steel structure elevator shaft of Hebi Exhibition Center Jiangsu Europe and America steel structure curtain wall technology Co., Ltd., formerly known as Jiangsu Bayi grid structure Group Co., Ltd., was founded in 1956, under the General Logistics Department. In 2006, the personnel of the enterprise were divided. After the reorganization of the backbone of the engineering and technical management personnel of the enterprise, Jiangsu Euro American steel structure curtain wall technology Co., Ltd. was established. It is the approved first grade qualification for steel structure engineering contracting, first grade qualification for building curtain wall engineering contracting, third grade qualification for general construction contracting, metal door and window engineering contracting, foundation and foundation engineering contracting, and construction decoration engineering contracting. At the same time, it has three design qualifications of steel structure, curtain wall and decoration engineering. It is a large-scale comprehensive construction enterprise integrating steel structure, building curtain wall, metal doors and windows, foundation and foundation as well as building decoration. It is a high-tech enterprise in Jiangsu Province, a private high-tech enterprise and a provincial science and technology research and development center. Three construction methods of steel structure grid structure 305019209 Hebi Convention and Exhibition Center steel structure I. high altitude assembly method steel grid is installed by high altitude assembly method. Firstly, the assembly support is set up at the design position, and then the components of grid structure are lifted to the design position in the air by crane (or block) and assembled on the support. This method sometimes does not need large-scale lifting equipment, but the amount of assembly support is large, and there are many high-altitude operations. Therefore, it is more suitable for the steel grid connected by high-strength bolts, made of section steel or the steel grid connected by bolt ball joints. At present, there are still some steel grids constructed by this method. 2、 The whole installation method is to firstThe grid structure is assembled as a whole on the ground, and then it is lifted to the design position by lifting equipment to fix it. This kind of construction method does not need high assembling support, so there is less work at high altitude, and it is easy to weld quality, but the lifting equipment with large lifting capacity is more complex. Therefore, this method is suitable for the steel grid with spherical joints (especially for the grid with more members such as three-way grid). According to the different equipment used, the overall installation method is divided into multi machine lifting method, rod pulling lifting method, jack lifting method and Jack jacking method. 3、 In recent years, the application of high-altitude parallel sliding method in the construction of space truss roof is increasing gradually, which is especially suitable for the shadow theater, auditorium and other projects. In this construction method, the grid structure is usually assembled by setting up an assembly platform on the roof of the front hall of the building (or by setting up an assembly platform on the stand of the audience hall). After the assembly of several assembly units (or sections), the grid structure will fall onto the sliding track and slide forward for a certain distance with the traction equipment. Next, assemble the second unit (or the second section) on the assembly platform, and slide forward together with the assembly unit (or section) after assembly. In this way, continue to ask for front sliding step by step until the whole grid structure is assembled and slid to the position. Xuzhou branch of Jiangsu Xinpeng Steel Structure Engineering Co., Ltd. is a large-scale enterprise integrating the design, manufacturing and installation of steel structure, grid, color plate, C-shaped steel, curtain wall and daylighting aluminum-plastic doors and windows. It has a grid installation team in the industry, provides technical services, and welcomes customers to visit and guide the company. There are 381 meters high buildings on the ground. Since 1931. It has occupied the throne of the world's high buildings for 40 years. It was not until 1971 that it was overtaken by the world trade center. In the 1930s, architects managed to build a 200 foot round tower. Make the building 1250 feet high. It took only 410 days to build this skyscraper, which is also a miracle of architecture. For a long time, the skyscraper has been the world's tallest building. London Millennium Dome, Millennium Dome. Located on the Greenwich peninsula on the Thames River in the east of London, it is a landmark building built in England to meet the 21st century. The diameter of the bend is 320m, and the circumference is more than 1000m. There are 12 masts with a height of 100m passing through the roof, and the roof adopts the spherical tension membrane structure. The type of pile foundation can be determined comprehensively according to the soil condition of foundation and local construction conditions. Use difference between Laigang steel and Laigang channel steel. click Application scope of Laigang steel, ordinary Laigang steel, light Laigang steel. Due to the relatively high and narrow section size, the moment of inertia of the two main sleeves in the section is quite different. This makes it has a great limitation in the scope of application. The use of Laigang steel shall be selected according to the requirements of design drawings. Laigang steel channel is mainly used for building structure, curtain wall engineering, mechanical equipment and vehicle manufacturing, etc. it is required to have welding, riveting and comprehensive mechanical properties in use, The raw steel billet of Laigang channel steel is carbon steel or low alloy steel billet with carbon content not more than 025%. The finished Laigang channel steel is formed by hot processing, normalized or hot rolledGoods. The link joints, members and various accessories shall be inspected in accordance with jgj751-91, jgj752-91 and jgj753-91. The inspection results do not participate in the quality assessment of the main part. If the grid structure works are completed in the above form, the sub divisional works (node fabrication, member fabrication, installation, paint, corrosion prevention and fire prevention) shall be inspected in accordance with the quality inspection and assessment standard for grid structure works jgj78-91 during the fabrication and installation. The inspection results are all involved in the quality inspection and evaluation of the main part of the project. If the quality of the subdivisional works included in the grid structure is all qualified, the overall quality of the component grid structure is qualified, and 50% or more of them are excellent. So we can find out what kind of business violation, and we all know who his reply is. It's OK for the information bureau to catch them. His question is such infrastructure. Can we cope with the unexpected impact? What Lijiang worries about is that our system, due to backward infrastructure, suddenly finds itself at a loss in the face of crisis. Just like Thailand at that time, he thought that when the currency cost project was put on the agenda, we should take precautions in infrastructure construction. Now many buildings use steel structure. In fact, there are light steel and light steel heads. What's the difference between them. 1. Crane lifting weight structure ≥ 25t < light steel structure, 2. Steel consumption structure per square meter ≥ 50kg / m2 < light steel structure。 3. Steel plate thickness structure of members ≥ 10 mm < light steel structure. (1) set out the starting datum line of the block, and determine the control lines of both sides of the board along the installation direction. (2) the installation block shall be adjusted according to the datum line and control line. It is fixed on the fixed plate to seal the fixed parts with waterproof glue to prevent leakage. (3) measure and draw the lap line between the second board and the block on the block board, apply waterproof glue to the lap part of the board, and install the second board for adjustment. The fixings shall be fixed and sealed with waterproof glue, and the second plate and the subsequent plate shall be installed in turn. 5. Wall panel installation, wall panel installation process flow: installation of profiled steel plate for inner wall panel → installation of thermal insulation layer → installation of color profiled steel plate for outer wall panel → installation of color plate accessories for wall panel → closure of wall project, key process, A. before construction and installation of inner wall panel, first set up sliding frame. The sliding frame is of suspension type.