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Qingdao, China

Liu J.,Zhejiang University | Yu F.,Zhejiang Sci-Tech University | Qi K.,Qingjian Group Co.
Applied Mechanics and Materials | Year: 2011

The increase in pile bearing capacity with time after installation is known as soil/pile set-up. A mechanism of pile set-up is discussed in detail and a three-phase model is suggested. A serious of low-strain dynamic tests on full scale pile was carried out in mixed soil for monitoring the increase of wave velocity and stiffness. Wave velocity and stiffness have similar increase trend, but the stiffness shows a larger increase rate. An optimized design procedure to incorporate the pile set-up effects is proposed. © (2011) Trans Tech Publications. Source


Zhang J.,Qingdao Technological University | Zhang T.,Qingjian Group Co.
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

The Swimming and Diving Hall in Qingdao Sports Center is constructed for the 11th National Games in China. As a complex grid structure with a long-span steel roof, its construction is difficult to control. The pulling haulm to promotion method is employed in the construction of this grid structure. In this paper, the adjacent pulling haulm promotion differences and the ascent of the whole pulling haulm promotion differences for this grid structure in the process of ascension are analyzed using finite element numerical analysis in detail. Research results show that the influences of promotion differences for this type of grid structure's stress are bigger, suggested that the grids adjacent pulling haulm promotion differences should be controlled within 1cm, the whole shell promotion differences should be controlled within 5cm. © 2011 IEEE. Source


Zhang J.,Qingdao Technological University | Zhang T.,Qingjian Group Co.
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011 - Proceedings | Year: 2011

Based on some stage hall grid structure adopts high altitude scattered expansion construction technology, the original construction technical scheme adopts a T-shaped scaffold to construct, but this scheme will influence the underground stage hall's construction, and its cost is larger, therefore recommend a bar supporting frame to be built as starting unit, then to form stable unit, then to dismantl scaffold for cantilever expansion construction. Using this new construction technology, we need to study the stability conditions of starting unit and stress and strain distribution of construction assembly process, to satisfy grid structure construction standard. Therefore, this article analyzes the grid construction according to construction steps in detail, altogether 45 construction steps, analyzes starting unit's the change rule of the stresses and deformations, analyzes the stresses and deformations of the cantilever expansion part, analyzes construction arch of the grid structure. The analysis results show that the new construction technology is a feasible construction scheme. © 2011 IEEE. Source


Liang J.,Qingdao Technological University | Bing L.,Qingjian Group Co.
Research Journal of Applied Sciences, Engineering and Technology | Year: 2012

In this study, using the advanced technology and the method such as the IT technology, the Earth remote sensing and the remote sensing technique, the digitization and the intellectualization of the environmental protection material were realized. Moreover, the three problems of the digital environmental protection intellectualization platform are demonstrated emphatically: the major function, the system network construction chart, the system overall construction chart. It supplied a feasible method for the establishment of the digital environmental protection intellectualization platform. © Maxwell Scientific Organization, 2012. Source


Zhang J.-G.,Qingdao Technological University | Zhang J.-G.,Dalian University of Technology | Gao K.-Y.,Qingdao Technological University | Zhang T.-B.,Qingjian Group Co.
Gongcheng Lixue/Engineering Mechanics | Year: 2012

The comprehensive gymnasium of the Ocean University of China is a hyperbolic paraboloid steel grid structure constructed for the 11th National Basketball Games. It is one of the key construction projects in Qingdao. To develop the installation scheme, the characteristics of the structure and construction site were considered, and a new construction method which is cantilever extended assembly technology with a strip-type support frame was used for the grid structure to avoid the erection of full hall scaffold effects on lower construction. The stability factor of starting elements, cantilever expansion sequence and the size of the element were analyzed by using ANSYS softwares. The stability requirement of the starting unit, sequence of expansion and the number of the expanding units were put forward for the structure in this construction method. Source

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