土木毕业论文中英文翻译

试验程序试验描述这里提出的试验设置/计划是概念性地选自Slowik等人 1998 最初的成果，该成果是在美国玻尔得科罗拉多州立大学运作的。在那些试验中，为了获得典型的受到水坝主体基础接触面的物质属性和外界作用，大块的用于模拟岩石/混泥土生物材料样本受到双轴向载荷支配。同样，如图一所示，目光集中在水坝中的岩石–混凝土接触面的同时，我们辨别要利用的实验室试验样本的边界条件。此外，通过审慎的牵引和限制修正，这个典型的接合处能够十分容易地模塑浇灌横接缝、断裂的混凝土体积或者岩石接缝。通过两个单独的和“反对称的”坚硬的钢骨架结构实施牵引和限制。不变的与接缝的限制正交（或垂直）会模塑重力荷载，而精确力会通过硬化了的钢架结构沿着这个接缝作为一个不变的剪应力分配被转移。 这些力会模塑地震导致的水平力（试验中不考虑惯性力）。”这种相关的与众不同的试验配置的优点（尽管在Slowik等人 1998 试验中已经被成功使用）是在接受试验的表面的挠矩合力等于零，这一点可以从一个简单的受力图中确定。剪切图1中。 试验原理：实验室中复制的负载条件是典型的水坝接合处，像这种水坝主体基础接触面测试，一般很难有一个统一的剪应力分配，或者说至少很难区分剪切和弯曲效果。 来自早先在科罗拉多—包勒德大学进行的试验的主要差别是施加在接触面的负载不是没有变化而是反向循环。同样根据这种修正在下文中介绍的所有设备已经明确计划或者准备计划应用于这个新的试验。重点集中在现有裂缝的循环工作状况而不是传导机械装置• 试验以前描述这种裂缝表面的光洁度的特性的可能性，然后再试验后通过十分相同的的表面复试，可以量化这种表面降解。当然，对样本5沿着平行线到滑动反向采取了激光扫描，见图3；很遗憾，预计的约束阻碍了事后的测量。

The urban river embankment discuss the ecological constructionAnonymous XXXXXXXXAbstract: the urban river embankment construction as the object, discuss the current social background, analyses and compares the river embankment design of traditional methods and characteristics of ecological methods, and puts forward three modes of ecological design and their advantages and disadvantages, and expounds the present situation of the ecological construction in domestic bank and future : the bank; Ecology; Design way; Domestic situationText:A, backgroundRiver Banks part is the amphibious interlaced transition belt, has the remarkable edge effect. Here are active substances, nutrient and energy flow, offer a habitat for a variety of creatures. Natural state Banks often species richness, productivity traditional embankment design often single ?一、背景河流的堤岸部分是水陆交错的过渡地带，具有显著的边缘效应。这里有活跃的物质、养分和能量的流动，为多种生物提供了栖息地。自然状态下的堤岸往往物种丰富、生产力高。传统的堤岸设计往往会单纯从防洪角度出发，采用土堤或者土石混合堆砌起来高高的堤岸。它的优点在于高度的可靠性，结构设计后加起防护堤岸抗流水冲刷能力显著增强。对于洪水暴发频繁、侵蚀严重的区段，这样的设计无可厚非，而对于一般河流堤岸的修建，这样的设计则显得缺乏环境的美化和绿化，同时也破坏许多对生态起重要作用的自然因素，如破坏植被与河床间的联系，造成冲刷侵蚀转移等。另外，河流作为城市风貌不可多得的珍惜资源，也是城市风貌的特色要素，它的景观塑造显得十分必要。同时，堤岸景观建设必然使滨河地区土地价值提升，滨水开发的高投资回报的特点更增强了对城市堤岸景观建设的需求。二、需求——堤岸的生态化建设河流堤岸作为城市中最邻近河流的区域，是城市与河流的衔接线，它的景观规划是提高城市生活品质的需要，也是丰富城市景观的需要。生态化建设，它的根本思路是运用自然本身抗干扰和自我修复的能力来处理人与自然的关系。生态设计方法不同于传统用人工的结构和形式来取代自然的方法，而是用自然的结构和形式来顺应自然的进程。将河岸与河道在生态上联系起来，也就实现了物质、养分、能量的交流：对于生物，它提供了合适的栖息地；植物根系可固着土壤，枝叶可截留雨水，过滤地表迳流，抵抗流水冲刷，从而起到保护堤岸、增加堤岸结构的稳定性、净化水质、涵养水源的作用，而且随着时间的推移，这些作用被不断加强。同时，生态化建设以自然的外貌出现，容易与环境取得协调，造价也较低，不需要长期的维护管理。三、河流堤岸生态化设计方式河流堤岸生态化设计，要遵守生态设计的原则，注重地方性、保护与节约自然资本、让自然做功、显露自然，主要体现在对地域气候环境、河流地质地貌、水文变化的适应，对河流生态环境的考虑，对堤岸地形的处理和对筑堤材料的选择和构造方式方面。1） 人工类：传统方法是采用块石或混凝土块砖等堆砌。可在此基础上加以改进以适应河流景观设计的需求。a) 块石或混凝土块砖干砌，不用砂浆。这样在砌块之间就留有空隙，为后期滨河植物的生长提供了空间。随着时间的推移，堤岸会逐渐呈现出自然的风貌。b) 堤岸采用台阶式分级，台阶面上的空间加以利用，种植植物。当然这两种改进方法对于河岸处现有植被仍存在一定的不良影响，人工痕迹也过于明显。2） 自然类：充分利用堤岸植被原型，可直接将适用于滨河地带生长的植被种植于堤岸上，利用植物的根、茎、叶来稳固堤岸，防止侵蚀、控制沉积的同时也为生物提供了栖息地。3） 人工自然相结合综合了以上两种方法的优点，具有人工结构的稳定性和自然的外貌，见效快、生态效益好，以下为常见的两种类型：a) 种植植物的堆石将由大小不同的石块组成的堆石置于与水接触的土壤表面，再把活体切枝插入石堆中使斜坡更加稳定。根系可提高强度，植被可遮盖石块，使堤岸外貌更加自然。b) 与植物结合使用的插孔式混凝土块将预制的混凝土块以连锁的形式置于岸底的浅渠中，再将植物切枝或植株扦插于混凝土块之间和堤岸上部，其上覆土压实，再播种草本植物。堤岸生态化建设也存在一定的局限性。如：选用的材料及建造方法不同，堤岸的防护能力相差很大，需要运用多学科知识认真分析，这就为设计人员提出了更大的挑战；建造初期若受到强烈干扰，则会影响到以后防护作用的发挥等。这也就对河流堤岸的生态化设计提出了更高的要求。四、国内现状1）省会城市在我国省会城市及计划单列市中有近80％进行了堤岸景观规划。（参考文献[3]）城 市 项目名称 城 市 项目名称北 京 长河城市水系统综合治理 南 宁 堤岸园工程长 沙 湘江风光带 宁 波 滨江大道沿江景观工程成 都 府南河绿化工程 上 海 外滩、陆家嘴滨江大道福 州 闵江江滨公园 沈 阳 浑河观光旅游带广 州 珠江二沙段堤岸景观、芳村长堤建设 太 原 汾河公园贵 阳 南明河景观绿化工程 天 津 海河堤岸改造工程哈尔滨 松花江南岸沿江风景长廊 武 汉 汉口江滩一二期工程昆 明 盘龙江中段滨水生态景观建设 西 安 灞河大水大绿工程兰 州 黄河风情线 重 庆 南滨路滨江旅游观光大道从规划后建成情况看，这些城市河流堤岸景观项目都得到了当地政府与市民的肯定。在这些项目中，堤岸既可成为当地最具吸引力的城市公园，如太原的汾河公园和福州的江滨公园；堤岸也可成为市民日常休闲活动的热点地段，如南宁的堤路园和武汉的汉口江滩工程；堤岸还可成为城市最具特色的地段，如重庆的南滨路滨江旅游观光大道；堤岸更可成为城市旅游的热点，如上海的外滩和陆家嘴滨江大道。总之，经过景观规划的堤岸已成为当地最具特色的地区。从建设效果看，相对堤岸的原来面貌而言，统计资料中的这些景观工程都是较成功的，都成为当地城市关注的热点，成为当地政府的政绩工程，成为当地的民心工程。城市河流堤岸通过景观规划，有效地改善了滨河地段的环境，并带动滨河地段的开发。但必须清醒地认识到，这些城市堤岸景观项目规划并非尽善尽美，也存在这样或那样的问题，仍有待完善。2）中小城市城市经济实力的强大决定了其城市建设水平的高标准和高水平。中小城市河流堤岸景观与统计资料中的城市存在较大的差距，存在更多的问题。特别是由于资金问题，堤岸景观是，纯人工，状态的钢筋混凝土防洪堤，或保持自然防洪状态的土石堤，没有经过景观规划，易造成城市资源的极大浪费。五、前景目前，河流景观建设，特别是城市河流景观建设，在中国正方兴未艾；在发达国家中也是一个久盛不衰的话题。 回顾发达国家河流景观建设的历史，自20世纪70年代以来，随着人们环境意识的普遍增强，重视河流景观的生态功能已成为一个时代的呼唤，河流景观建设的生态设计方法也已得到了空前的重视和发展。他山之石可以攻玉，借鉴发达国家已经形成的成熟的理念和做法，可以使我们少走弯路，搭上隆隆前进的生态建设之车。

Improved nonlinear plastic hinge analysis of space frame . Richard Liew a,*, H. Chen a, . Shanmugam a, . Chen ba Department of Civil Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singaporeb School of Civil Engineering, Purdue University, West Lafayette, IN 47907, USAReceived 5 January 1999; received in revised form 17 August 1999; accepted 25 August 1999AbstractThis paper is concerned with second-order plastic hinge analysis of three-dimensional frame structures. The beam–column formulationis based on the use of stability interpolation functions for the transverse displacements, and considers the elastic couplingeffects between axial, flexural and torsional displacements. The developed computer program can be used to predict accurately theelastic flexural buckling load of columns and frames by modelling each physical member as one element. It can also be used topredict the elastic buckling loads associated with axial-torsional and lateral-torsional instabilities, which are essential for predictingthe nonlinear behaviour of space frame structures. The member bowing effect and initial out-of-straightness are also considered sothat the nonlinear spatial behaviour of structures can be captured with fewer elements per member. Material nonlinearity is modelledby using the concentrated plastic hinge approach. Plastic hinge between the member ends is allowed to occur. Numerical examplesincluding both geometric and material nonlinearities are used to demonstrate the robustness, accuracy and efficiency of the proposedanalytical method and computer program. Ó 2000 Elsevier Science Ltd. All rights : Advanced analysis; Buckling; Nonlinear analysis; Plastic hinges; Space frames; Instability1. IntroductionTwo-dimensional (2-D) plastic hinge analysis of planeframes composed of members with compact section,fully braced out-of-plane, has been the subject for investigationin recent years. The theory for advanced inelasticanalysis of rigid and semi-rigid 2-D frames has beenwell developed and verified by tests [1,2]. These analysismethods fulfil the requirements for the prediction ofmember strength and stability, with some constraints,satisfying the conventional column and beam–columndesign limit-state checks. Although there have beenmuch work on the plastic hinge analysis of 3-D framestructures, the issues related to different theoretical andnumerical formulations and their accuracy and efficiencyin solving large frameworks are not addressed well. Theresearch presented in this paper is an extension ofadvanced analysis for 2-D frames [2] to 3-D frames [3–5], reflecting the current trend towards the rationalisationof advanced analysis procedures.* Corresponding改进非线性塑性铰空间框架结构的分析摘要：这份研究报告表明三维的框架结构与二维逻辑性塑性铰的关联，梁柱公式化的表述并嵌入横断面移动为基准，并考虑轴力、弯曲和扭力的移位之间的关系。发达的计算机程序作出通过每个物质成分作为一个基本部件做模型的塔器和框架可弯曲的负载量，它也能预报可弯曲负载量与轴向扭力和横向扭力的不稳定性的关联，这对预报非线性空间结构的作用是必不可少的，以便非线性空间结构的性能和部分成分一些原理能被输入计算机。重要的非线性通过使用浓缩的塑性铰方式被制作模型，塑性铰和成分末端是容许存在。数值的例子包括集合学和重要的非线性，两者习惯于证明目的的分析方法和电脑程序的稳定性，精确性。

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Research on the construction safety management of Civil EngineeringIn recent years, the construction accident in civil engineering in our country often occur. This not only caused casualties, also caused great loss of national property, and resulting in a very bad social influence. Therefore, in our country, the construction units in the civil engineering construction projects, shouldstrengthen the construction safety management, all aspects ofsecurity control for engineering, to prevent dangerous accidentsin the end it all. The cause of the civil engineering constructionaccidents are in many aspects. In order to enhance security,should be combined with the characteristics of construction projects and the enterprise's internal and external conditions, the rational allocation of production factors, optimization of management process. In order to realize the construction safetymanagement, construction units should establish a safety management system of a project, it should be carried out from the following aspects:A construction safety consciousness, cultivate the modern safety science theory, occurrence of unsafe human behavior causedcasualties. To implement safety management, it should becombined with psychology, behavioral science to strengthen the education and training of employees in production safety,improve the consciousness of safe production, so as to guide the safety production behavior of employees. For the construction enterprises should strengthen safety awareness and educationproject personnel, developing the regular safety education to the construction personnel involved in the project, and to carry outsecurity work. Three level education to the new participate in the work of the operating personnel; often transform types of employees, should be safety training for new types of work, makeoperation personnel matters needing attention can be familiar with the safe operation of the. In order to make safe productionconsciousness win support among the people, enterprisemanagement personnel but also in engineering project, using a variety of promotional tools to start a variety of education,cultivate the construction personnel safety consciousness. Andin the management of enterprises, the production safety systemthought to. Leaders at all levels and enterprises in issuing the project production task, should also carry out safety productionmeasures. Such as the production safety requirements to the construction personnel, so conducive to safe thought into the production of management, let each employee has consciously in the psychological sense of , the establishment of management system for safety in production in addition to strengthen production safety education and awareness of construction project staff, should alsoestablish a safety management system, protect the system from the construction enterprise safety in production of. In order toavoid the frequent occurrence of sudden accident, the construction enterprise should according to the project, to develop a comprehensive, the system of safety management,and invest the necessary manpower and funds to ensure the implementation of the project. Ensure the production safetyconstruction from the system implementation, the project section of construction enterprises should establish the safety inspectionsystem, and regularly to the project construction of the security check. Make a clear record of project construction process,record the dangerous post, and regularly check the work. Self evaluation and construction team every week to organize asafety activities, the project department to make regular safetyevaluation for project production. Construction enterprises in theconstruction of civil engineering, in order to establish a safety management system, need to make corresponding technical measures for safety management system, a comprehensivescientific standard for , the safety work of construction enterprise project technical measures should be prior to commencement of for engineering and technical measures should be strict examination and approval, the approval before implementation. If the design changes during construction, corresponding safety technical measures should be coordinated with the adjustment,will follow. The safety technical measures enacted personnel andparticipation, should fully understand the project as the construction scheme, construction environment, the actualoperation has, and combined with relevant laws and regulations or the security policy to establish safety technical measures,which can ensure the safety measures. In civil engineering construction of large, corresponding safety technical measuresshould be formulated more comprehensive and more specific,must be carried out through the whole process of construction,and mainly covers to other engineering safety. To establish the system of safety management, construction enterprises should also be strict safety before the construction of the project, technical personnel should to the technical measures for the construction personnelwork. Such as technical personnel issue written materials relatedto the construction personnel, and the implementation of safety technical measures of construction workers to regularly check;when technicians found construction personnel in violation oftechnical measure behavior, to give timely corrected. When theconstruction personnel technical mistakes when amended and supplemented immediately. In order to ensure the safety ofconstruction enterprises to implement, should take theseinspection of production safety measures the formation of rules and regulations, require employees to strictly abide by, so to ensure safety production system. At the same time, the construction enterprises can also follow the specific constructiondevelopment situation, formulate a set of safety technical measures linked to reward and punishment system, to strictly abide by the department or individual production safety, strictsecurity checks to reward, and if there are penalties for violations of the phenomenon. At the same time should have a goodproduction safety supervision work, and sent to the specialized production safety supervision work. When there is potential safety hazard factors in project development, should be timely analysis and inspection and make treatment immediately, so thatthe safety management to implement, implement the specificsystem, ensure the feasibility of production safety. The range ofcivil engineering projects involved in the construction processmore widely, because the factors which affect the engineering safety more. But in the construction process, the occurrence of safety accidents is often unexpected, with occasional andunexpected strong. These come unexpectedly accidents, serious damage often caused casualties and , strengthen the safety production and environment management in civil engineering construction process,environment is an important factor influencing the construction safety. So in order to guarantee safety in production, enterprises should be to strengthen the management of construction site. As in the construction site, the unnecessary equipment and surplus materials, should be timely treatment. In the pile construction materials in order to keep the construction site, the patency of the road accident, ensure to timely rescue, this is to protect the safety measures to realize. And construction enterprises shouldstrictly abide by the rules and regulations, which occurred on theconstruction site of the waste, garbage bag, cement, waste materials and other items should be clear, it can keep the siteclean, to create a civilized construction environment for safe construction. Create a safe production environment construction enterprises, should also be reflected in the risk disposal of equipment. For some such as the construction of electricity,dangerous equipment, cloth rod is used, should by the competent department of enterprise safety approval approval,the approval before they can be put into use after. And in the process of construction of civil engineering, a comprehensive analysis of the conditions of construction project. Some of the effects of environmental factors of the quality of construction, totake timely measures, and to conduct a comprehensivespecification, so that can realize the safe construction quality engineering to create good conditions.