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Installation Technology of Super Long Steel Hanger for Curtain Wall of Xi’an Silk Road International Convention and Exhibition Center
Yi Jiang,
Zhiyan Che,
Xinyou Chen,
Zhenghua Gong
Issue:
Volume 4, Issue 5, October 2019
Pages:
93-97
Received:
2 August 2019
Accepted:
11 September 2019
Published:
25 September 2019
Abstract: There are 268 pieces of super long steel hangers on the façade of the curtain wall project of Xi’an Silk Road International Convention and Exhibition Center. A single piece of steel hanger is 26m~44m long and 7t~34t heavy. The difference between this project and the conventional construction method of curtain wall lies in that during the installation of steel hangers, the complex deformation of the main steel structure can make it difficult to accurately install steel hangers. The construction steps are simulated with SAP2000. The simulation defines 84 construction steps. After an accurate calculation of the deformation of the main steel structure that each piece of steel hanger must adapt to, the super long steel hangers are assembled on site. The overhanging end of the metal roof is about 5m~20m from the mounting axis of steel hangers, so the conventional process of installation from up to down cannot be applied. A 180T crawler crane is utilized for overall lifting and installation on the side. This is a new construction method of curtain wall that can control the installation accuracy within 5mm, ensure the flatness of the structural façade, improve the construction and installation efficiency, and guarantee the construction safety. It can provide a technical reference for similar large-scale curtain wall projects in the future.
Abstract: There are 268 pieces of super long steel hangers on the façade of the curtain wall project of Xi’an Silk Road International Convention and Exhibition Center. A single piece of steel hanger is 26m~44m long and 7t~34t heavy. The difference between this project and the conventional construction method of curtain wall lies in that during the installati...
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Total Assembly Construction Technology of Ultra-long Variable Cross-section Spiral Aluminum Plate Unit of Qingdao Citizen Fitness Center Sports Stadium
Yong Liang,
Zhiyan Che,
Xinyou Chen,
Cipei Liu
Issue:
Volume 4, Issue 5, October 2019
Pages:
98-104
Received:
2 August 2019
Accepted:
11 September 2019
Published:
25 September 2019
Abstract: Qingdao Citizen Fitness Center Sports Stadium is saddle-shaped with a construction area of about 140,000m2. The rippled roof and façade are assembled with ultra-long variable cross-section spiral aluminum plate units. The largest aluminum plate unit is 1.5 tons heavy and 13 meters long. The main structure of this project is the steel structure that can deform due to the factors such as temperature and subsidence, thus making it difficult to accurately install the aluminum plate curtain wall. During construction, the total station is used several times for data acquisition to generate the BIM model, which is aligned, compared and analyzed with the theoretical 3D model for providing the accurate support for the construction process. A 1:1 main truss of the steel structure is erected on the façade to simulate the tire frame erection and assembly the ultra-long variable cross-section spiral aluminum plate units on site. The main steel structure, with the lowest point at 26 meters and the highest point at 49 meters, is lifted by the truck cranes and inserted for installation from up to down. This process is a new curtain wall construction method that increases the installation efficiency by 30%, improves the construction quality and guarantees the construction safety. It can provide the technical reference for the curtain wall work of other similar large sports stadium projects in the future.
Abstract: Qingdao Citizen Fitness Center Sports Stadium is saddle-shaped with a construction area of about 140,000m2. The rippled roof and façade are assembled with ultra-long variable cross-section spiral aluminum plate units. The largest aluminum plate unit is 1.5 tons heavy and 13 meters long. The main structure of this project is the steel structure that...
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Overall Lifting Technology of Aluminum Plate Unit in the Air Corridor of Raffles City in Chongqing
Yajun Cao,
Zhiyan Che,
Weixin Ma
Issue:
Volume 4, Issue 5, October 2019
Pages:
105-110
Received:
2 August 2019
Accepted:
11 September 2019
Published:
25 September 2019
Abstract: In this paper, we explore the installation method and process of large-span air corridor curtain wall of Chongqing Raffles Square Project. The curtain wall is positioned at the lower part of the sightseeing overpass, with the spans of 48.5m, 52.6m and 54.1m respectively, and the lengths of the cantilever sections are 25.1m and 26.8m. At the junction of two rivers in Chongqing, several super high-rise buildings nearby exert strong aerodynamic interference effects. It is difficult to construct this project in a conventional way because intense airflow exists. Through an analysis of two construction options, with consideration to difficulties, quality, safety and economic costs of construction by the two options, the overall lifting of aluminum plate unit is chosen as the final plan. An introduction is made to practical operations of this option, including assembly of aluminum plate unit V-frame, tire frame installation, aluminum plate surface layer assembly, hydraulic synchronous lifting and unit body fixing. The hydraulic synchronous lifting process details the technical key points such as lifting point setting, lifting angle control, lifting and windproof measures, hydraulic lifting force control, hydraulic synchronous lifting control, etc. Finally, by utilizing this option, the quality, construction schedule, safety and cost for the overall lifting of units aloft can be guaranteed and good results are achieved in practice.
Abstract: In this paper, we explore the installation method and process of large-span air corridor curtain wall of Chongqing Raffles Square Project. The curtain wall is positioned at the lower part of the sightseeing overpass, with the spans of 48.5m, 52.6m and 54.1m respectively, and the lengths of the cantilever sections are 25.1m and 26.8m. At the junctio...
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Bowl-shaped Hyperbolic Glass Curtain Wall Construction Technology
Luo Zhenglin,
Che Zhiyan,
Zhang Haibin,
Huang Dong
Issue:
Volume 4, Issue 5, October 2019
Pages:
111-117
Received:
2 August 2019
Accepted:
18 September 2019
Published:
30 September 2019
Abstract: In the curtain wall work of China Construction Optics Valley Star Project H Block Headquarters Office Building, the treasure bowl in the atrium is the bowl-shaped hyperboloidal glass curtain wall, which is composed of hyperboloidal diamond-shaped glasses. It is difficult to install the glasses of various dimensions because the installation process is very complicated, thus being a thorny problem for this project. Based on the project case, this paper makes a summary and analysis of the construction process and technical key points and discusses how BIM technology is applied for modeling and material processing of this project. Moreover, it also explains the technical control points for the major procedures such as measurement and setting-out of control points, measurement verification, fabrication of tire frame, hyperbolic base keel welding, base element lifting of steel truss, installation and locating of hyperbolic steel truss base, installation of support point clamps, installation of hyperboloidal diamond-shaped glass. Finally, by utilizing the advanced technical means and scientific construction measures, this project solves the thorny problem and guarantees the installation accuracy and quality. The BIM technology and the method for controlling the base keel deformation and absorbing the deviation of structural deform adopted in this project are of great significance as reference for similar projects.
Abstract: In the curtain wall work of China Construction Optics Valley Star Project H Block Headquarters Office Building, the treasure bowl in the atrium is the bowl-shaped hyperboloidal glass curtain wall, which is composed of hyperboloidal diamond-shaped glasses. It is difficult to install the glasses of various dimensions because the installation process ...
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Application of Mobile Mechanical Arm in Curtain Wall Installation of Xinhua Star
Li Fenghui,
Che Zhiyan,
He Wei
Issue:
Volume 4, Issue 5, October 2019
Pages:
118-122
Received:
2 August 2019
Accepted:
18 September 2019
Published:
30 September 2019
Abstract: Chengdu Xinhua Star Project is designed by integrating insert unit elements with aluminum panel boxed eave. Because the unit elements are installed between the upper and lower floors, the traditional vertical lifting process cannot meet the installation requirements. Therefore, this project uses the mobile mechanical arm developed by our company for installing unit element indoors. The mobile mechanical arm is 3045×1699×1320mm with the rated load of 600kg, the self-weight of 1750kg and the counterweight of 600kg. It can be disassembled or separate transportation and has the functions of free displacement, three-dimensional adjustment and absorption and grabbing. During construction on site, first of all, the grid lines, finished surface line, and bottom and top locating lines of the adapting piece of the unit element are clearly marked and set out on the main structure. According to the geometric dimension of the mechanical arm and the locating line of the curtain wall, the movement locating line of the mechanical arm is drawn. Then, the mechanical arm is operated indoors for installation. The indoor installation process of curtain wall explored by this project provides a new idea for the construction of the unitized curtain wall of ultra-high rise buildings. It can alleviate the construction difficulty of the unitized curtain wall, reduce the safety risks and measure costs of outdoor installation of the unitized curtain wall of ultra-high rise buildings, thus being a new type of curtain wall construction process that is worthy of promotion and application.
Abstract: Chengdu Xinhua Star Project is designed by integrating insert unit elements with aluminum panel boxed eave. Because the unit elements are installed between the upper and lower floors, the traditional vertical lifting process cannot meet the installation requirements. Therefore, this project uses the mobile mechanical arm developed by our company fo...
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Design of Control, Filling and Recording of Gallons in Auto Refill Water Depot
Lory Marcus Parera,
Thony Johny Tahalele,
Conny Emilda Pelamonia
Issue:
Volume 4, Issue 5, October 2019
Pages:
123-128
Received:
25 September 2019
Accepted:
4 October 2019
Published:
15 October 2019
Abstract: Water is one of the natural resources that is almost 95% needed by humans for life. In addition to humans, other living beings also desperately need water as a living source. To get clean and healthy water, people usually take water in the well and then cook until enough boiling height and can kill germs or bacteria so that the water is worth to drink. Reverse Osmosis technology used in the depot filling the gallon drinking water is much in demand by the community because it is very practical and ready to drink or used for other needs. From the results of the reflection, the water fill in the gallon was still manual, where at the time of filling the gallon, the depot still uses switches to turn on and off the water filling on the gallon. This process can be repetitive, causing the switch to become worn and damaged. The calculation of a gallon fill is still a record of how many gallons are filled and sold for a day by the owner or officer working. Design of this prototype aims to realize a device that works automatically consisting of hardware devices such as mechanical and electrical devices and software in the form of microcontrollers and other electronic components that can be charging, and recording at the time of water filling in the depot. Method used is the method of designing the mechanical, electrical and software so as to produce a tool that can facilitate the user depot refill water filling, control and recording automatically. The results of this research is based on the ultrasonic sensors by modifying the transmitter and receive distance of 1.5 cm from a standard distance of 2.5 cm, hence the result is very maximal in filling and the water pairing for all types or of peacock gallons. The measured water level is the lowest level of 2.4 cm with a time of 06.39 seconds and a high level of 8 cm with a time of 06.31 seconds.
Abstract: Water is one of the natural resources that is almost 95% needed by humans for life. In addition to humans, other living beings also desperately need water as a living source. To get clean and healthy water, people usually take water in the well and then cook until enough boiling height and can kill germs or bacteria so that the water is worth to dr...
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Study on Drainage-anchorage Composite Slope Protection System with Pervious Concrete
Wang Bin,
Zang Deji,
Yang Li
Issue:
Volume 4, Issue 5, October 2019
Pages:
129-134
Received:
3 September 2019
Accepted:
30 September 2019
Published:
17 October 2019
Abstract: In view of the landslide caused by rainfall, a composite structure of seepage guidance and anchorage is proposed. Pervious concrete is used as anchorage cementing material to realize the function of permeability and anchorage. The permeability coefficient, bonding force and cohesion of soil interface were tested. Summarizing the rules of these parameters, we can see that it is feasible to use pervious concrete to realize the composite functional structure. When the porosity is 18%, the comprehensive effect is better. The numerical analysis shows that the composite structure can make the rainfall infiltration line rise slowly and the rock and soil deteriorate slowly, which is beneficial to the stability of the slope. After the rain stops, the characteristics of water and soil in the slope can be restored quickly.
Abstract: In view of the landslide caused by rainfall, a composite structure of seepage guidance and anchorage is proposed. Pervious concrete is used as anchorage cementing material to realize the function of permeability and anchorage. The permeability coefficient, bonding force and cohesion of soil interface were tested. Summarizing the rules of these para...
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