土建專業(yè)外文翻譯---預(yù)應(yīng)力混凝土結(jié)構(gòu)的抗震加固方案與局部影響-全文預(yù)覽
【正文】 he level of quality control define the feasibility of the proposed intervention approach. The duration of work/disruption of use and the disruption to occupants should also be considered. The functionality and aesthetical patibility of the intervention scheme with the existing building is an additional engagement. Even the reversibility of the scheme in case it is not accepted on a longterm basis should be taken into account. From a technical point of view the selection of the type and level of intervention have to be based on patibility with the existing structural system and the repair materials and technology available. Controlled damage to nonstructural ponents and sufficient capacity of the foundation system are essential factors that are often overlooked. Issues such as irregularities of stiffness, strength and ductility have to be considered in detail. A convenient way to discuss the engineering issues of evaluation and retrofit is to break down the process into steps. The first step involves the collection of information for the asbuilt structure. The configuration of the structural system, reinforcement detailing, material strengths, foundation system and the level of damage are recorded. In addition, data relevant to the nonstructural elements (. infill walls) which play a significant role and influence the seismic response of structures are also piled. Sources for the above information can bee visits to the site, construction drawings, engineering analyses and interviews with the original contractor. The rehabilitation objective is selected from various pairs of performance targets and earthquake hazard levels (. supply and demand, or response and input pairs). The performance target is set according to an acceptable damage
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