查询词典 structural engineering

Based on investigating the short and intermittent structural plane, surrounding rockmass of the huge underground powerhouse in Three Gorge has been divided into five statistical similar areas according to its characteristic of rockmass structure by applying structure plane network simulation. Distributed characteristic of structural plane has been studied and based on it mechanics macrocharacteristic has been studied:(1) It is the first time that based on the result of structural plane network simulation rockmass quality of every structure area has been studied with applying blurred information optimum seeking technique and be compared with and RQD method. The result indicated that it has better effect to evaluate rock quality with blurred information optimum seeking technique.(2) It is the first time that the interrelated relationship of the result of in-suit rockmass deformation test and fractal characteristic of structure on test point has been applied to determine rockmass deformation parameter. The question of evaluating deformation parameters of engineering rockmass has been solved.(3) Anisotropy strength parameters have been determined by applying shear zones simulating method. The result indicated that there are different strength parameters in every structural area, after comparing the result of Fast Lagranian Analysis in continua number simulation method with that of method of weighted mean according to continuity. The result indicated that when a suitable reduction coefficient is been considered rockmass strength parameters can be simply and fast determined with method of weighted mean according to continuity where there is not enough test result.(4) Damage characteristic has been studied based on analysis fractal characteristic of structural plane network by applying fractal-damage coupling method. It is the first time that the concept of damage degree has been set up to evaluate rockmass quality according to the biggest principal damage.

通过对短小、断续性结构面统计特征的研究，将地下厂房区划分为五个岩体结构统计均质区，应用结构面网络模拟技术研究了各个岩体结构均质区结构面的发育分布特征，并以此为基础对岩体宏观力学特性进行了深入研究：(1)首次通过在结构面网络模拟计算结果的基础上，应用模糊信息优化技术研究了厂房区各个岩体结构分区的岩体质量并与岩体基本质量指标研究法、岩体质量指标RQD值研究法作了对比，结果表明以结构面网络模拟结果为基础，应用模糊信息优化技术进行岩体质量评价能够取得很好的效果，解决了工程岩体质量的定量评价问题；(2)首次通过对已有的现场大型岩体变形试验结果的分析及相应试验点岩体结构分形特征的研究，建立了结构面分布的分形维数和岩体变形指标间的相关关系，并首次应用这种相关关系根据结构面网络模拟及分形维数计算结果确定了缺少试验结果的地下厂房各工程部位的岩体变形指标而且应用于围岩稳定性计算，解决了工程岩体宏观变形参数的评价问题；(3)应用在结构面模拟网络图上模拟岩体剪切破坏带的方法，得出了岩体在不同方向上的强度参数，结果表明岩体的强度特性与结构面的发育方向和程度有着明显的关系，各个岩体结构均质区具有不同的强度参数；同时还通过应用拉格朗日差分法对岩体强度指标的数值分析并与按连通率加权平均计算法对比表明，按连通率加权平均计算法在考虑合理的折减系数情况下，可以简单快速地对缺少现场大型试验结果的具体工程部位实现岩体强度指标的估计，通过以上研究解决了工程岩体抗剪强度参数的评价问题；(4)通过结构面网络分形维数的研究，应用分形损伤耦合分析方法，研究了厂房区岩体的损伤特征，并首次引入"损伤度"的概念，建立了应用最大主损伤评价岩体质量的指标体系。

According to engineering practical requirement,by adopting structural frequency sensitivity formula,a scheme dealing with a parameter calculation model for a structure and its structural optimal model is proposed in this paper,and a three-dimensional structure s frequency topologhy optimal method is developed.

根据工程实际要求，利用频率灵敏度公式，提出了结构特性参数计算模型与三维结构优化模型的处理方案，研究了三维结构的频率拓扑优化设计方法和算法。

It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.

论文提出了一个全新的加载测试系统种类，该加载系统是在阻尼器工作原理基础上，利用电动机拖动阻尼器运转，从而阻尼器产生一个与运动方向相反的阻尼力矩，该力矩作用在电动机上实现对电动机加载测试；同时，论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构，该种阻尼器的工作特性在一定范围内可进行调节；论文分析了电磁阻尼器的工作原理和结构特点，运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式，分析了涡电流在转子杯内的分布图，并对阻尼力矩计算方法进行了研究，建立了电磁阻尼器的数学模型，分析了电磁阻尼器结构参数和阻尼力矩之间的关系，对电磁阻尼器的设计和分析方法进行了研究，为电磁阻尼器的工程设计建立了理论基础；设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统，对该控制系统硬件电路各部分进行了分析和设计，对软件进行了设计，并对控制电路进行了试验调试，该系统满足所提出的加载指标要求。

Through the work of the engineering and hydrology geology investigating, geologic structural planes investigating, acoustic test and deformation monitoring, and study on distribution rules of geologic structural planes, damage modes of slope, scope of loose zone, deformation rules with FLAC3D numerical simulation, the engineering proterties of loose zone is knowledged.

通过对金堆城深凹边坡松动岩体进行工程地质和水文地质的调查、节理裂隙调查、声波测试、变形监测等现场工作，研究了边坡结构面分布规律，边坡潜在的失稳模式，松动范围，变形规律，结合FLAC~(30)数值模拟，基本认识了金堆城深凹矩形边坡松动岩体工程特性。

Dongguan City Qinglong Architecture Civil Engineering Company Limited has reinforced waterproof building, structural reinforcement of the special construction quality, professional to undertake the design of building structural reinforcing,Anchor, visco-steel-clad steel, carbon fiber reinforcement, crack repair, foundation reinforcement, building waterproof plugging leakage and other works and technical advice.

东莞市青龙土木建筑加固工程有限公司具有建筑防水、结构加固的专项施工资质，专业承接建筑结构加固补强设计、植筋锚栓、粘钢包钢、碳纤维加固、裂缝修补、基础加固、建筑防水堵漏等工程的施工及技术咨询。

Structural Health Monitoring has emerged as an important research area incivil engineering. Damage detection technique based on changes of structuraldynamic properties is the core of structural health monitoring. However, most ofthe existent methods of damage detection and location depend on the originalmessage with the damaged message to identify the damage position.

结构健康监测已经成为土木工程学科发展的一个重要领域，基于结构动力特性改变的损伤识别又是结构健康监测的核心内容，然而目前的损伤定位探测的各种方法，大多依赖于原始信息进行对比，这无疑会由损伤前后结构信息不在同一噪声水平而带来误差，甚至是错误。

In the light of adaptability of movable platforms, stratum structural characteristics and sedimentary characteristics, the thesis divides the study area into four subzones as follows: engineering geological subzone of the recently deposited tidal flat, engineering geological subzone of the Gaizhou Tidal Flat, engineering geological subzone of offshore areas, and engineering geological subzone of tidal ditches; and amenity of ocean engineering is discussed in each subzone.

论文根据移动式平台的适应性及地层结构特征、沉积物性质，将本研究区域分为新近潮滩工程地质区、盖州滩工程地质区、浅海工程地质区、潮道工程地质区，分区讨论了海洋工程的适宜性。

Therefore, the goal of this thesis is to reveal how a set of textual features in RA method section are used in three different disciplines, including (1) Botany,(2) Structural Engineering,and (3) consumer behavior, to see whether the use of these features indeed are different among these three fields and thus leading to distinctive writing styles of method texts, as well as to see what and how aspects of disciplinary cultures are reflected on the use of these features.

因此，本论文主要的目的在於探讨在植物学、结构工程、以及消费者行为这三种学科的期刊研究方法之间，是否在一系列文本语言形式的使用会有差异？

Doctor's Degree in Structural Engineering from Tianjin University, China under the cooperated instruction of Tianjin University, China and University of Basilicata, Italy

天津大学与意大利Basilicata大学联合培养博士生毕业，获工学博士学位

For the enlargement of the new runway the Funchal Airport has won the Outstanding Structures Award, given by International Association for Bridge and Structural Engineering.

凭借新跑道的扩建，丰沙尔机场也赢得了国际桥梁与结构工程协会颁发的杰出结构奖。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。