Waterproof structure of high speed railway ballastless concrete bridge continuous concrete carriageway plate system
A high-speed railway and concrete technology, applied to roads, bridges, tracks, etc., can solve problems that are difficult to measure and affect the normal operation of high-speed railways, and achieve the effects of simple construction, reduced construction and maintenance, and extended service life
Inactive Publication Date: 2015-08-05
王仲辰
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Problems solved by technology
It is undeniable that the normal operation of the high-speed rail has been affected, and the subsequent use and maintenance costs and economic losses will be incalculable
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[0048] Sliding layer 2 structural waterproof implementation: cast-in-place concrete base plate 10, after forming, the two sides of the concrete base plate have a structural waterproof sealing cavity 9 shape and arc male corners, and the radius of the arc is 1 / 4 of the thickness of the concrete base plate 300mm One is that R75mm is appropriate, and the sealed cavity is located above the sliding layer horizontal interface port 7, such as image 3 , Figure 4 and Figure 5 Sealing cavity molding process: a waterproof and sealed molding mold 12 can be placed at the bottom of the concrete base plate mold. The mold is a foldable rubber mold shell 14 reinforced by polyester fibers and a rubber sponge mold core 15. The concrete base plate is completed. The form 13 of the final demoulding process is taken out by pulling. It can also adopt a disposable structure waterproof sealing molding mold, which can be removed after molding. The molding mold can be made of plastic-encapsulated pol...
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Abstract
The invention discloses a waterproof structure of a high speed railway ballastless concrete bridge continuous concrete carriageway plate system, replaces a waterproof method which adopts a polyurea material on a bridge deck originally, solves the problem of negligence of preventing rainwater hazards at horizontal boundary planes and vertical boundary planes between continuous concrete carriageway plate system components in the prior art, and effectively controls the humidity strain of a concrete carriageway plate and damage of wet expansion stress of a concrete base plate due to long-time rainwater adsorption of the boundary planes. The waterproof structure has unique reliability and is economic, and the maintenance cost is greatly reduced. More importantly, the operation safety of the high speed railway ballastless concrete bridge continuous concrete carriageway plate system is improved, and the service life of the high speed railway ballastless concrete bridge continuous concrete carriageway plate system is prolonged.
Description
technical field [0001] The invention relates to a waterproof structure for a continuous concrete slab system of a ballastless concrete bridge on a high-speed railway. Background technique [0002] my country's high-speed railway is a domestic construction project that introduces a complete set of foreign construction technologies. At present, the waterproofing of the continuous concrete slab system of the ballastless concrete bridge of the high-speed railway is: after the concrete bridge is installed, the bridge deck is sprayed with polyurea waterproof coating as the main waterproofing measure. After the waterproof layer is sprayed and before the concrete base plate is poured, a slip layer composed of non-woven fabric and plastic film is laid. After the cast-in-place concrete base plate is completed, the prefabricated concrete road slab is usually installed on-site by factory prefabrication, and then poured on site. The prefabricated concrete track slab is connected into a ...
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Inventor 王仲辰
Owner 王仲辰