connection to the vertical wall unit 1 and the arch wall component 2, thereby reducing the assembly difficulty.

[0037] For details Figure 2 And Figure 3 The bottom of the vertical wall slot 1-1 is provided with an inverted water slope 1-2, and a height difference is arranged between the inverted water slope 1-2 and the bottom of the vertical wall unit 1. The inverted water slope 1-2 is used for guiding rainwater to an area away from the bottom of the vertical wall unit 1.

[0038] In the embodiment, the vertical wall unit 1 and the arch wall component 2 are both made of steel material, see Figure 1 The bottom of the vertical wall unit 1 is provided with a long strip-shaped connecting seat 1-3, the connecting seat 1-3 is fixedly connected with the bridge structure 100 through the bolt assembly, and a plurality of supporting ribs 1-4 are arranged between the connecting seat 1-3 and the side wall of the vertical wall unit 1.

[0039] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A rockfall protection structure at a bridge tunnel junction, characterized by It includes: Two vertical wall structures (200) symmetrically arranged on the bridge deck structure (100), the vertical wall structure (200) includes a plurality of vertical wall units (1) connected in sequence, the vertical wall units (1) are spaced apart to provide two vertical wall notches (1-1), and connecting rib members are arranged in the vertical wall notches (1-1) of adjacent two vertical wall units (1) to connect and fix the two vertical wall units (1); An arch wall structure (300) with an arch-shaped cross section arranged on the two vertical wall structures (200) includes a plurality of arch wall units connected in sequence, the arch wall unit includes two symmetrically arranged arch wall members (2), the two ends of the arch wall member (2) are fixed on the top of the vertical wall unit (1) through a plug-in structure, and two arch wall notches (2-1) are formed in the two sides of the arch wall member (2) along the arch-shaped contour, and the connecting rib members are arranged in the arch wall notches (2-1) of the three adjacent groups of arch wall members (2) to connect and fix the three groups of arch wall members (2); the vertical wall notches (1-1) and the arch wall notches (2-1) are connected to guide rainwater.

2. The rockfall prevention structure at the bridge tunnel junction according to claim 1, characterized in that, The connecting rib member includes a long connecting rib and two nut assemblies arranged at the two ends of the connecting rib, the length direction of the connecting rib corresponds to the extension direction of the bridge deck structure (100), the two ends of the connecting rib are provided with threaded structures, the nuts of the nut assemblies are screwed on the end portions of the connecting rib, and the nuts are tightened to tightly press the nut assemblies against the side walls of the vertical wall notches (1-1) or the arch wall notches (2-1).

3. A bridge-tunnel junction rockfall prevention structure according to claim 2, characterised in that, The two connecting ribs adjacent to each other on one side of the arch wall structure (300) are arranged alternately, and the two connecting ribs adjacent to each other on the vertical wall structure (200) are arranged alternately.

4. A bridge-tunnel junction rockfall prevention structure according to claim 1, characterized in that, The plug-in structure includes a groove formed on one side of the top of the vertical wall unit (1) and a boss arranged at the end of the arch wall member (2), and the boss and the groove are plug-in connected and fixed through a bolt assembly.

5. A bridge-tunnel junction rockfall prevention structure according to claim 1, wherein The bottom of the vertical wall notch (1-1) is provided with a water diversion slope (1-2), and a height difference is arranged between the water diversion slope (1-2) and the bottom of the vertical wall unit (1), and the water diversion slope (1-2) is used to guide rainwater to an area away from the bottom of the vertical wall unit (1).

6. A bridge-tunnel junction rockfall prevention structure according to claim 1, wherein The vertical wall unit (1) and the arch wall member (2) are made of steel.

7. A bridge-tunnel junction rockfall prevention structure according to claim 6, characterised in that, The bottom of the vertical wall unit (1) is provided with a long plate-shaped connecting seat (1-3), and the connecting seat (1-3) and the bridge deck structure (100) are fixedly connected through a bolt assembly.

8. A bridge-tunnel junction rockfall prevention structure according to claim 7, characterised in that, A plurality of support ribs (1-4) are arranged between the connecting seat (1-3) and the side wall of the vertical wall unit (1).

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