Construction Technique And Quality Control Of Ellipsoidal Point-Supporting Glass Curtain Wall

Surface point-supporting glass curtain wall , with its beautiful distinctive modelling, rich individual character of building space and strong artistic appeal, is used more and more in today's application of large-scale public buildings. But at present, point-supporting glass curtain wall still exists limitations. First the glass biggest factory size is limited by glass itself mechanical properties and glass production restrictions; Then current point-supporting glass curtain wall need the glass drilling technology, which led to the edges of the hole stress concentration effect which will affect the bearing capacity of the glass panel, and further restricting glass size and thickness can not be too big.Moreover, this kind of technology's node detail design precision, the glass needs special glass manufacturers to design, construction workers'technical quality request special and so on. These make point-supporting glass curtain wall project design and construction cost more than box type glass curtain wall. And curved surface curtain wall has prominent technical limitations due to complex modelling and more component type.Therefore , in order to improve the construction quality of surface point-supporting glass curtain wall, solve the technical difficulties above, find a suitable construction method and quality control measures of surface point-supporting glass curtain wall, based on the construction technique and quality control of traditional glass curtain wall, combining with an actual project cases of Shouguang cultural center, through the analysis of the influence of various factors of curtain wall construction, the paper finds the main factors which influence curtain wall quality and its solving methods, summarizes construction methods of surface point-supporting glass curtain wall without holes which provide the corresponding reference for similar project.The resesrch began from the investigation and statistical analysis of existing construction of sphere and curved surface curtain wall, and find that mostly belonging to quality problems, among them, the curtain wall surface cohesion is bad, glass broken falls off, seepage is urgent need to address the problem. There are four main cause for the quality problem. Their are Use the traditional bonding method construction; Size of glass not divide rationally; Not undertake to operating personnel technical training; In the absence of such work instructions.In view of the above question, in wall construction process adopted the following measures: 1, the improvement of decorative frame. Let the pick claw refitting growth 300mm barge, 10mm thick, 90mm wide's rectangle glass clamp; 2, rationally divided the size of the glass. Differentiate the ellipsoid body size 460 a control unit, and according to the control unit of glass to list position numbers improved glass clip films, in glass four fixed groove design glass; 3, undertake to operating personnel technical training including theoretical interpretation, the actual operation, etc, and who exam qualified can mount guard; 4, formulate operation guide book which contains process principle, process flow and key points of construction.Because the improve of adornment skeleton, make the improvement skeleton facade installation is more convenient quickly, to ensure the impressions. According to the calculation results using this law construction than traditional triangle points lattice bonding method, the materials cost saves 118 million yuan, construction completed 15 days in advance, and direct economic benefits 123 million yuan.