High-temperature steam curing construction method for prefabricated bridge deck of UHPC steel-concrete composite beam without coarse aggregate

A technology of steel-concrete composite beams and construction methods, applied in the direction of manufacturing tools, bridges, bridge parts, etc., can solve the problems of high structural self-weight load, easy cracking of the bridge deck, and heavy design, so as to reduce the structural self-weight load and achieve good work performance , Lightweight and economical design

Active Publication Date: 2021-11-23
NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the traditional orthotropic steel bridge deck and steel-concrete composite beam structure have problems such as high structural self-weight load, bulky design, high cost, and easy cracking of the bridge deck.

Method used

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  • High-temperature steam curing construction method for prefabricated bridge deck of UHPC steel-concrete composite beam without coarse aggregate

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and Simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are used for descriptive purposes on...

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Abstract

The invention provides a high-temperature steam curing construction method for a prefabricated bridge deck of a UHPC steel-concrete composite beam without coarse aggregate. The method comprises the following steps that 10, steel bars are blanked and machined, specifically, the steel bars are machined and distributed in a centralized mode in a factory; 20, a mold is installed, specifically, a formwork of the bridge deck is installed, and the formwork comprises a bottom mold, a transverse side mold and a longitudinal side mold; 30, the steel bars and embedded parts are installed, specifically, an upper layer of steel bar net and a lower layer of steel bar net which are arranged in a spaced mode are installed on the formwork through the steel bars, and the embedded parts are installed on the formwork; and 40, concrete is mixed, specifically, a premix package with the concrete prefabricated and an additive and steel fiber formula package are included, and the premix package and the formula package are put into a stirrer till the concrete is mixed and discharged out of a station. According to the high-temperature steam curing construction method for the prefabricated bridge deck of the UHPC steel-concrete composite beam without the coarse aggregate, the self-weight load of the structure can be reduced, the design is lighter and more economical, and the common problem of cracking of the bridge deck and the like can be well solved.

Description

【Technical field】 [0001] The invention relates to the technical field of building construction, in particular to a high-temperature steam-cured construction method for prefabricated bridge decks of UHPC steel-concrete composite beams without coarse aggregate. 【Background technique】 [0002] According to incomplete statistics, as of 2016, there are about 101 bridges using UHPC in the United States, 93 in Malaysia, 87 in Canada, 55 in Europe, 7 in Oceania, 21 in Japan, and 4 in South Korea. As of the end of 2016, at least more than 30 bridges in China have adopted UHPC, of ​​which 5 are used for the main structure (such as main girder or arch rib), and most of the remaining bridges use UHPC for steel-UHPC light composite deck and structural maintenance Reinforced or wet seams. [0003] Although UHPC concrete technology has been used for a long time at home and abroad, there are very few applications in the prefabricated bridge deck of steel-concrete composite beams. Its prom...

Claims

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Application Information

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IPC IPC(8): B28B1/08B28B1/29B28B7/22B28B11/24B28B13/02B28B13/06B28B23/00B28B23/02E01D19/12E01D21/00
CPCB28B23/00B28B23/022B28B7/22B28B13/02B28B1/08B28B1/29B28B11/245B28B13/06E01D19/125E01D21/00
Inventor 蔺鑫磊王东伟王宏博兰胜强杨智勇张之广傅裕杨建林柏飞孙广浩赵泽苗张军柴勇
Owner NO 2 ENG CO LTD OF CCCC FIRST HIGHWAY ENG
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