Movable greenhouse and method for conducting winter concrete ballast bed construction through the same

A technology for concrete and greenhouse, applied in the direction of track, road, track maintenance, etc., can solve the problems of difficulty in the maintenance and construction of concrete track bed

Pending Publication Date: 2020-10-30
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The second purpose of the present invention is to provide a method for constructing concrete track beds in winter by using mobile greenhouses, which solves the problem of difficult maintenance and construction of concrete track beds in winter rail transit in the north; Calculate the energy consumption per unit time of a single mobile greenhouse, and provide a theoretical and practical basis for selecting a heater that is both energy-saving and environmentally friendly and meets the construction of concrete track beds in winter

Method used

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  • Movable greenhouse and method for conducting winter concrete ballast bed construction through the same
  • Movable greenhouse and method for conducting winter concrete ballast bed construction through the same
  • Movable greenhouse and method for conducting winter concrete ballast bed construction through the same

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Embodiment 1

[0104] Such as Figure 1-Figure 3 As shown, a mobile greenhouse includes a mobile car 1, a heater 2, a flame-retardant cotton cloth 3, and a steel wire rope 5. The mobile car 1 is a three-dimensional structure welded by square steel, including a beam 11 and a longitudinal beam 12, The outer side of the longitudinal beam 12 is welded with a small pulley support column 13, and the top of the small pulley support column 13 is welded with a small pulley 14;

[0105] Both ends of the steel wire rope 5 are provided with buckles 6, which are detachably connected to the rails 4 of the ballast bed. Pulley 14, the wire ropes 5 that pass through the small pulleys 14 on both sides of the mobile trolley 1 respectively are parallel to each other;

[0106] The four corners of the bottom of the mobile trolley 1 are equipped with universal simple pulleys 15 adapted to the ballast rail 4, and the lower beam 11 of the mobile trolley 1 is welded with a heater support frame 16, and the heater sup...

Embodiment 2

[0188] Application background: The first phase project of Hohhot Rail Transit Line 1 starts from Sanjianfang Depot in the west, and goes east along Xinhua West Street to Baita Parking Lot. There are 20 stations on the main line, one depot at the west end of the line, and one parking lot at the east end of the line. The total track laying length of the whole line is 69.7km, including 51.7km track laying for the main line and 18km track laying for the field section. A total of 5 track laying bases are set up for the whole line. According to the overall construction period arrangement and the handover of the working surface, about 70% of the track laying on the whole line will be constructed in winter.

[0189] This area belongs to the mid-temperate continental monsoon climate, with obvious seasonal climate changes and large differences. Its characteristics are: long and severe winter, short and hot summer, and severe climate change in spring and autumn. The average temperature ...

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Abstract

The invention discloses a movable greenhouse comprising a movable trolley, a fan heater, flame-retardant cotton cloth and a steel wire rope. The movable trolley is covered with the flame-retardant cotton cloth; the movable greenhouse is simple to manufacture, low in resource investment and high in turnover utilization rate, and the effect of running water maintenance construction is achieved; thegreenhouse is small in heat storage area, the heat preservation and heat storage maintenance effects of concrete are effectively improved, the early-stage solidification strength of a concrete ballastbed is improved, the running condition of a rail car is met, the construction progress is improved, the economic effect is good, and energy conservation and environmental protection are achieved. Themovable greenhouse is convenient to construct and operate, low in potential safety hazard and high in safety and reliability. The invention further discloses a movable greenhouse and a method for conducting winter concrete ballast bed construction. The method comprises the steps of concrete mixing, movable greenhouse erecting, concrete pouring and maintenance and winter concrete ballast bed construction quality and inspection. The problem that the northern winter rail transit concrete ballast bed is difficult to maintain and construct is solved; through the structural size and the arrangementdistance of the movable greenhouse, the unit time energy consumption of a single movable greenhouse is accurately calculated, and theoretical and practical bases are provided for selecting a warm airblower which is energy-saving and environment-friendly and meets concrete ballast bed construction in winter.

Description

technical field [0001] The invention relates to the technical field of rail transit construction, is suitable for winter concrete track bed construction in northern China, and specifically refers to a mobile greenhouse and a method for using the same to carry out winter concrete track bed construction. Background technique [0002] With the continuous development of economy and society, rail transit construction projects are also developing day by day. In the past, after the winter in the northern region, affected by the cold weather, it was difficult to maintain the concrete after pouring. When the ambient temperature drops to 0°C and below, the water in the concrete freezes, the hydration of the cement stops, and the strength does not increase. If the newly poured concrete is frozen, the volume of the water frozen increases by about 9%. After returning to normal temperature curing, the porosity in the cement paste will increase significantly compared with normal concrete,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B29/00E04H1/12E04B1/343C04B40/02C04B28/00
CPCC04B28/00C04B40/0263E01B29/005E04B1/34336E04B1/34352E04H1/1205C04B14/02C04B14/06C04B18/08C04B2103/0068
Inventor 麻永华张伟华陈晖伍绍红纪学伟寇卫国周向国朱庆航罗青松孙杨王志刚
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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