(完整)混凝土结构设计原理(同济大学)课后思考题答案(完整)混凝土结构设计原理(同济大学)课后思考题答案 编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（(完整)混凝土结构设计原理(同济大学)课后思考题答案）的内容能够给您的工作和学习带来便利。同时也真诚的希望收到您的建议和反馈，这将是我们进步的源泉，前进的动力。本文可编辑可修改，如果觉得对您有帮助请收藏以便随时查阅，最后祝您生活愉快 业绩进步，以下为(完整)混凝土结构设计原理(同济大学)课后思考题答案的全部内容。为了促进本公司各项经营活动由事后管理向事前管理方式的转变，强化生产经营全过程控制，提高资金使用的计划性，特制定本管理办法，以增加公司资金运行的透明度，降低各项成本，使有限的资金发挥最大的效能。treatment of heavily polluting industries. According to municipal, and municipal government deployment of seven big heavy pollution industry regulation three years action plans, requirements to December 2016 end of Qian, all included shut stopped eliminated of enterprise all shut stopped eliminated in place; June 30, 2017 Qian, all included place regulation upgrade and agglomeration restructuring of enterprise by unified standard regulation in place, late not standard of enterprise are implementation discontinued; June 30, 2018 Qian, all intends Park production of enterprise relocation Park in place, late not Park of are discontinued. In the process of renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise governance and production lines, eliminated a number of yearly emission intensity, low value-added products of backward production capacity. Second, we must strictly enforce the space, total project Trinity environment access system, promoting industry access and environmental conditions of access of enterprises to the Park, industrial park, in principle, no longer the class on the new project. Thirdly, promoting replacement and reconstruction of heavily polluting industries, mergers and reorganizations, guide enterprises to energy conservation, recycling and low-carbon and clean production, and improve the level of green development. Four to establish a long-term supervision mechanism, increase the intensity of special inspections, investigate and punish the rectification is not in place, normal business of running anti-pollution installations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up cross Yang support river dike reinforcement, and along Pu seawall except insurance reinforcement, and Lake Qian sluice, and BA Cao sluice, and cloud cover reservoir, focus flood control drainage engineering construction, vigorously implementation strong library solid di spread row engineering, increased geological disaster hidden points governance efforts, solid advance small basin torrent disaster governance, efforts from essentially solution basin sex, and regional flood control drainage capacity insufficient of problem. Vigorously implement the piers, algae and other water sources protection and, promoting rural drinking water safety projects, setting up water pricing reform and environmental protection mechanism, guiding water depth. Further soil pollution and repair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements mutual long. Four, manage to tighten control, to play three to split battle. Xia Baolong, Secretary of provincial party Committee stressed that while the three to split operation time is over three years, but three to split must continue to catch on, and resolve a split cannot be changed. All localities and departments to the village and no unauthorised created第1章绪论思考题1.1什么是钢筋混凝土结构？配筋的主要作用和要求是什么？以混凝土为主要材料的结构。在混凝土中配置适量的受力钢筋，并使得混凝土主要承受压力，钢筋主要承受拉力，就能起到充分利用材料，提高结构承载力和变形能力的作用。要求:受力钢筋与混凝土之间必须可靠地粘结在一起，以保证两者共同变形、共同受力.同时受力钢筋的布置和数量都应由计算和构造要求确定,施工也要正确.保证钢筋和混凝土之间有足够的粘结力的构造措施有：1）对不同等级的混凝土和钢筋,要保证最小搭接长度和锚固长度；2）为了保证混凝土与钢筋之间有足够的粘结，必须满足钢筋最小间距和混凝土保护层最小厚度的要求;3）在钢筋的搭接接头范围内应加密箍筋;4)为了保证足够的粘结在钢筋端部应设臵弯钩。1。2钢筋混凝土结构的优点有：1)经济性好，材料性能得到合理利用;2）可模性好；3）耐久性和耐火性好，维护费用低；4）整体性好，且通过合适的配筋，可获得较好的延性;5)刚度大，阻尼大;6)就地取材.缺点有：1）自重大；2)抗裂性差；3）承载力有限；4）施工复杂；5）加固困难。1.3结构有哪些功能要求？简述承载能力极限状态和正常使用能力极限状态的概念。（1）结构的安全性（Safety）：在正常施工和正常使用时,能承受可能出现的各种作用；在设计规定的偶然事件发生时及发生后，仍然能保持必要的整体稳定性。（2)结构的适用性 （Serviceability)：结构在正常使用时具有良好的工作性能，不致产生过大的变形以及过宽的裂缝等。（3)结构的耐久性(Durability）:结构在正常的维护下具有足够的耐久性。（即结构能正常使用到规定的设计使用年限）。它根据环境类别和设计使用年限进行设计。承载力极限状态（ultimate limit state）：结构或构件达到最大承载能力或变形达到不适于继续承载的状态;其主要表现为材料破坏、丧失稳定或结构机动。正常使用极限状态（serviceability limit state）:结构或构件达到正常使用或耐久性能中某项规定限值的状态；其主要表现为过大变形、裂缝过宽或较大振动.第2章混凝土结构材料的物理力学性能2。1混凝土立方体抗压强度轴心抗压强度标准值和抗拉没强度标准值是如何确定的？为什么低于？有何关系？与有何关系？混凝土的立方体抗压强度标准值是根据以边长为150mm的立方体为标准试件，在(203)的温度和相对湿度为90以上的潮湿空气中养护28d，按照标准试验方法测得的具有95保证率的立方体抗压强度确定的.混凝土的轴心抗压强度标准值是根据以150mm150mm300mm的棱柱体为标准试件，在与立方体标准试件相同的养护条件下，按照棱柱体试件试验测得的具有95保证率的抗压强度确定的.混凝土的轴心抗拉强度标准值是采用直接轴心抗拉试验直接测试或通过圆柱体或立方体的劈裂试验间接测试，测得的具有95保证率的轴心抗拉强度。由于棱柱体标准试件比立方体标准试件的高度大，试验机压板与试件之间的摩擦力对棱柱体试件高度中部的横向变形的约束影响比对立方体试件的小,所以棱柱体试件的抗压强度比立方体的强度值小，故低于。轴心抗拉强度标准值与立方体抗压强度标准值之间的关系为:轴心抗压强度标准值与立方体抗压强度标准值之间的关系为：2.2混凝土的强度等级是根据立方体抗压强度标准值确定的.我国新规范规定的混凝土强度等级有C15、C20、C25、C30、C35、C40、C4