Construction method of locating device for drainage ditches of railway embankment

Abstract

The invention discloses a positioning and constructing method for excavating drainage ditches of railway roadbeds. The positioning and constructing method includes designing and machining positioning molds on the basis of design drawings of the drainage ditches of the roadbeds; determining two uphill apexes and a position finder insertion point of each excavated end of each foundation pit according to the design drawings on the basis of constructed wet masonry sheet and stone angular walls, excavating a foundation ditch with the length of 1-2m at first, inserting two ends of each position finder into the corresponding insertion points, drawing a wire via each two corresponding uphill apexes so as to excavate the corresponding foundation pit of an upper port of the corresponding drainage ditch, and drawing the wires via downhill foot points after the foundation pits are completely excavated. The positioning and constructing method has the advantages that the elevation of the bottom of each foundation pit can be controlled, drainage slopes can be smoothly formed, side slopes can be smoothly trimmed by the aid of the slope toe and slope crest wires, and accordingly excavation and trimming can be controlled; the multiple position finders can be integrally connected with one another, so that an integral construction merit can be formed, and the construction efficiency can be improved; the foundation pits of the drainage ditches of the roadbeds can be excavated, positioned and trimmed accurately and orderly by the positioning and constructing method, and accordingly the engineering construction quality can be guaranteed.

Description

technical field [0001] The invention relates to a locating construction method of a railway roadbed drainage ditch locator. Background technique [0002] With the rapid development and large-scale construction of passenger dedicated lines and high-speed railways in my country, railway subgrade drainage ditches are mostly designed with prefabricated blocks or mortar rubble. Hanging line piling, and the slope of the side wall of the foundation pit and the longitudinal slope of the drainage ditch cannot be guaranteed. There are many and inaccurate staking points for on-site construction, the quality of the construction slope is poor, it cannot be taken out during and after construction, the investment is large, it cannot be reused or the turnover is small. SUMMARY OF THE INVENTION [0003] The present invention provides a positioning method for excavation and trimming of foundation pits of railway subgrade drainage ditch in order to avoid the shortcomings of the above-mention...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development and large-scale construction of passenger dedicated lines and high-speed railways in my country, the design of prefabricated blocks or masonry rubbles is often used in railway subgrade drainage ditches. In the excavation process of traditional subgrade drainage ditch foundation pits, multiple measurements, Hanging piling, and the slope of the side wall of the foundation pit and the longitudinal slope of the drainage ditch cannot be guaranteed

On-site construction stakeout points are many and inaccurate, the construction quality of the slope is poor, it cannot be taken out during and after construction, the investment is large, and it cannot be reused or the number of turnovers is small

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