结构工程

First by testing the practical multilayer insulation in a cryogenic tanker, which is the carilometer in my paper,some affecting factors on multilayer insulation are analysed, then by using the low-temperature and vacuum environment caused by multilayer insulation, the effective thermal conductivity of multiple fiber paper with 5 layers is tested.Through Newton interativemethod,an empirical formula is deduced to computer the thermal conductivity of fiber paper,The errors between experimental thermal conductivity and the calculated conductivity by empirical formula are below10%,so the formula of fiber conductivity can be applied to practical enginnering.

为探索改善工程应用中高真空多层绝热层绝热性能的方法，本文实验研究中首先测量了包扎在实际低温储罐上不同结构的高真空多层绝热层的绝热性能，并分析了环境温度、环境压力，层数、不同隔热材料的组合等因素对工程应用中的高真空多层材料绝热性能的影响；然后利用多层绝热层中的低温真空环境测量5层干法纸在不同温度区间内的表观导热系数，在有限实验数据的基础上用牛顿迭代数值拟和出计算5层干法纸表观导热系数的经验公式，对比经验公式计算值和实验测量值，发现二者的误差在10%以内，因此在工程应用中可用本文的经验公式计算干法纸在低温下的导热系数。

If the fire resistance of concrete is increasing,the fire resistance of building structures is enhanced relevantly.

建筑结构耐火设计是消防工程和建筑抗灾设计的重要研究领域，结构材料耐火性的研究是建筑结构耐火研究领域的主要方向之一，作为主要结构材料的混凝土的耐火性一直备受重视。

The influence of superelevation in the much longer transitional zone on the design of certain structures,a practical case is investigated,and it is advanced that through the optimum design of superelevation, the structures appeared in the transitional zone may not be designed in the superelevation run off,and such design is beneficial to the design and construction of bridges.

在公路路网改造工程项目中，常常遇到旧路补强设计，通过工程实例和理论分析，解决旧路补强设计中容易出现的补强层厚度随着老路回弹模量的增大而增厚的现象，即通常所说的"反常现象"；结合工程实例，通过优化超高设计，将位于缓和曲线段内结构物不设置在超高缓和段上，给桥梁的设计和施工带来极大的方便。

According to the specific features of AEC industry and info levels of AEC product, concepts of drawing cell, granularity of DC object and collaborative links are introduced to realize the CAD info integration, which maps the geometrical and topological constraints of product info into inner-correlation and outer-hyperlink of DCO.

文中针对工程设计的特点和工程产品的信息结构层次，通过"图元对象"概念的引入、图元对象粒度的建立和协同链接集成，在图元对象的内部关联和外部链接两个层次上建立了工程产品CAD信息集成模型。

The wind tunnel experiment,project argument,structure calculation analysis, calculation of the joint bearing capacity, calculation and experiment of the support-joint load carrying capacity of a super-span stretched stereoscopic steel pipe trussing are introduced- A normal usage period of the project after it had been built indicates that the major trussing and the supporting structure below have enough bearing capacity and deformability, and meet the demands of design code and actual usage.

摘要］介绍了某超大跨度伸臂立体管桁架结构的风洞试验、方案论证、结构计算分析、节点承载力验算、支座节点承载力验算和试验等。该结构建成后一段时期的正常使用表明，工程的主体桁架和下部承力结构具备较强的承载变形能力和可靠的安全度，满足设计规范和实际使用要求。

The presterssed anchor cable frame combined with backwall, drainage is necessary due to longtime sability and permanent utilization.Firstly,according the study of engineering of geology situation of the high slope, the mechanism of deformation failure and the major hazard of the high slope of PanMei is analysed comprehensively.And the whole slope is divided into two different geology enginnering areas:Western slope(1160 section plane -1240 section plane)and Eastern slope(1240 section plane -1320 section plane). The result of 3D numerical simulation is the same as geology judgement. Later,slope cut (1:0.75) is implemented based on the engineering comparison and criterion.Meanwhile, Limit equilibrium method , Monte Carlo Probabilistic slope stability the stability , Sensitivity analysis and Finent element method of for assessing the cutted slope stability is carried out. The result indicates that Western slope is instable, Eastern slope is relatively stable.So much attention should be paid to Western slope.Different reinforcement measures in different areas are given according to its stability and meet economical request. Gravity wall is introduced in accordance with landform in order to prevent small falling at the foot of the high slope ,which will be a threat to the high slope stability. Handling measure is also applied to Eastern slope. At last,FLAC3D numerical analysis shows the feasibility and reasonableness of the handling measure of the high slope.

论文首先研究了边坡的工程地质条件，全面分析边坡的变形破坏机制和边坡的主要地质灾害，将边坡分为西段不稳定边坡区(1160剖面～1240剖面)和东段相对稳定边坡区(1240剖面～1320剖面)，通过三维数值模拟再现了边坡在自重作用下的破坏机制和过程；在此基础上通过工程类比和规范要求，确定按照1：0.75进行放坡处理，并分析了放坡后边坡的稳定性状况，分别通过极限平衡法、蒙特卡洛法概率分析、参数敏感性分析和有限元稳定性计算等多种方法对边坡在各种工况下的进行稳定性研究，计算结果表明，西段边坡较之东段边坡稳定情况差，是边坡支护的关键之处，而东段边坡相对是稳定的；边坡的综合治理措施选用的是框架锚索并结合挡土墙和排水工程，治理设计根据不同区段的稳定性情况采用不同的支护结构，做到了经济合理的要求；在边坡的坡脚设置重力式挡土墙，防治边坡小规模的崩塌，会对上部的锚索支护护造成不利影响，进而影响边坡的稳定；东段边坡的填方区也给出了治理对策；最后通过三维显示拉各朗日有限差分程序(FLAC3D)模拟了高边坡放坡和支护效果，论证了治理措施的有效性和合理性。

Elastic fibers were well-distributed,and vascular endothelial cell did not immigrate.We suggested that expression of ectogenic VEGF triggered paracrine and autocrine of VEGF of chondrocyte and co-acted with VEGF receptor 2 to enhance permeability of chondrocyte and improve internal construct of engineering cartilage,and prevent vascularize proceed.

转VEGF基因软骨细胞作为组织工程的种子细胞与pluronic F-127复合后可于裸鼠体内形成转基因组织工程软骨，与对照组相比，转VEGF基因组织工程软骨具良好的生物学特性，结构均一且与正常软骨组织相似，软骨ECM的GAG、COLⅡ、COLⅩ增多，RunX2、Sox9表达增高，细胞处于增生期的肥大状态，初步分析其原因可能是转染后外源性的VEGF持续表达触发了软骨细胞VEGF自分泌，并通过VEGFR-2作用于软骨细胞，提高了软骨细胞活性，促进其存活与增殖，但未在软骨组织内引起血管内皮细胞的迁移及小血管形成。

At present, STEDI employs about 320 staff, mainly consists of several independent design subinstitution majored in general plan, architecture, decoration, structure, roads and bridges, water supply/drainage, environmental control, machinery, water-proofing, computer, exploration and survey, supervision, geotechnics, economics evaluation, electricity and etc, and Pudong Subinstitution, Metro and Light Rail Design and Research Subinistitution, Architecture Design and Research Subinstitution.

上海市隧道工程轨道交通研究院现有职工320余人，设有总体规划、建筑、装饰、结构、道桥、给排水、环控、机械、电气、防水、计算机、勘察、监理、岩土工程和工程经济等专业组成的多个独立设计所及浦东分院部门，并与香港合资成立上海扬申建筑发展顾问有限公司。

In the process of optimization design using ANSYS, the Optimized circulation may be intermitted because of some problems in modeling, Meshing, selecting design variables, state variables and objective functions, and optimized method.

引言应用工程优化设计软件进行结构分析[1～2]和优化设计[1，3]，可大大提高结构设计人员的工作效率，减轻结构设计人员的工作强度，是结构设计人员应具备的一项基本技术。

With the development of foundation establishments and the increase of construction investment, exploring new material and the exploitation and use of new technology in key projects of bridge, tunnel and so on will prolongate the service life of engineering structure, advance investment benefit and guarantee safe traffic passage.

随着我国基础工程设施建设投资力度的进一步增大，在桥梁、隧道等关键工程领域中探索新材料和新工艺的开发和应用，对于延长工程结构的使用寿命，提高投资效益，保证交通运输的安全畅通等将具有重要的意义。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐