Abstract:

Abstract:As a kind of spanning load-bearing building, bridge exists in the mountains, rivers, bays and cities of modern society in its colorful forms, and plays its unparalleled social functions. With the development of material industry, construction equipment, construction technology, as well as new testing methods, quality control methods and modern computer technology development and wide application, the technical development of bridge engineering has reached an unprecedented height!

Abstract:LSD hydraulic lifting system is a construction machinery for realizing the construction of super-island, super-large and super-heavy large-scale building components in the field of building construction, which adopts the construction method of assembling the building components on the ground, lifting and hoisting them into place through the joints, and requiring the components to maintain a high degree of balance in the process of the overall lifting. It adopts steel strand bearing, lifting jack cluster, computer control, hydraulic synchronization overall lifting principle.

Abstract:This paper describes the design of two 160m clear span steel-tube concrete arch bridges constructed by the transverse method on the Three Gorges Project's external transportation highway, the structural characteristics of the transverse structure, the monitoring and control of the whole construction process, the commissioning test, and the compression bar stabilization modeling test for the columns on the particularly slender arches. The paper describes the experience of participating in the practice of the two bridges and puts forward suggestions.

Abstract:This paper introduces the construction technology of the 123-meter-diameter double-layer spherical mesh shell of Zhangzhou Houshi Power Plant, which is the largest spherical mesh shell project in China, and the project adopts the hanging construction plan of small assembling unit, and installs the giant spherical mesh shell project with simple construction equipment, and the construction method is technically feasible, easy to install and economically reasonable. This paper also carries out the whole process of tracking analysis of the change of construction internal force on the construction method, and points out some problems that should be paid attention to when determining the construction plan of the mesh shell.

Abstract:This journal was published in 1999, No. 3 and No. 4 of this author's article "pressure type anchor cable and load dispersal type anchor cable in the application of reinforcement engineering" and "analysis of anchor cable type", now according to the request of some readers, after the author rearranged and enriched the relevant content, this journal will be published in two parts of the article for the benefit of the readers.

Abstract:This paper introduces the application of non-bonded prestressing technology in the South Kunming Railway Shizhai Anchor-pulled Pile Slab Wall Project and its technical keys.

Abstract:With the successful application of prestressing strand in Shenzhen City and Urumqi Airport, this technology has been popularized in our region. This paper combines the engineering practice, detailed introduction of the strand theoretical elongation value of the calculation, the actual elongation value of the measurement method and the value of the relevant considerations, in order to achieve a further understanding of the purpose of engineers and technicians.