Tunnel longitudinal construction joint waterstop clamp

Abstract

The utility model discloses a tunnel longitudinal construction joint waterstop clamp which comprises a hanging bracket, the bottom end of the hanging bracket is fixedly connected with an inverted arch low side wall formwork, a hanging arm is horizontally arranged at the top of the hanging bracket, and the tunnel longitudinal construction joint waterstop clamp is characterized in that a limiting stopper assembly used for fixing a middle-buried waterstop is arranged in the middle of the hanging arm, and a second abutting mechanism is further arranged on the hanging arm; the limiting stopper assembly comprises a limiting piece and an abutting clamping piece, the bottom end of the limiting piece and the bottom end of the abutting clamping piece both extend to the position below the suspension arm and are used for clamping the top of the middle-buried type water stop belt, the abutting clamping piece is slidably connected to the suspension arm, and a first abutting structure is arranged on the suspension arm; the lifting arm is provided with a strip-hole-shaped adjusting movable groove, the adjusting movable groove is used for adjusting the horizontal position of the limiting piece, the top of the limiting piece is provided with a screw rod, and the screw rod penetrates through the adjusting movable groove and then is installed and fixed through a nut. The embedded type waterstop and the back pasting type waterstop can be fixed at the same time, the equipment installation time is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a water stop clamp for a tunnel longitudinal construction joint. Background Art

[0002] Waterstops are mainly used in foundation projects that are integrated with concrete structures and are installed in construction joints and deformation joints when concrete is poured in situ, such as underground facilities, tunnels, water delivery aqueducts, water dams, liquid storage structures, etc. According to their different functions and installation locations, they are divided into back-attached waterstops and embedded waterstops. Reliable fixing measures must be taken during installation of waterstops to prevent displacement during concrete pouring and ensure the correct position of the waterstop in the concrete, so as to ensure the waterproof effect.

[0003] The traditional installation method of waterstop is to fix the position of the embedded waterstop by clamping it with a clamp. However, the embedded waterstop is distributed vertically, and workers need to set up a row of clamps. When setting the clamps, it is difficult to ensure that the height of each clamp is flush, or it is easy to offset left and right or not centered. As a result, the height of the top of the embedded waterstop is different, which cannot meet the construction requirements.

[0004] CN108005692B discloses a waterstop fixture, which has a fixing part installed on the side wall of a tunnel, and a connecting part connected to the fixing part and extending above the concrete pouring area, wherein the connecting part is provided with a mounting structure for connecting the waterstop, and the waterstop can be positioned or fixed. However, the above technical solution cannot adjust the position of the buried waterstop according to the thickness of the low side wall of the inverted arch of the surrounding rock level, and also cannot fix the back-attached waterstop. Therefore, when fixing the back-attached waterstop, it is necessary to install a fixing device separately, which is time-consuming and labor-intensive. Summary of the invention

[0005] The utility model aims to solve the technical problems existing in the prior art, and particularly innovatively proposes a tunnel longitudinal construction joint waterstop clamp, which can simultaneously fix the embedded waterstop and the back-stick waterstop, saving equipment installation time and improving work efficiency.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a tunnel longitudinal construction joint waterstop clamp, including a hanger, the bottom end of the hanger is fixedly connected to the inverted arch short side wall formwork, a suspension arm is horizontally arranged on the top of the hanger, a limiter assembly for fixing the embedded waterstop is arranged in the middle of the suspension arm, and a second tightening mechanism for fixing the back-attached waterstop is also arranged on the suspension arm; the limiter assembly includes a limit plate and a tightening clip, the bottom ends of the limit plate and the tightening clip both extend below the suspension arm and are used to clamp the top of the embedded waterstop, the tightening clip is slidably connected to the suspension arm, and a first tightening structure for pressing the embedded waterstop against the limit plate is arranged on the suspension arm;

[0007] The boom is provided with a bar-shaped movable adjustment slot, which is used to adjust the horizontal position of the limit plate. A screw is provided on the top of the limit plate, and the screw is installed and fixed by a nut after passing through the movable adjustment slot.

[0008] In the above scheme: the first clamping structure and the second clamping structure both include a horizontally arranged screw rod, the screw rod is externally threaded with a sleeve, the sleeve is fixedly connected to the boom through a sleeve fixing plate, and a screw rod handle is provided on the screw rod to facilitate the rotation of the screw rod.

[0009] In the above scheme: the end of the screw rod for tightening is provided with a top plate assembly, the top plate assembly includes a mounting tube for sleeved on the end of the screw rod, the other end of the mounting tube is provided with a top plate body, and the front and rear sides of the top plate body and the outside of the mounting tube are provided with reinforcing ribs. The top plate assembly is detachable and can be replaced with top plate bodies of different specifications according to needs.

[0010] In the above scheme: the limit plate and the clamping plate are both made of angle steel, and the screw rod is formed by a bolt passing through the transverse part of the limit plate. It is a commonly used material in tunnel construction, and the angle steel can be assembled on site by selecting the cut waste, which saves costs.

[0011] In the above scheme: there are two adjustable movable grooves, which are arranged at intervals in front and behind to prevent the limiter assembly from rotating.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the utility model are as follows: the provided boom can fix and clamp the clamp of the embedded waterstop, and at the same time, it also serves as the maximum height when the embedded waterstop is installed. The provided limit plate can be fixedly installed on the boom by a bolt assembly, serving as a limit to the horizontal position of the embedded waterstop. The provided clamping clip can be supported on the limit plate under the action of the first clamping structure, thereby achieving the clamping of the top of the embedded waterstop, ensuring the problem of the exposed length of the waterstop installation, and increasing the qualified rate of the buried steel side waterstop installation in the tunnel to more than 97%. The provided adjustable movable groove and screw can adjust the horizontal position of the embedded waterstop according to the thickness of the short side wall of the invert arch of different surrounding rock levels. When adjusting, the nut can be directly loosened from the top of the boom, and the screw can be pushed to achieve it, which is convenient and easy to adjust. The second tightening mechanism can press the back-sticking waterstop against the inner wall of the tunnel, and can fix the embedded waterstop and the back-sticking waterstop at the same time, saving equipment installation time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a top view of the utility model. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] like Figure 1~Figure 2 As shown, a tunnel longitudinal construction joint water stop clamp includes a hanger 1, the bottom end of which is fixedly connected to the inverted arch low side wall formwork a. A suspension arm 2 is horizontally arranged on the top of the hanger 1, and the end of the suspension arm 2 is suspended in the air. A limiter assembly 3 is arranged in the middle of the suspension arm 2, and a second tightening mechanism for fixing the back-sticking water stop c is arranged at the end.

[0017] The limiter assembly 3 includes a limit plate 3a and a clamping clip 3b, wherein the limit plate 3a and the clamping clip 3b can be directly made of leftover angle steel on the construction site to save costs. The tops of the limit plate 3a and the clamping clip 3b are fixed laterally and are both installed on the bottom side of the boom 2. The vertical parts of the limit plate 3a and the clamping clip 3b extend downward to clamp the top of the embedded waterstop b. The clamping clip 3b is slidably connected to the boom 2, and the boom 2 is provided with a first clamping structure for pushing the clamping clip 3b to press on the limit plate 3a.

[0018] The boom 2 is provided with an adjustment structure for adjusting the horizontal position of the limit plate 3a. Specifically, the adjustment structure is two adjustment movable grooves 9 arranged on the boom 2 at intervals in front and back, and the adjustment movable grooves 9 are all strip-shaped holes. The limit plate 3a is equipped with a mounting bolt assembly. The bolts 10 of the mounting bolt assembly pass through the limit plate 3a and the adjustment movable groove 9 from the bottom of the limit plate 3a in sequence, and are locked and installed by the nut on the top of the boom 2. The structure is simple, and the fixing method is simple and convenient. When adjustment is required next time, only the nut on the top of the boom 2 needs to be loosened, which is convenient for adjustment and tightening the nut.

[0019] Specifically, the first and second abutting structures each include a horizontally arranged screw rod 6, which is externally threaded with a sleeve 5. The sleeve 5 is fixedly connected to the boom 2 through a sleeve fixing plate 4, and a top plate assembly 7 is arranged at one end of the screw rod 6 for abutting, and a screw rod handle 8 is arranged at the other end of the screw rod 6.

[0020] The top plate assembly 7 includes a mounting tube 7a for sleeved on the end of the screw rod 6, and a top plate body 7b is provided at the other end of the mounting tube 7a. Reinforcement ribs 7c are provided on the front and rear sides of the top plate body 7b and the outside of the mounting tube 7a. The top plate assembly 7 is detachable, and the top plate body 7b of different specifications can be replaced according to needs.

[0021] Installation steps: Step 1: Assemble the positioning fixture; assemble the hanger 1 and the limiter assembly 3 at the designed installation position of the low side wall of the inverted arch according to the embedded water stop belt b. And according to the construction requirements, adjust the limiter 3a to the same horizontal position to ensure that it will not deviate left and right.

[0022] Step 2: Weld the waterstop, use the "waterstop welding machine" to weld the back-attached and embedded waterstop of the upper plate invert, and spread it longitudinally along the low side wall of the invert.

[0023] Step 3: Install the positioning fixtures; the spacing of the positioning fixtures is 1.5m, and holes are drilled in advance on the template of the short side wall of the inverted arch according to the positioning spacing, and a row of hangers 1 are installed on the template of the short side wall of the inverted arch according to the spacing.

[0024] The fourth step: tighten the water stop; fix the tensioner on the primary support in the direction of the end of the inverted arch in advance, put the water stop between the limit plate 3a and the clamping piece 3b of the limiter assembly 3, and tighten it with the tensioner to make it close to the limit plate 3a.

[0025] Step 5: Rotate the screw 6 to tighten the water stop; rotate the screw 6 until the water stop can meet the distance for the top plate assembly 7 to be placed, and then put the top plate assembly 7 in. Continue to rotate the screw 6 into the hole of the top plate assembly 7 to tighten the water stop. The back-sticking water stop can be tightened directly with the screw 6 after being manually tightened. The top plate assembly 7 can be set according to the needs.

[0026] Step 6: The operation is completed and concrete is poured.

Claims

1. A tunnel longitudinal construction joint water stop clamp, comprising a hanger (1), the bottom end of the hanger (1) being fixedly connected to an inverted arch low side wall formwork (a), and a suspension arm (2) being horizontally arranged at the top of the hanger (1), characterized in that: A limiter assembly (3) for fixing the embedded waterstop (b) is provided in the middle of the boom (2), and a second clamping mechanism for fixing the back-attached waterstop (c) is also provided on the boom (2); the limiter assembly (3) comprises a limiter plate (3a) and a clamping clip (3b), the bottom ends of the limiter plate (3a) and the clamping clip (3b) both extend below the boom (2) and are used to clamp the top of the embedded waterstop (b), the clamping clip (3b) is slidably connected to the boom (2), and a first clamping structure for pressing the embedded waterstop (b) against the limiter plate (3a) is provided on the boom (2); The boom (2) is provided with a strip-shaped hole-shaped adjustable movable groove (9), the adjustable movable groove (9) being used to adjust the horizontal position of the limiting plate (3a), and a screw rod is provided on the top of the limiting plate (3a), and the screw rod passes through the adjustable movable groove (9) and is installed and fixed by a nut.

2. A tunnel longitudinal construction joint waterstop clamp according to claim 1, characterized in that: The first clamping structure and the second clamping structure both comprise a horizontally arranged screw rod (6), the screw rod (6) being externally threadedly connected to a sleeve (5), the sleeve (5) being fixedly connected to the boom (2) via a sleeve fixing plate (4), and the screw rod (6) being provided with a screw rod handle (8).

3. A tunnel longitudinal construction joint waterstop clamp according to claim 2, characterized in that: A top plate assembly (7) is provided at one end of the screw rod (6) for tightening, the top plate assembly (7) comprising a mounting tube (7a) for sleeved on the end of the screw rod (6), a top plate body (7b) is provided at the other end of the mounting tube (7a), and reinforcing ribs (7c) are provided on both the front and rear sides of the top plate body (7b) and the outside of the mounting tube (7a).

4. A tunnel longitudinal construction joint waterstop clamp according to claim 1, characterized in that: The limiting plate (3a) and the clamping plate (3b) are both made of angle steel, and the screw rod is formed by a bolt (10) passing through the transverse portion of the limiting plate (3a).

5. A tunnel longitudinal construction joint waterstop clamp according to claim 4, characterized in that: There are two adjustable movable grooves (9), which are arranged at intervals in front and back.

Images