China Steel Structure Design Status And Problems

In recent years the rapid development of China’s steel structure, is building a large number of span and high-rise steel structures, such as the Bird’s Nest, Water Cube, the National Grand Theater, CCTV, Shanghai Universal Centre, Guangzhou TV Tower, etc., these projects of steel structures greatly increase our design level.

Some of the projects designed by China reach to a new level, such as 361 m span arch saddle-shaped shell inclined - Nanjing Olympic Sports Center, 122 misoprostol lattice shells - Jinan Olympic Sports Center and other projects are new construction programs, the structure reasonable force to save steel, a good work in line with our national conditions.

But it should be noted that some major projects primarily designed by foreign countries, many project structure plan is not reasonable enough, steel is too big, cost staggering, do not meet China’s national conditions. The face of a large number of projects were implemented, our design system, design level, design standards, design quality, design personnel can not meet the quality, there are many pressing problems.
 
A design project level contracting resulting decline in the quality of design projects of subcontracting mainly is: the current design of the major design institutes rather arduous task, the contract process and some multi-disciplinary design of higher charges, while the steel parts is hard row to hoe, and labor effort are cheap, unwilling to undertake the task steel structure design, or lack of experience in steel structure design, it is often subcontracted to another unit of steel parts.

If a Shandong Sports Centre, formerly a major Beijing Design Institute, will subcontract to Xiamen, a steel part of the Design Institute, this Court will not suffer some of the design contracted steel. University. Examination by experts design, computational model, there are many earthquake concept questions.

The other layers of subcontracting the performance of song “qualified” or called “buy icon” and some units without qualification, to get works with the icon bought out the design, so that there are significant design quality risks. Comparing the current design market confusion, lack of legal management of the design quality, lack of strict inspection and supervision, arising from a number collapse of qualifications and design. Failure to regulate the market, strict qualification management will have serious consequences.

Analysis: Status of Building Steel Structure Design and problem 2, the design depth of less Design Institute of the design tasks to his drive to the processing enterprises, resulting in decreased quality of many of the design unit, a low level of steel structures designed to undertake engineering design mostly those who have just graduated PhD soon, the lack of practical experience, and lack of steel in the design of Zhi Shi, blindly copying Gui Fan, Tao Cheng Xu, right Guanjian technology does not conduct a study on the design of Chengguo heart Modi, Zhi give ‘component Bu Zhi map ‘to complete the task even, and some layout is just a simple single-line diagram, on the key “node design” shall be used regardless of the circumstances “all welded joints” or “full cast steel node” As for whether this node safety, structural soundness and out of mind will be free of the bottom can do, will be designed “node structure”, “bearing detailing”, “construction and installation” and so on to the processing enterprises.

Design institutes only do the “design “or the depth of the preliminary design, the construction plans to the processing plant, the lack of calculation processing software, in turn subcontract out construction drawing task, due to the lack of professional support of these sub-units of knowledge, the general design requirements are unclear, often done the drawings do not meet the original design requirements, the quality of serious risks.

Some processing plants in order to save steel, reduce costs, optimize blindly for steel, resulting in quality problems, such as ?project, the optimized result bar is too small, resulting in the construction process hundreds of bar instability.

To cause significant loss of national key projects. “Construction design” completed by the institute, which is already under the Ministry of Construction, Design Institute is the bounden duty, construction design must meet the requirements of the design depth, “construction design”, “deepen the design” is unclear, buck-passing, the situation should be corrected immediately.

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