Abstract:Lupu Bridge is the world's largest span of all steel structure basket type tie rod arch bridge, steel arch rib installation adopts cantilever lifting, cable-stayed cable bearing construction method, this paper introduces the application and construction technology of OVM250 cable system for cable construction.

Abstract:The construction of the beam closure section is generally divided into three ways. For the simple cantilever beam with hanging holes and the T-type rigid frame with hanging holes, the joint section is the hanging beam. For the continuous beam and the continuous T-type rigid frame, the closing section is the connection of the two beams. The third type is the construction technology of mid-span hinge section. The second type, such as Suzhou Shishan Bridge, Guangzhou Luogang Bridge; And the third type such as Taipei Guangfu Bridge and so on.

Abstract:This paper introduces the technical advantages, structure, principle and construction process of OVM vacuum assisted grouting system, main equipment, technical requirements, points for attention, application of metal bellows in vacuum assisted grouting system and implementation of OVM vacuum assisted grouting project.

Abstract:This paper introduces the anchorage reliability, anti-fatigue performance, anti-corrosion performance, cable adjustment and cable force test of OVM strand cable.

Abstract:2.2 Soil slope Stability Analysis Circular Arc Method 2.2.1 Basic Principles The calculation is based on the ultimate equilibrium stability of soil slope. The natural homogeneous soil slope loses stability, and the sliding surface is curved, as shown in Figure 5. Usually the sliding surface is close to the arc, which can be calculated by the arc, called the arc method. The arc method was first developed by Swedish scientists. Sweden, which is located in the eastern half of Scandinavia and has a narrow north-south terrain, has a large area of thick, high-sensitivity clay deposited during the glacial period and the post-glacial period. Disturbing the structure of soil during the construction of houses and railways reduces the strength of soil.

Abstract:Application of OVM pressure distributed anchor cable in dam foundation reinforcement engineering

Abstract:The deterioration of the geological environment has caused various geological disasters to occur, which directly threatens the safety of people's lives and property, and has been paid more and more attention by the Party and the government. According to the control factors and characteristics of landslide construction, this paper has found out a set of effective safety management methods and measures to effectively curb the geological disaster construction safety accidents, and received more obvious results.

Abstract:This paper introduces the advantages, supporting technology and improvement of eccentric pipe drilling tool.