Steel formwork connecting structure for tunnel construction

Abstract

The utility model discloses a steel template connecting structure for tunnel construction, which relates to the technical field of inverted arch templates and comprises an inverted arch template, a C-shaped butt joint groove, a C-shaped bulge, an L-shaped groove, an inclined clamping groove and a connecting piece, every two adjacent inverted arch formworks are used for achieving positioning and splicing through butt joint of the C-shaped butt joint grooves and the C-shaped protrusions. And the connecting piece is used for connecting and fixing the two inverted arch templates. According to the inverted arch formwork, the inverted arch formwork bodies with the C-shaped butt joint grooves and the C-shaped protrusions are arranged, butt joint is carried out through the corresponding C-shaped protrusions and the C-shaped butt joint grooves, compared with a traditional horizontal splicing face structure, rapid positioning of the vertical positions of the two inverted arch formwork bodies can be achieved, meanwhile, the sealing performance of the splicing faces is better, and the splicing faces are not prone to deformation. In addition, through the structural arrangement of the L-shaped grooves, the inclined clamping grooves and the connecting pieces, the two inverted arch formworks can be conveniently fixed, the two adjacent inverted arch formworks can be stably fixed through cooperation of the multiple parts, and the situation of concrete leakage is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of inverted arch form, and specifically relates to a steel form connection structure for tunnel construction. BACKGROUND

[0002] In modern engineering construction, tunnel engineering is widely used in the fields of transportation, water conservancy and energy, and is paid much attention to. As an important part of tunnel structure, the construction quality of inverted arch directly relates to the stability and safety of the tunnel. Inverted arch refers to the arched structure at the top of the tunnel, which provides necessary support for the tunnel by bearing the pressure of the rock and soil above;

[0003] The inverted arch form is a temporary structure used in tunnel engineering to support and form the inverted arch structure. In tunnel construction, the inverted arch form provides necessary support for the unhardened concrete to prevent it from collapsing during the hardening process. At the same time, through the fixation and guidance of the inverted arch form, the concrete can be hardened according to the designed shape to form an accurate inverted arch structure. Standardized inverted arch forms can speed up the construction and improve the construction efficiency of the project.

[0004] The existing inverted arch form is prone to concrete leakage due to loose connection during assembly and use. Therefore, a steel form connection structure for tunnel construction is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the problems in the above background and provides a steel form connection structure for tunnel construction.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a steel form connection structure for tunnel construction, comprising an inverted arch form, two vertically distributed side edges of the inverted arch form are integrally formed with C-shaped butt joints, and the other two vertically distributed side edges of the inverted arch form are integrally formed with C-shaped protrusions.

[0007] The butt joint of the C-shaped butt joint and the C-shaped protrusion of the adjacent two inverted arch forms is used to realize positioning and splicing, and at the same time, the sealing operation of the splicing part of the two inverted arch forms is realized.

[0008] L-shaped grooves and inclined clamping grooves are formed at the upper edges of the four side edges of the inverted arch form, and a connecting piece is connected to the splicing part of the two inverted arch forms through the L-shaped grooves and the inclined clamping grooves. The connecting piece is used to realize the connection and fixation of the two inverted arch forms.

[0009] The connecting piece comprises clamping columns and compression side blocks.

[0010] The clamping columns and the compression side blocks are both provided with two clamping columns, which are distributed in the middle of the two compression side blocks and fixed to the two end parts of the compression side blocks.

[0011] Two clamping columns are respectively clamped in the horizontal groove part and the inclined clamping groove of the L-shaped groove, and two pressing side blocks are respectively attached to the side edge folds of the two inverted arch templates, so that the relative fixation of the two inverted arch templates is realized.

[0012] As a further scheme of the utility model: the inclined clamping groove is distributed at one end of the horizontal groove part of the L-shaped groove away from the groove opening part of the L-shaped groove;

[0013] The distance from the center of the horizontal groove end of the L-shaped groove to the center of the opening of the inclined clamping groove matches the distance of the two clamping columns, and the inclined clamping groove is inclined from top to bottom and close to the L-shaped groove.

[0014] As a further scheme of the utility model: the width of the clamping column matches the total thickness of the side edge folds of the two inverted arch templates.

[0015] As a further scheme of the utility model: the inverted arch template top inner side is welded with multiple cross staggered reinforcing ribs.

[0016] As a further scheme of the utility model: the L-shaped groove and the inclined clamping groove are evenly provided with multiple along the traces of the four side edge folds of the inverted arch template.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] By setting the inverted arch template with the C-shaped butt joint groove and the C-shaped protrusion, the corresponding C-shaped protrusion and the C-shaped butt joint groove are butt-jointed, compared with the structure of the traditional horizontal splicing surface, the vertical position of the two inverted arch templates can be quickly positioned, the sealing of the splicing surface is better, the structure of the L-shaped groove, the inclined clamping groove and the connecting piece can realize the convenient fixation of the two inverted arch templates, and the multiple parts can keep the two adjacent inverted arch templates stable and fixed, so that the concrete leakage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of the splicing state of multiple inverted arch templates of the utility model;

[0020] Fig. 2 It is another view of the splicing state of multiple inverted arch templates of the utility model;

[0021] Fig. 3 It is a structural schematic view of the inverted arch template and the connecting piece of the utility model.

[0022] In the drawing: 1, inverted arch template; 2, C-shaped butt joint groove; 3, C-shaped protrusion; 4, L-shaped groove; 5, inclined clamping groove; 6, reinforcing rib; 7, connecting piece; 701, clamping column; 702, pressing side block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0024] Please refer to Figs. 1-3 In the embodiments of the utility model, a steel formwork connecting structure for tunnel construction comprises an inverted arch formwork 1, C-shaped butt joints 2 are integrally formed on two vertically distributed side edges of the inverted arch formwork 1, and C-shaped protrusions 3 are integrally formed on the other two vertically distributed side edges of the inverted arch formwork 1.

[0025] The C-shaped butt joints 2 and the C-shaped protrusions 3 of the two adjacent inverted arch formworks 1 are used for realizing positioning and splicing, and simultaneously realizing sealing operation at the splicing position of the two inverted arch formworks 1.

[0026] L-shaped grooves 4 and inclined clamping grooves 5 are formed at the upper edges of the four side edges of the inverted arch formwork 1, the splicing position of the two inverted arch formworks 1 is connected with connecting pieces 7 through the L-shaped grooves 4 and the inclined clamping grooves 5, and the connecting pieces 7 are used for realizing connection and fixation of the two inverted arch formworks 1.

[0027] The connecting piece 7 comprises clamping columns 701 and pressing side blocks 702.

[0028] The clamping columns 701 and the pressing side blocks 702 are both provided with two, the two clamping columns 701 are distributed in the middle of the two pressing side blocks 702, and are fixed at the two end positions of the pressing side blocks 702.

[0029] The two clamping columns 701 are respectively clamped in the horizontal groove position of the L-shaped groove 4 and the inside of the inclined clamping groove 5, and the two pressing side blocks 702 are respectively attached to the side edge of the two inverted arch formworks 1, so as to realize relative fixation of the two inverted arch formworks 1.

[0030] The inclined clamping groove 5 is distributed at one end of the horizontal groove position of the L-shaped groove 4 away from the slot opening position of the L-shaped groove 4.

[0031] The distance from the center of the horizontal groove end of the L-shaped groove 4 to the opening center position of the inclined clamping groove 5 matches the distance of the two clamping columns 701, and the inclined clamping groove 5 is inclined from top to bottom and close to the L-shaped groove 4.

[0032] The width of the clamping column 701 matches the total thickness of the side edge of the two inverted arch formworks 1.

[0033] In the embodiment, when the inverted arch formwork 1 is assembled, two inverted arch formworks 1 horizontally longitudinally or along the circular arc direction are connected through the corresponding C-shaped protrusions 3 and C-shaped butt joints 2. Compared with the structure of the traditional horizontal joint surface, the vertical position of the two inverted arch formworks 1 can be quickly positioned, and the sealing of the joint surface is better.

[0034] After that, only the two inverted arch formworks 1 need to be adjusted along the horizontal longitudinal direction or the circular arc direction, so that the L-shaped grooves 4 and the inclined clamping grooves 5 of the two inverted arch formworks 1 are aligned (it should be noted that the C-shaped protrusions 3 and the C-shaped butt joints 2 can also play the role of sliding guide during the adjustment process).

[0035] After the two inverted arch formworks 1 are connected, the connecting piece 7 can be taken out. One clamping column 701 on the connecting piece 7 is clamped into the L-shaped groove 4, and is moved along the horizontal groove of the L-shaped groove 4 to the inclined clamping groove 5. When the clamping column 701 moves to the front end of the horizontal groove of the L-shaped groove 4, the connecting piece 7 is rotated downward, so that the other clamping column 701 is clamped in the inclined clamping groove 5. During the sliding process of the other clamping column 701 along the inner wall of the inclined clamping groove 5, the clamping column 701 will move slightly backward along the horizontal groove of the L-shaped groove 4 (it should be noted that there is still a distance between the final position of the clamping column 701 and the slot of the L-shaped groove 4). In this way, the installation of the connecting piece 7 is completed, and the pressing side block 702 of the connecting piece 7 presses the side edges of the two inverted arch formworks 1, so that the two inverted arch formworks 1 are fixed.

[0036] It should be noted that the frictional resistance between the two inverted arch formworks 1 and the pressing side block 702 and the clamping column 701 is large, which can ensure the stable installation of the connecting piece 7. The installation and disassembly of the connecting piece 7 are assisted by tools (such as a hammer).

[0037] Please refer to Figs. 1-3 , a plurality of reinforcing ribs 6 are welded on the top inside of the inverted arch formwork 1.

[0038] The L-shaped grooves 4 and the inclined clamping grooves 5 are evenly provided along the trajectories of the four side edges of the inverted arch formwork 1.

[0039] In the embodiment, the reinforcing ribs 6 are used to reinforce the shape of the inverted arch formwork 1, and a plurality of groups of L-shaped grooves 4 and inclined clamping grooves 5 are arranged to cooperate with the installation of a plurality of groups of connecting pieces 7 to stably connect and fix the adjacent two inverted arch formworks 1.

[0040] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A steel form connection structure for tunnel construction, comprising an inverted arch form (1), characterized in that, The C-shaped butt joint groove (2) is integrally formed on the two vertically distributed side edges of the inverted arch formwork (1), and the C-shaped protrusion (3) is integrally formed on the other two vertically distributed side edges of the inverted arch formwork (1); The C-shaped butt joint groove (2) and the C-shaped protrusion (3) are used for realizing the positioning and splicing of the adjacent two inverted arch formworks (1), and simultaneously realizing the sealing operation at the splicing position of the two inverted arch formworks (1); The L-shaped groove (4) and the inclined clamping groove (5) are arranged at the upper edges of the four side edges of the inverted arch formwork (1), the connecting piece (7) is connected to the splicing position of the two inverted arch formworks (1) through the L-shaped groove (4) and the inclined clamping groove (5), and the connecting piece (7) is used for realizing the connection and fixation of the two inverted arch formworks (1). The connecting piece (7) comprises a clamping column (701) and a pressing side block (702). The clamping column (701) and the pressing side block (702) are both provided with two clamping columns (701) which are distributed in the middle of the two pressing side blocks (702) and are fixed to the two end portions of the pressing side blocks (702). The two clamping columns (701) are respectively clamped in the horizontal groove portion of the L-shaped groove (4) and the inside of the inclined clamping groove (5), and the two pressing side blocks (702) are respectively attached to the side edges of the two inverted arch formworks (1), so as to realize the relative fixation of the two inverted arch formworks (1).

2. The steel form connection structure for tunnel construction according to claim 1, characterized in that, The inclined clamping groove (5) is distributed at one end of the horizontal groove portion of the L-shaped groove (4) which is away from the slot opening portion of the L-shaped groove (4). The distance from the center of the horizontal groove end portion of the L-shaped groove (4) to the center of the opening of the inclined clamping groove (5) matches the distance between the two clamping columns (701), and the inclined clamping groove (5) is inclined from top to bottom and close to the L-shaped groove (4).

3. The steel form connection structure for tunnel construction according to claim 1, characterized in that, The width of the clamping column (701) matches the total thickness of the side edges of the two inverted arch formworks (1).

4. The steel form connection structure for tunnel construction according to claim 1, characterized in that, The inverted arch formwork (1) is welded with a plurality of cross-interlaced reinforcing ribs (6) on the inner side of the top portion.

5. The steel form connection structure for tunnel construction according to claim 1, wherein The L-shaped groove (4) and the inclined clamping groove (5) are uniformly provided with a plurality of grooves along the trajectories of the four side edges of the inverted arch formwork (1).

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