Subway unballasted track ditch construction method and used formwork

A ballastless track and construction method technology, applied in the direction of the road bottom, buildings, etc., can solve the problems of difficult control of the longitudinal slope of the ditch bottom, inaccurate installation of the formwork, complicated construction procedures, etc., to reduce the probability of peeling, Simple and convenient demoulding, solve the effect of easy cracking

Active Publication Date: 2008-12-17
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing method of block construction of ballastless track ditch has the following disadvantages: when constructing the ditch in blocks, the bottom of the ditch needs to be constructed first, and the upper part, that is, the two sides of the ditch, can only be constructed after the bottom of the ditch reaches a certain strength. The construction of the side wall is not only a complicated construction process, but also the construction progress is relatively slow, the construction a

Method used

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  • Subway unballasted track ditch construction method and used formwork
  • Subway unballasted track ditch construction method and used formwork
  • Subway unballasted track ditch construction method and used formwork

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] The ballastless track ditch construction method is used to construct a straight line section of a subway track. The formwork 3 used in the construction has a groove-shaped cross-section and is composed of two symmetrical L-shaped formworks 31 and 32, each with a length of 2.5 meters. , two L-shaped formworks are connected at the bottom by hinges 4, and the upper part of the formwork 3 is connected with suspenders through bolts 2 at intervals of 1.25 meters. At the bottom of the rail 5, the crimping piece 6 is composed of a crimping piece 7 and a bolt 8.

[0023] Its construction process includes the following steps:

[0024] (1) Preliminary installation of ballastless track gutter formwork

[0025] Place one side of the suspender 1 with the buckle 6 under the rail, adjust the position of the suspender 1 so that the bottom of the rail 5 is between the buckle 6 and the suspender 1, tighten the bolt 8 on the buckle 7, and put the suspender The rod 1 is fixed, and the two...

Embodiment 2

[0033] The ballastless track ditch construction method is used to construct a subway track curve section project. The formwork 3 used in the construction has a groove-shaped cross-section and is composed of two symmetrical L-shaped formworks 31 and 32, each with a length of 2 meters. , two L-shaped formworks are connected at the bottom by hinges 4 to form an integral formwork 3, and the upper part of the formwork 3 is connected with suspenders 1 by bolts 2 at intervals of 1 meter, and two suspenders 1 are installed in total. The fastening part 6 is fixedly connected to the bottom of the rail 5 , and the fastening part 6 is composed of a fastening piece 7 and a bolt 8 .

[0034] Its construction process includes the following steps:

[0035] (1) Preliminary installation of ballastless track gutter formwork

[0036] Place one side of the suspender 1 with the buckle 6 under the rail, adjust the position of the suspender 1 so that the bottom of the rail 5 is between the buckle 6 ...

Embodiment 3

[0044] Adopt ballastless track ditch construction method to carry out construction to certain subway track project, the structure of the formwork used in construction is the same as embodiment 1, adopts hinge 4 to link multi-section formwork 3 in construction, the length of each section formwork is 3 meters, the top of formwork every Suspenders 1 are connected by bolts 2 at intervals of 1.5 meters.

[0045] Its construction process includes the following steps:

[0046] (1) Preliminary installation of the ballastless track gutter formwork: Fix the suspender 1 to the rail bottom of the rail 5, connect the two L-shaped formworks through the hinge 4 to form an overall formwork 3 with a groove-shaped cross-section, and use the hinge 4 Connect multiple templates 3, and hoist the templates 3 on the boom 1 through bolts 2;

[0047] (2) accurately adjust the length of the bolt 2 to control the height of the template 3;

[0048] (3) Concrete is poured on the bottom and both sides of th...

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Abstract

The invention discloses a construction method for subway unballasted track water ditch and used formworks thereof, belonging to the field of subway construction engineering. The construction method of the invention comprises the steps as follows: (1) a suspension-typed ballasted track water ditch formwork is arranged preliminarily and the formwork is arranged and suspended from the bottom of a steel rail by a hoisting rod; (2) the length of a bolt is adjusted so as to control the height of the formwork; (3) concrete is cast at the bottom and two sides of the formwork; (4) after the strength of the concrete achieves the design requirement, the suspended hoisting rod is removed and two formworks are folded towards the middle by hinges and demoulding is carried out finally to form a whole water ditch. The formwork of the invention consists of two symmetrical L-shaped formworks; the upper part of the formwork is connected with the hoisting rod by the bolt. The construction method of the invention can complete the construction of the water ditch at one time, ensures the construction precision, simplifies the construction procedure, reduces the construction difficulty, and improves the construction progress and the construction quality; the formwork of the invention facilitates demoulding, storage and transport, can be repeatedly used and reduces the construction cost.

Description

technical field [0001] The invention relates to the field of subway construction engineering, in particular to a construction method for a subway ballastless track ditch and a template used therefor. Background technique [0002] In recent years, with the continuous development of urban construction, traffic tension has become increasingly prominent. Therefore, in order to improve the quality of urban environment, improve urban traffic conditions, and achieve sustainable urban development, major cities have begun to build subways one after another. The quality of subway construction depends to a large extent on the construction level and technology of subways. The construction of the ballast track ditch is an important part related to the smooth implementation of the subway construction project. In the past, the construction method of the ballastless track ditch was to construct the ballastless track ditch in blocks. Firstly, the bottom concrete of the ditch was constructed...

Claims

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Application Information

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IPC IPC(8): E01F5/00
Inventor 殷明旻冯光福徐锡江刘大园李春霞庞玲
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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