Abstract:P and C cable-stayed Bridges are composed of three elements of the substructure, beams, towers and cables, and steel cables extending from one or more tower columns along many points of the bridge span to support the upper structure. There are many influencing factors in the whole system. According to Wang Bohui et al. 's study on the ocean river bridge with a main span of 330 meters, 1. The most fundamental factor affecting the force of each part of the cable-stayed bridge structure is the combination of beam, tower and pier. 2.

Abstract:Cast-in-place box girder construction is widely used in highway bridge construction, and higher standards are put forward in the construction of cast-in-place box girder construction of Suzhou viaduct highway to ensure that the quality requirements of "beautiful line shape and smooth connection" are achieved.

Abstract:This paper introduces the design features, construction key techniques and technical and economic evaluation of the large-span prestressed concrete composite with simply supported inverse beams.

Abstract:1. The structural characteristics of the anchoring object are loose or soft soil structure. Such as soil slope, collapse pile in the way of the body, broken rock slope. It has the characteristics of low strength index, poor integrity, and easy to produce large deformation after applying anchoring force. It's rocky. Such as rock slope, underground cavern rock anchoring. It has the characteristics of relatively high strength index, relatively good integrity, and relatively small deformation after the application of anchoring force.

Abstract:Bingcaogang Jinshajiang Bridge in Panzhihua City, Sichuan Province is an extra-large highway and urban dual-purpose bridge, which is a key construction project during the "Ninth Five-Year Plan" period of the city. The bridge site is located in Bingcaogang, the political, cultural and economic center of the city. The bridge is the main passageway connecting Zaoziping and Bingcaogang, and serves as the transit function of National Highway 108. This paper mainly introduces the design and construction of the cooperative system composed of single-tower cable-stayed bridge and T-type rigid frame.

Abstract:Based on the construction practice of high slope anchor protection project of Xinyuan Expressway No. 2 in Shanxi Province, this paper puts forward some experiences for reference in rock slope anchor protection project construction.

Abstract:This paper introduces in detail the structure, function and use method of the man-hour statistics database management system specially developed for small and medium-sized production and processing enterprises.

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