CN103397600A

CN103397600A - Method for arranging water stops in box body jacking process

Info

Publication number: CN103397600A
Application number: CN2013103562133A
Authority: CN
Inventors: 周锐; 薛晓晨; 张志伟; 赵长亮; 刘旭杰
Original assignee: China Railway Sixth Group Co Ltd; Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
Current assignee: China Railway Sixth Group Co Ltd; Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2013-11-20
Anticipated expiration: 2033-08-15
Also published as: CN103397600B

Abstract

A method for arranging water stops in a box body jacking process comprises the following steps: forming grooves in the middle of the front end surface of each box body and the inner side edge part of the box body respectively during prefabrication of the box body, and pre-burying one sides of water stops into concrete on the inner sides of the grooves; arranging plastic extrusion plates on the upper and lower surfaces of the outer parts of the water stops in the grooves, and arranging fair-faced concrete plates between the plastic extrusion plates and the top and bottom surfaces of the grooves; tightly sealing the outer side end ports of the grooves; setting up a template at the joint of every two box bodies and casting concrete. According to the method, two circles of grooves are respectively formed in the middle of the front end surface of each box body and the inner side edge part of the box body during prefabrication of the box body, meanwhile the water stops are pre-buried in the grooves, and the whole structure of each water stop is not exposed, so that the problem of damage caused by jacking and earth cutting operations of an excavator in the box body jacking process is avoided; besides, construction of the water stops is finished at one step during prefabrication of the box bodies, and after-treatment is not needed, so that time and labor can be saved; in addition, compared with the method of implanting after chiseling, the method provided by the invention shortens the construction period.

Description

Waterstop method to set up in the box-body jacking process

Technical field

The invention belongs to the rail facility technical field of construction, particularly relate to waterstop method to set up in a kind of box-body jacking process.

Background technology

Along with the develop rapidly of urban construction, volume of transport is also in continuous increase.When existing railway and highway grade crossing, common way is to build frame bridge under existing railway, with this, alleviates and due to rail track, in city, passes the traffic congestion phenomenon that causes.When some frame bridge or because service life is long or because inner width is too small, can't meet the requiring of traffic the time, just need to displace with new frame bridge old frame bridge.Method of replacing commonly used is jacking at present, and this method is that limit removal of old framework bridge and the soil body lateral dominance that digs out this bridge below will form more piece casing below jacking from the existing railway one or both sides to existing railway of frame bridge main body with jack.For prevent the new frame bridge in use adjacent casing seam crossing occur leaking, common way is at its front end annular end face middle part and inside line, pre-buried one to enclose waterstop respectively when casing is prefabricated, concrete grammar is that half of waterstop is embedded in to the inside concrete of casing front end, second half is positioned at casing front end outside, then at the outside supernatant water plate that coats of the waterstop that exposes, carry out afterwards the box-body jacking construction.But, there is following point in this waterstop method to set up: in the box-body jacking process, although the waterstop outside is coated with rinsing plate, but because being gives prominence to outside, therefore the waterstop outside at casing front end base plate and basil place still very easily is subjected to the impact of excavator jacking digging and occurs damaging, thereby loses stagnant water effect; In addition, after next joint box-body jacking is in place, before and after two joint casings need cutting with the top nest of jack be used to jacking is set last joint box back while closing up, then the waterstop outer end on a rear joint casing front end is against on last joint box back face, in the junction of two joint casings, build template concreting afterwards, thereby nuzzled in the concrete of last joint box back in advance in the waterstop outside of a rear joint casing front end, form thus waterproof construction.Due to box-body jacking in place after again tissue cut operation and be easier to destroy after the waterstop of a joint casing front end, and the destruction face large, be difficult for remedying.In addition, if not by in the concrete of the pre-buried inlet body of waterstop front end, box-body jacking also needs independent establishment officer to cut operation after in place, and not only labour intensity and engineering quantity are large, and will certainly extend the duration.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide waterstop method to set up in the box-body jacking process of a kind of effective reduction of erection time.

In order to achieve the above object, in box-body jacking process provided by the invention, the waterstop method to set up comprises the following step that carries out in order:

1) at its front end face middle part and position, inside edge, form respectively the groove that a circle is square shape during prefabricated box, simultaneously two sides of enclosing waterstops are embedded in the concrete of above-mentioned groove inboard along the length direction of casing respectively, opposite side is exposed in groove;

2) on the outside top and bottom of the waterstop that is positioned at groove, one deck extruded sheet is set respectively, then between extruded sheet and groove end face and bottom surface, one deck rinsing plate is set respectively, so that groove is filled up;

3) at the outside last layer extruded sheet that coats of the waterstop that is positioned at groove, so that groove is filled up;

4) all use the transparent adhesive tape shutoff tight groove outside port;

5) adopt jacking commonly used successively the more piece box-body jacking to be put in place, then the extruded sheet in groove and rinsing plate are all rejected;

6) two joint casing seam crossings are built template in front and back, and then concreting, utilize concrete that the space in groove is filled up, and thus two joint casings are linked together, and make simultaneously waterstop just be positioned at the seam crossing of two joint casings.

Waterstop in described groove is middle buried water stop, and the waterstop in groove is the external labeling type waterstop.

The thickness of described extruded sheet is 5cm.

In box-body jacking process provided by the invention, the waterstop method to set up is, when prefabricated box, its front end face middle part and position, inside edge are formed respectively to a circle groove, the waterstop of nuzzling in advance in groove simultaneously, so that outside the total of waterstop all is not exposed to, like this in the box-body jacking process with regard to not there will be the impact that is subjected to excavator jacking digging the problem that causes damage; In addition, during prefabricated box, waterstop once can be constructed complete, need not carry out post-processed, therefore can be time saving and energy saving; In addition, than cutting rear implantation, the duration shortens; Less investment, only need to drop into several cubes of extruded sheets and rinsing plate gets final product.

The accompanying drawing explanation

Fig. 1 is box body wall lateral cross section sectional view in waterstop method to set up work progress in box-body jacking process provided by the invention.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, waterstop method to set up in box-body jacking process provided by the invention is elaborated.

As shown in Figure 1, in box-body jacking process provided by the invention, the waterstop method to set up comprises the following step that carries out in order:

1) at its front end face middle part and position, inside edge, form respectively the groove 2 that a circle is square shape during

prefabricated box

1,6, simultaneously a side of two circle waterstops 3 is embedded in the concrete of above-mentioned

groove

2,6 inboards along the length direction of casing 1 respectively, opposite side is exposed in

groove

2,6; Waterstop 3 in its further groove 2 is middle buried water stop, and the waterstop 3 in groove 6 is the external labeling type waterstop;

2) on the outside top and bottom of waterstop 3 that are positioned at groove 2, one deck extruded sheet 4 is set respectively, the thickness of extruded sheet 4 is 5cm, then between extruded sheet 4 and groove 2 end faces and bottom surface, one deck rinsing plate 5 is set respectively, so that groove 2 is filled up;

3) at the outside last layer extruded sheet 4 that coats of the waterstop 3 that is positioned at groove 6, so that groove 6 is filled up;

4) all use the transparent adhesive tape shutoff

tight groove

2,6 outside ports;

5) adopt jacking commonly used successively 1 jacking of more piece casing to be put in place, then extruded sheet 4 and rinsing plate 5 in

groove

2,6 are all rejected;

6) two joint casing 1 seam crossings are built template in front and back, and then concreting, utilize concrete that the space in

groove

2,6 is filled up, and thus two joint casings 1 are linked together, and make simultaneously waterstop 3 just be positioned at the seam crossing of two joint casings 1.

Claims

1. waterstop method to set up in a box-body jacking process, it is characterized in that: described waterstop method to set up comprises the following step that carries out in order:

1) at its front end face middle part and position, inside edge, form respectively the groove (2 that a circle is square shape during prefabricated box (1), 6), simultaneously a side of two circle waterstops (3) is embedded in to above-mentioned groove (2 along the length direction of casing (1) respectively, 6) in inboard concrete, opposite side is exposed at groove (2), 6) in;

2) on the outside top and bottom of the waterstop that is positioned at groove (2) (3), one deck extruded sheet (4) is set respectively, then between extruded sheet (4) and groove (2) end face and bottom surface, one deck rinsing plate (5) is set respectively, so that groove (2) is filled up;

3) at the outside last layer extruded sheet (4) that coats of the waterstop that is positioned at groove (6) (3), so that groove (6) is filled up;

4) all use the transparent adhesive tape shutoff tight groove (2,6) outside port;

5) adopt jacking commonly used successively more piece casing (1) jacking to be put in place, then by groove (2), the extruded sheet (4) in (6) and rinsing plate (5) are all rejected;

6) two joint casing (1) seam crossings are built template in front and back, then concreting, utilize concrete that the space in groove (2,6) is filled up, thus two joint casings (1) are linked together, make simultaneously waterstop (3) just be positioned at the seam crossing of two joint casings (1).

2. waterstop method to set up in box-body jacking process according to claim 1 is characterized in that: the waterstop (3) in described groove (2) be middle buried water stop, and the interior waterstop (3) of groove (6) is the external labeling type waterstop.

3. waterstop method to set up in box-body jacking process according to claim 1, it is characterized in that: the thickness of described extruded sheet (4) is 5cm.