Overview Membrane structure is a kind of high-strength film material and reinforced components (membrane structure or cable) through a certain way to produce a certain amount of pre-tensile stress to form a certain space shape, it can be used as a covering structure and can bear a certain external load. The membrane structure is widely used in all kinds of leisure sketches, light large-span non-column space or light roof structure because of its good self-cleaning, heat insulation, high strength and durability. Only under certain tension can the membrane structure have certain shape and rigidity, therefore, the membrane structure architecture shows the balance of force and is the most reasonable structural form. The use of light membrane materials, supplemented by flexible cables and light membrane trusses, can achieve the purpose of large span and covering large space.
The "1800 square meter membrane structure project of Dalian Laohutan international paddling grandstand" designed, manufactured and installed in 2002 is the image project of Dalian city. it was rated as a high-quality project (see figure 1). the large-scale eaves membrane structure and cable and membrane structures (membrane materials are French Ferrari FERARI1202T prestressed membrane materials) of Dalian Laohutan international paddling grandstand are the main stress parts and new roof systems of large-scale public buildings, the form and quality of the building structure directly affect the safety and use of the building function is still the first in China. The project is located in Hutan Paradise, with a design display area of 1800 ㎡. According to the standard value of foundation bearing capacity of 160kpa, a single arc vertical beam membrane structure is designed (as shown in Figure 2), of which there are 10 single arc vertical beams with a beam length of 29 meters and a total span of 10 meters. The structure has experienced a severe typhoon in Dalian (the 15th day of the first lunar month) on March 7, 2007 and ten years of use. It is still standing on the coast of Laohutan as new. Practice has proved that the large-scale eaves membrane structure is completely practical in harsh environments. feasible.
Based on many years of practical engineering experience, this paper introduces the matters needing attention and key technologies in the process of manufacturing, installation and tensioning of space membrane structure, and summarizes some problems that need attention in construction.
The construction process is completed by the owner, design, supervision, quality inspection and other units and departments. How to coordinate the work and management of all parties is one of the keys to ensure the construction period and construction quality. Therefore, in order to ensure the realization of these goals, we should pay attention to the following points to ensure that all aspects of work are coordinated:
(1) Develop a joint review system for the disclosure of design drawings, coordination of installation and design. The project department of the construction unit shall organize relevant technical personnel to cooperate with the design, fully consider the matching of the design and the overall installation plan of the construction, and participate in the coordination work such as drawing disclosure and joint review organized by the owner.
(2) Establish a regular meeting system. Regular meetings attended by the Owner, design, construction and supervision shall be held regularly to discuss the construction and cooperation of the project. Development of a symposium. For major technical problems in construction, relevant personnel of all parties should gather together to discuss and solve them together.
Due to the high quality requirements of membrane engineering construction technology, it is necessary to select skilled, responsible, experienced constructors and team leaders to organize various tasks, and sign the construction team's contract scope, quality and technical requirements, construction schedule, safety indicators and other responsibility letters. According to the needs of the project, the labor force should be reasonably allocated to prevent the phenomenon of work slowdown.
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