From our processing and installation of the Guangxi Financial Plaza super high-rise steel structure project, underground 4 layer, 72 on the ground floor, building height of 325 meters, the building structure is composed of a concrete core tube and an outer frame steel structure component, 35-37 layer, 52-54 layer are arranged to strengthen the belt truss, the project is currently installed 28 layers of steel beam.

The construction of steel structure is a highly comprehensive work, is also a manifestation of a construction enterprise technology level and management level, the characteristics of the high-rise steel structure building construction: large investment, long construction period, the fund pressure. Steel structure engineering capacity, multi components, used in construction and stacking component interchange construction site is small, is a major feature of the construction of super high-rise steel structure. Super high-rise steel structure building installation standard is relatively high, the selection of materials (especially steel) and measurement of welding construction technology, have put forward higher requirements, natural conditions, settlement, deformation, the concrete shrinkage deformation, deformation of welding construction of many factors influence. Many in the downtown lots, transportation, environmental protection, space and other factors brought great difficulties to the construction layout. The choice of tower crane, the quantity and the position of the layout is very important, otherwise it will seriously affect the steel structure installation schedule.

At the beginning of 2014 5 the company project manager Du Junsheng as the project manager, set up 3 deputy manager and 4 production team leader, but also increase the construction workers, security guards, director of the office of management personnel, the current project management personnel to reach 15 people, conducted a clear division of labor, from organization management to ensure the production order for.

In the process of construction, more than 14 layers of double embrace inclined column and after the separation of the installation location is the focus and difficulty of the project. In April the project director Zhang Feng with the main contractors, supervision, management and owners to the high-rise steel structure project of Guangzhou East Tower site investigation, learning the advanced experience in the construction of their. The first solution to the problem of measuring technology of high-rise (set of measurement points, stable in the core barrel four angle on the concrete structure layer set once per 2-3), followed by the construction work surface is covered with a safety net and channel, and a temporary office (container) arranged in a steel structure hoisting work surface, greatly improves the precision of measurement and installation efficiency.

In order to improve the efficiency of heavy steel structure installation, the parameter range in the tower crane in 18 layer, 2 layer began to section steel column hoisting, floor by some 3 layer section for more than 50 layers to consider 4 layer section steel column hoisting, steel column hoisting take "four point method". Steel beam to take "two-point method hoisting, the implementation of the" three beam crane or four beam crane". Before the installation of steel beam, have dimensions on the beam position, number, and the connecting plate range and so on, to conduct a comprehensive review, confirmed to meet the requirements of design drawings for construction, connected with the hoisting beam and column bracket, cannot have the larger impact on column.

Construction of super high-rise steel structure is a technical difficulty and the complexity of the process are high work, how to continue to be improved in the mature process has been formed, is an important problem in our country at the present stage of construction industry practitioners should think about, installation and construction of super high-rise steel structure project of Guangxi Financial Plaza, make us triumpher steel construction group limited to a new stage in super high-rise steel structure installation.