CN218439401U

CN218439401U - Bury waterstop location fixture in tunnel invert side wall

Info

Publication number: CN218439401U
Application number: CN202222315027.2U
Authority: CN
Inventors: 郭军; 吴晓华; 肖勇; 邓荐
Original assignee: Fifth Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
Current assignee: Fifth Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-02-03
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a tunnel inverted arch side wall embedded waterstop positioning fixture, which is arranged on a side wall steel frame template at intervals and comprises an adjusting bracket, a fixed splint and a movable splint, wherein one end of the adjusting bracket is fixed on the side wall steel frame template, the other end of the adjusting bracket is fixedly connected with the fixed splint, and the adjusting bracket controls the horizontal telescopic length and the vertical positioning height of the relative connection position of the fixed splint on the side wall steel frame template; the top of the fixed splint is hinged with the movable splint, the fixed splint and the middle part of the movable splint penetrate horizontally to be connected with a fixed-height clamping bolt, and the lower parts of the fixed splint and the movable splint are oppositely and fixedly provided with clamping blocks. The positioning fixture can realize the functions of adjusting the height of the water stop and horizontally positioning, and has the advantages of simple structure and easy realization.

Description

Bury waterstop location fixture in tunnel invert side wall

Technical Field

The utility model relates to a tunnel construction technical field specifically is bury waterstop location fixture in tunnel invert side wall.

Background

At present, the waterproof of a construction joint is realized by a mode of embedding a waterstop and a waterstop strip in a tunnel secondary lining construction joint commonly, wherein the waterproof of a tunnel longitudinal construction joint is realized by adopting a rubber waterstop. The rubber water stopper has certain mechanical property and better water penetration resistance; the concrete sealing structure has certain compression elastic sealing performance, and has large compression rebound sealing force and reliable sealing at an interface which is in close contact with concrete; the steel plate has certain compression deformation capacity and elastic recovery capacity, and can adapt to the deformation of construction joints within the elastic deformation range. However, rubber waterstops are installed and fixed in a pre-embedded mode, the rigidity of the rubber waterstops is not good as that of steel plate waterstops, the rubber waterstops are difficult to install and fix, the rubber waterstops are generally bound and fixed by iron wires, and the rubber waterstops are easy to bend and deform or even fall down under the vibration effect of concrete pouring to form gaps of the concrete pouring.

1. The existing water stop belt has the following embedding requirements: the longitudinal buried water stop is used in a longitudinal construction joint and a deformation joint and is arranged at 1/2 of the structure thickness. The concrete requirements are as follows: the water stop band is 40cm in width, 20cm exposed and 20cm buried.

2. The existing waterstop burying construction method comprises the following steps: the anchor reinforcing steel bars are arranged on the primary support surfaces at two ends of the tunnel and at a distance of 1-2 meters from the inverted arch end, the buried water stop is placed along the length direction of the short side wall of the tunnel, one end, close to the anchor reinforcing steel bars, of the buried water stop is clamped by the vertical clamp, the vertical clamp is connected with the anchor reinforcing steel bars through the steel wire rope, the steel wire rope is provided with a tightener between the vertical clamp and the anchor reinforcing steel bars, the tightener is adjusted to tighten the steel wire rope, and the straight-ahead direction along the tunnel direction is guaranteed by the buried water stop until the middle part under the action of tension.

However, the construction method is difficult to realize through the existing waterstop clamp, the waterstop has certain elasticity, the middle part of the waterstop is still in a downward bending trend under the influence of gravity although the waterstop can be ensured to be straight after the two ends of the waterstop are tensioned, the existing waterstop clamp is difficult to be matched with the positioning position of the waterstop to perform horizontal stretching and height lifting adjustment, and particularly the positioning height is difficult to control. And the existing waterstop clamp has the defects of positioning: the labor is wasted, and the operation of welding the clamping grooves by the steel bars needs to be repeated every cycle. Meanwhile, as the reinforcing steel bar clamping groove is welded on site, the welding effect cannot be guaranteed, and the installation of the water stop cannot be controlled. Meanwhile, in the concrete pouring process, after the vibrating rod touches the water stop, the position of the water stop is easy to change, so that the water stop deviates.

Therefore, how to design a waterstop positioning clamp to adjust the positioning position of the waterstop in height and horizontal expansion amount becomes a technical problem to be solved urgently by the person in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's weak point, provide and bury waterstop positioning fixture in the tunnel invert side wall, this positioning fixture can realize that the waterstop adjusts height and horizontal location function, and simple structure, easily realization.

The tunnel inverted arch side wall embedded water stop positioning fixture comprises an adjusting bracket, a fixed splint and a movable splint, wherein one end of the adjusting bracket is fixed on the side wall steel frame template, the other end of the adjusting bracket is fixedly connected with the fixed splint, and the adjusting bracket controls the horizontal telescopic length and the vertical positioning height of the fixed splint at the relative connection position on the side wall steel frame template; the top of the fixed splint is hinged with the movable splint, the fixed splint and the middle part of the movable splint penetrate horizontally to be connected with a fixed-height clamping bolt, and the lower parts of the fixed splint and the movable splint are oppositely and fixedly provided with clamping blocks.

Preferably, the adjusting bracket comprises a vertical plate and a transverse plate, wherein the vertical plate is vertically welded and fixedly arranged on the side wall steel frame template, and a plurality of rows of bolt holes are formed in the vertical plate; one end of the transverse plate is fixedly arranged on the side wall of the fixed clamping plate, and the middle part of the transverse plate is provided with a positioning long hole extending horizontally; fastening bolts penetrate through the bolt holes and the positioning long holes.

Preferably, the fixed clamping plate comprises angle steel and channel steel, wherein the angle steel is vertically arranged, a transverse plate is welded and fixed on one side of the angle steel, and the channel steel is welded and fixed on the upper part of the other side of the angle steel along the extension direction of the water stop belt; the side wall of the channel steel is hinged with a movable clamping plate through a hinge.

The utility model has the advantages and the technical effect be:

the utility model discloses a tunnel invert side wall buries waterstop positioning fixture, realizes the lift height and the horizontal positioning adjustment of the relative position of fixed splint and side wall steel frame template through adjusting the support, fixes the relative height between waterstop and fixed splint by clamping bolt, and provides clamping force by clamping bolt to make fixed splint and movable splint opposite clamp waterstop; and finally, the vertical plate and the transverse plate are matched and fixed through fastening bolts by the bolt holes and the positioning long holes, so that the height and horizontal relative position of the vertical plate and the transverse plate are adjusted.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

in the figure: 1-movable splints; 2-a hinge; 3-channel steel; 4-angle steel; 5-clamping the bolt; 6-water stop belt; 7-a clamping block; 8-a transverse plate; 9-positioning the long hole; 10-standing a plate; 11-bolt holes; 12-a fastening bolt; 13-side wall steel frame formwork.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

The tunnel inverted arch side wall is internally provided with a positioning fixture of the water stop belts, the positioning fixture is arranged on a side wall steel frame template 13 at intervals and comprises an adjusting bracket, a fixed splint and a movable splint 1, wherein one end of the adjusting bracket is fixed on the side wall steel frame template, the other end of the adjusting bracket is fixedly connected with the fixed splint, and the adjusting bracket controls the horizontal expansion length and the vertical positioning height of the relative connecting position of the fixed splint on the side wall steel frame template; the top of the fixed splint is hinged with the movable splint, the fixed splint and the middle part of the movable splint horizontally penetrate through and are connected with a fixed-height clamping bolt 5, and the lower parts of the fixed splint and the movable splint are oppositely and fixedly provided with a clamping block 7.

Preferably, the adjusting bracket comprises a vertical plate 10 and a transverse plate 8, wherein the vertical plate is vertically welded and fixedly arranged on the side wall steel frame template, and a plurality of rows of bolt holes 11 are formed in the vertical plate; one end of the transverse plate is fixedly arranged on the side wall of the fixed clamping plate, and the middle part of the transverse plate is provided with a positioning long hole 9 extending horizontally; the bolt holes and the positioning long holes are internally fixed with fastening bolts 12 in a penetrating way.

Preferably, the fixed clamping plate comprises angle steel 4 and channel steel 3, wherein the angle steel is vertically arranged, a transverse plate is welded and fixed on one side of the angle steel, and the channel steel is welded and fixed on the upper part of the other side of the angle steel along the extension direction of the water stop 6; the side wall of the channel steel is hinged with a movable clamping plate through a hinge 2.

In order to more clearly describe the embodiments of the present invention, an example is provided below:

the utility model discloses a bury waterstop location fixture in tunnel invert side wall, after tensioning at the waterstop both ends and preliminary location in pouring the groove, should use side wall steelframe template as horizontal benchmark earlier, select a row of bolt hole position of equal height on the riser, fix the high connection diaphragm through the fastening bolt (fastening bolt can not screw up completely at this moment); meanwhile, the movable clamping plate is turned downwards, the clamping bolt penetrates between the movable clamping plate and the fixed clamping plate, attention is paid to ensuring the relative height position of the water stop and the fixed clamping plate, the top surface of the water stop is always attached to the clamping bolt before the water stop is clamped, and finally the clamping bolt is screwed down to enable the horizontal distance and the vertical height of the water stop and the fixed clamping plate to be relatively fixed. And finally, adjusting the horizontal extension length of the transverse plate according to the horizontal tensioning position of the water stop to ensure that the horizontal dragging force of the water stop cannot be applied under the condition of not being influenced by external force after the water stop is clamped, and finally, completely screwing the fastening bolt.

Finally, the parts of the utility model which are not described adopt the mature products and the mature technical means in the prior art.

The methods disclosed and suggested herein can be implemented by those skilled in the art by referring to the contents of the text and appropriately changing the conditions and routes, and although the methods and manufacturing techniques of the present invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the art that the methods and techniques herein can be modified or re-combined to implement final manufacturing techniques without departing from the spirit and scope of the present invention. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and content of the invention. And it will be understood that modifications and variations can be effected by a person skilled in the art in light of the above teachings and that all such modifications and variations are intended to be within the scope of the appended claims.

Claims

1. Bury waterstop location fixture in tunnel invert side wall, this location fixture interval sets up on side wall steelframe template, its characterized in that: the positioning fixture comprises an adjusting bracket, a fixed clamp plate and a movable clamp plate, wherein one end of the adjusting bracket is fixed on the side wall steel frame template, the other end of the adjusting bracket is fixedly connected with the fixed clamp plate, and the adjusting bracket controls the horizontal telescopic length and the vertical positioning height of the fixed clamp plate relative to the connecting position on the side wall steel frame template; the top of the fixed clamping plate is hinged with a movable clamping plate, the fixed clamping plate and the middle part of the movable clamping plate horizontally penetrate through and are connected with a fixed-height clamping bolt, and clamping blocks are oppositely and fixedly arranged on the lower parts of the fixed clamping plate and the movable clamping plate.

2. The fixture for positioning the water stop for the inverted arch side wall of the tunnel according to claim 1, wherein: the adjusting bracket comprises a vertical plate and a transverse plate, wherein the vertical plate is vertically welded and fixedly arranged on the side wall steel frame template, and a plurality of rows of bolt holes are formed in the vertical plate; one end of the transverse plate is fixedly arranged on the side wall of the fixed clamping plate, and the middle part of the transverse plate is provided with a positioning long hole extending horizontally; and fastening bolts penetrate through and are fixed in the bolt holes and the positioning long holes.

3. The tunnel invert side wall buried waterstop positioning fixture as claimed in claim 1, characterized in that: the fixed clamping plate comprises angle steel and channel steel, wherein the angle steel is vertically arranged, a transverse plate is welded and fixed on one side of the angle steel, and the channel steel is welded and fixed on the upper part of the other side of the angle steel along the extension direction of the water stop belt; and the side wall of the channel steel is hinged with a movable clamping plate through a hinge.