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 Wysłany: Śro 19:24, 10 Lis 2010 Temat postu: ugg boots sale Silo, traverse, and Introduction to |
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Silo, traverse,[link widoczny dla zalogowanych], and Introduction to seismic design of concentrated pool
And the ring to the total steel reinforcement ratio to the minimum limit, and the tube wall hole location, hole size and hole central angle matters were made to strengthen the relevant provisions. 7) In view of the damage actinide Silo experience, avoidance and mitigation of earthquake damage, therefore, between the bolt and the vertical columns of steel column base support top bay, have raised the requirements.  positions on the brick construction volume is too wide,[link widoczny dla zalogowanych], heavy damage, which must pay attention to. Requirements of the brick wall thickness not less than 240ram, according to some news from the ring beam and the structural columns set to increase its ductility and seismic capacity. MINE DESIGN AND CONSTRUCTION 36 1993 5 Second, the transport Corridor I, the scope for expansion of the chapter of foundation, pole supporting structure, the Gallery as a truss or a beam of ordinary plate form of the general structure of the seismic traverse design, no earthquake experience, not including special form of the corridor, for example, and basic cable traverse as a shell structure with the gallery's vestibule. 2, the structure selection Corridor Gallery at the body parts can be divided into cross-bearing structure and supporting structure between the three parts. I) body structure from gallery to reduce quality, reduce the sake of the earthquake, the ground should be adopted traverse open or semi-open structure, envelope filled with suitably light sheet or light walls, traverse the roof with light elements. Gallery has a good body for lateral stiffness and integrity, should adopt the place reinforced concrete floor plate or horizontal layout of the precast reinforced concrete bending tensile strength of brick masonry structures is very low, and the free length of the wall large seismic capacity small, generally heavier damage. But given the current conditions of supply of materials,[link widoczny dla zalogowanych], when the intensity is low, still a large number of used brick retaining wall, but the appropriate use of its roof in place reinforced concrete structure to be in order to improve overall body corridors to improve the brick wall stress conditions. Underground Passageway place reinforced concrete structure should be used in high intensity areas and poor soil conditions, especially during the time. 2) cross between the load-bearing structure. Earthquake resistance of reinforced concrete structures better with higher load capacity and good ductility, according to past experience in the design and seismic analysis to determine when the span of less than 15m, the appropriate use of reinforced concrete beam, the span is slightly larger for the i5 ~ I8m, we can use prestressed concrete girder or prestressed concrete truss, when the time span of more than 18m, you can use steel truss. 3) The supporting structure of reinforced concrete structures since the earthquake has a good advantage and save steel,[link widoczny dla zalogowanych], generally given priority. Steel can be applied when needed. According to the Ministry of Coal on the 21 Corridor walls supporting the results of the survey, whether light or heavy cover cover, 9 degrees and 10 degrees in the area,[link widoczny dla zalogowanych], collapsed as high as 62, therefore provides better conditions at the venue only to low-intensity area, and supporting structure is very low, and take to strengthen measures to be solid brick wall with box. Reinforced concrete frame should adopt a framework for better rigidity and stability of the form, so do not use T-shaped support structure with poor lateral stability. Corridor, with a supporting structure within the material should be the same. Bearing structural stiffness change along the corridor to be even longer. Longitudinal stiffness of the supporting structure when small, can use four-post frame. Corridor, the most since the quality and stiffness and other construction (structures) are often significant differences between the end and therefore traverse the adjacent building (structure) of the earthquake should be established with the joint. When the field intensity higher or lower when the subject of particularly strict. 3, seismic i) calculated based on the experience and analysis of earthquake damage, earthquake determined from time for checking the range. Corridor of reinforced concrete underground, only to meet the seismic design requirements, can not carry out seismic checking. For the floor vestibule, corridor walls are used, although the body heavy and widespread damage, but set the place reinforced concrete structural columns and eaves ring beam and other structural measures, most of the seismic commitment by the structural columns, walls shared little corresponding damage significantly reduced, or even good. Therefore, to meet the reasonable requirements of seismic design, the gallery itself can not seismic checking. Structural characteristics of their supporting structure, intensity and site conditions, the criteria are provided from time to checking the range. 2) clear from the main traverse checking of earthquake resistance of its supporting structure, and to the horizontal and vertical respectively horizontal seismic calculations. 3) is generally believed that the corridor is characterized by high gallery soft body slender frame, single specimens of the previous frame in the horizontal is the seismic calculation. However, according to measurement that traverse along the length and height of all parts along the horizontal or vertical measured natural frequency of the same; Gallery at the corresponding point of the body and support a coordinated deformation, fully shows the overall performance of the corridor, so Corridor in the calculation and analysis support to be given to joint working between the corresponding unit of the calculation of section shall be heard by Seismic Joint. This is a seismic traverse a significant improvement and development of computing. Traverse both ends of computing unit can be summarized into five cases: (1) ends with the building (structure) disengaged; (2) ends with the construction of rule No. 5 1993
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