The pipe gallery bridge is a unique project of a comprehensive pipe gallery at the overhead crossing. It is essential to ensure its quality and security due to its complex structure and stress state. Based on a pipe gallery bridge with a large cross-section and high loading, the beam and solid element models are established separately to research the stress of the bridge when it is under construction, completed and service stage. The results show that the stresses of the pipe gallery bridge are in good agreement with the current codes, and the results have been used for the design of the bridge.
In order to accurately assess the load carrying capacity and actual working condition of a newly constructed continuous girder bridge, the load test of a newly constructed three-span prestressed variable cross-section continuous girder bridge is taken as the engineering background, and the check coefficient of the static load test, relative residuals and other parameters are used to judge whether the indexes such as the strength and stiffness of the structure satisfy the requirements or not. The results show that the deflection and strain calibration coefficients are less than 1 and the relative residual value is not more than 20
The design management of large-scale construction project is very important.In the whole life cycle of construction project,it can realize the cost control and quota design.Taking a large-scale public building project as an example,this paper analyzes the rationality of architectural design management and its social and economic value.
钢结构厂房屋面围护结构通常采用压型钢板复合保温屋面系统,其有2种构造方式:一是檩条外露式结构,即底层压型钢板固定于钢檩条的上表皮,结构檩条外露;二是檩条暗藏式结构,底板压型钢板固定在钢檩条的下表面,使室内看不到檩条.檩条暗藏式双层屋面板设计做法为屋面檩条上面铺一层彩钢板,中间是保温棉,屋面檩条下固定一层彩钢板,好似给厂房做了吊顶,增加了厂房内部空间的美观性.因此受到设计师和业主的青睐,近年来在大型工业厂房中应用也越来越广泛.
This paper introduces the construction and application of the 300 m long basement drainage layer system in the Taiziwan New World Parent-Child Shopping Mall in Shenzhen.Through controlling the drainage pipe layout,gravel pavement,concrete protective plate construction and other processes,a novel process is proposed,including the slope of the drainage layer in sections,PVC tube type support formworks for support piers of cast-in-situ protective plates,and direct drainage system in the drainage layer.At present,the phased operation test has been conducted.The garage floor is dry without any water stains.After the whole system is put into use in the subsequent stage,appropriate dry conditions can be provided for the basement in case of failure of the active waterproofing system at the bottom.This provides a reference for waterproofing construction of similar high-level,ultra-deep and ultra-long basement engineering.
