1, the importance of the application of new technology in Construction Engineering
Construction engineering construction is the key to construction, and the construction is the core of construction engineering, and it is the fundamental guarantee of building quality. Technology application in the construction, and the construction of the efficiency and quality of the impact of the fundamental. Construction technology is advanced, it will improve the efficiency and quality of construction; construction technology is backward, it will hinder the efficiency and quality of construction. In recent years, the construction of China's construction engineering technology continues to be innovative, the construction of China's construction level is therefore a great development. However, the existing construction technology and the requirements of social development, there is no small gap, but also can not fully meet the development requirements of the productive forces. So, it is very important to apply new technology to construction engineering construction. At this point, the construction of the construction unit to be with the times of philosophy, forever on the application of new technology initiative and enthusiasm, eliminate backward construction technology, learning, learn from other people's advanced technology, and increase investment, its own research and development new construction technology, and in all links of the construction to strengthen supervision, so that the construction of system, science and technology, continuous, comprehensive, finally realize the improvement of the efficiency of construction, improvement of economic benefits, drive and help to the development of the society.
2, the application of new technology in building construction
In the new development period, China is promoting the establishment of scientific development concept, building a socialist harmonious society and promoting social sustainable development. Which has the specific requirements of building a resource-saving and environment-friendly society. With the development of economy, construction industry is also developing rapidly. The construction industry is changing the mode of the past, from labor intensive to technology intensive change, giving full play to the practical role of science and technology as the first productive force. New technology in building engineering construction to continue to promote and use, broke through the traditional construction technology, the bottleneck, the construction of the high difficulty of construction, greatly accelerated the construction speed, improve the construction efficiency, ensure the construction safety, and ultimately achieve the economic benefits of the upgrade. In the present construction of construction projects, there are ten new technologies. They include special steel connection technology, large volume concrete construction technology, enterprise management technology and enterprise computer technology, etc..
Construction of the new technology has brought many of the benefits of the expected benefits. For example, bridging working for in the soft soil, the service life of the deep foundation will due to ground subsidence and collapse greatly reduced, while the deep foundation pit support technology solves this problem. Deep foundation pit supporting technology in bridge structure design, in order to the basic pursuit of stability, the lower level of the collapse problem is solved by effective means, so that the deep foundation of life greatly extended. For example, in the construction of the building more attention to energy-saving emission reduction requirements. The construction personnel with careful design, bearing capacity of the hollow brick to replace the traditional large supplies of solid brick, greatly saving the construction materials, reduce the foundation bearing the pressure of the construction body, so that the construction of life can be extended.
3. The practical application of the new technology in building construction
(1) vacuum preloading method for soft soil foundation reinforcement technology. Vacuum pre pressing method in soft soil foundation reinforcement technology in the reinforcement of soft soil foundation area, sand well, plastic drainage plate, sand cushion is spread on the ground, covering sealed membrane, the isolation between the soft soil, atmospheric, by embedding in the bedding sand filter pipe, air exhaust vacuum equipment, in order to film in the air discharged effectively; creating a pressure difference inside and outside the membrane to become the load acting on the foundation. Foundation along with the constant increase of the stress of the consolidation degree of consolidation. The stress in the soil is equal to that of the soil, and the soil stress at the time of the vacuum is the consolidation degree and the vacuum pressure product value. The vacuum degree in the sealing film should be maintained at 80kPa. Sand well, plastic drainage plate depth range of consolidation degree should be above 85%; filter pipe around should fill cover thickness ~ 200mm sand, permeable material. The number of vacuum equipment to be pumped to the device can be determined by the vacuum area. When the bearing capacity of the foundation is higher, it should be combined with the load and the dynamic compaction, the composite reinforcement; the pre press, the building under the load, the settlement should meet the design requirements. The technology is suitable for the construction of soft soil foundation, especially in the marine, lacustrine and fluvial deposits.
(2) large steel structure sliding construction technology. In large span space structure, and steel parts installation and construction process, in order to improve the construction, reduce the amount of falsework and save mechanical equipment, select the installation construction technology of slip. Slip technology, namely on the side of buildings take construction platform, on both sides of the building in the laying of the chute, all components of the construction are on the platform to complete the assembly, and assembly, traction slip through the traction equipment. In the process of structural sliding design, the stress performance of the sliding mode should be checked strictly, and the internal force and deformation of the structure member should be ensured to meet the requirements of design and specification. At the same time, to accurately calculate the slip traction, when the steel and the steel surface sliding friction, the coefficient of 0.12~0.15 is appropriate; in the rolling friction process, the friction coefficient of the rolling shaft position is appropriate; the friction coefficient is 0.08, the coefficient of sliding friction is 0.1. This technology is mainly used in the construction operation of the large span space truss and the flat roof of the steel structure. In particular, the structure of the crane is difficult to construct.
(3) modular steel structure frame assembly and hoisting construction technology. For modular steel structure assembly and hoisting construction technology, the construction of a large ultra high steel frame structure is effectively divided into frame, and then, on the basis of the lifting capacity of the corresponding equipment, some pipelines, etc., in order to reduce the height of the operating conditions of the crane equipment, the framework of single module. From the application effect, the application of this kind of construction technology has the following several aspects: first, it can effectively reduce the effect of wind load and temperature, and it can effectively reduce the difficulty of large amount of high altitude operation. Second, the module of the framework of the ground assembly process, can effectively reduce the amount of scaffolding erection, the actual operation process, just take part of the simple scaffold can complete the construction work. For the technical indicators, to meet the construction quality acceptance specification, field equipment, industrial pipe welding engineering construction and acceptance specification and building foundation treatment technology specification, is suitable for steel structure frame overall height over 50m construction requirements.
4, the conclusion
As reported, a new construction technology, has very important effect on building construction. It can reduce the cost of construction, improve the construction efficiency, but also to protect the safety of the construction. Its superiority, it is the traditional construction technology can not match.
New construction technology is applied in the construction of construction, which is a great progress and innovation in the construction industry. On the new technology in the construction of the problem, technical personnel should pay more attention, increase the technical difficulty of the breakthrough, so that the new technology to truly serve the construction industry.
Reference
Guo Shaokang. The application of new technology in building engineering construction (J). Doors and windows, 2013 (4).
Li Qiang, Zhang Qianqian,. The application of new technology in building engineering (J). Heilongjiang science and technology information, 2013 (10).
(3) the history of Hailin. On the application of new technology in building engineering (J), 2008 (13) of Chinese high-tech enterprises.