Research And Application Of The Large All-steel Formwork In Construction

The large all-steel formwork is mainly applied in cast-in-place concrete wall.because of its construction speed, achieving the effect of water concrete walls and working more often, thereby the all-steel formwork reduces costs and overcomes the steel frame plywood formwork s defect of stiffness poor, easily deformation and plate Surface easily damaged weaknesses.The all-steel formwork develops fast in recent years.However, as the all-steel formwork is required the high technical requirements in construction, good management, large capital investment, and other factors, those results in it's bad applications in some cities.Therefore, in view of the current actual situation of the large all-steel formwork in application, this article is done a more detailed research of the large all-steel formwork design and application, as well as how to set up a formwork system for construction enterprise.It is given the detailed introduction of the formwork development of domestic and foreign, formwork structure, the formwork application in construction and so on in this paper.In view of the existing problems of some formwork projects in the construction in our country, with some project example in kunming, according to analysis of construction organization, each construction technological process,inspection, monitoring management and so on in accordance with the technical requirements in construction, the subject matter in kunming's some project has been discovered in application of the large all-steel formwork and has been conducted the detailed research for its solution:First, the formwork design principle is analysised and researched by the use of mechanical knowledge. As a result of the limited conditions, using ANSYS software as a tool, it is optimized the different program according to structure combinations of the large all-steel formwork, reducing the cost for the large all-steel form work's investment;Next, the solved factor that the large all-steel formwork construction is slowed down comes from the construction section by the reasonable division, to take the progress schedule regulatory measures, the reasonable arrangement tower crane position, the considering construction scale and the building complex degree whether to suit the large all-steel formwork construction, to adopt some measures to raise installation efficiency and consider whether to add the early strength agent.The number of allocation formwork is achieved according to the rational construction section, so as to enhance economic efficiency.The preventive measure and the government method have been drawn up according to the leakage on the floor and wall joints, spongy surface and so on other common quality deficiencies; Finally, construction enterprise, in ensuring project quality and meet the requirements of the construction period, in order to get optimal economic efficiency as the principle,establishes itself formwork system by utilized the grey system theory and fully using own existing resources reality, considering the engineering structure characteristic,existing machinery and equipment situation, construction management in organization, regional situation and the technological level of construction enterprises, the integration of design and construction and so on.The construction enterprise may establish professional construction team on formwork engineering to combine interior formwork resources of construction enterprise group if it has the adequate condition.In construction in the future, formwork engineering will gradually step onto professional road to contract individual by the specialized formwork company,by considering to call for bid.This will greatly enhance the quality of concrete and construction speed, thereby enhancing the reputation of construction enterprises and economic efficiency.With the rapid development of all kinds of high-rise buildings, the cast-in-place concrete structure project's proportion is also growing day after day.That the problem in construction is solved will surely play an important role for speeding up and ensuring construction quality, saving wood and reducing costs of formwork project, as well as promote the use the large all-steel formwork in the future.