Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 19

年份

2022 1

2021 1

2016 4

2013 1

2012 1

2011 4

2010 5

2001 1

2000 1

展开︾

关键词

混凝土面板堆石坝 2

AHP法 1

TOPSIS法 1

信息管理系统 1

反演分析 1

变形安全 1

坍塌 1

坝型优选 1

堆石坝 1

堆石混凝土坝 1

大坝 1

奇异性理论 1

安全建设 1

安全性 1

安全评价 1

对策研究 1

技术进展 1

拱坝 1

材料特性 1

展开︾

检索范围：

排序：展示方式：

Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

《结构与土木工程前沿（英文）》 2011年第5卷第1期页码 79-89 doi: 10.1007/s11709-010-0010-9

摘要： Safety assessment of the 62 m high Sance Rockfill Dam based on long-term monitoring results and their simulation by numerical models is presented in the paper. Unexpectedly large settlements and horizontal movements of the crest together with the steep downstream slope questioned the safety of the dam. Calibrated 2D and 3D models fitting the monitoring results were applied for the safety assessment of the dam including slope stability analysis and estimation of the clay core cracking and hydraulic fracturing hazard. The modeling results contributed to the rehabilitation concept and project of the dam.

关键词： rockfill dam path dependence creep calibration cracking hydraulic fracturing hazard

HTML PDF 收藏

Three-dimensional seismic response analysis of a concrete-faced rockfill dam on overburden layers

Dakuo FENG, Ga ZHANG, Jianmin ZHANG,

《结构与土木工程前沿（英文）》 2010年第4卷第2期页码 258-266 doi: 10.1007/s11709-010-0031-4

摘要： Reasonable seismic response analysis of a high rockfill dam is of great engineering significance in guiding its design and ensuring its seismic safety during operation, especially of a concrete-faced rockfill dam (CFRD) on overburden layers. The three-dimensional seismic behavior of the Miaojiaba CFRD is simulated and analyzed by the finite element method (FEM). The results indicate that: 1) the amplification coefficient along the dam axis gradually increases with the altitude, and reaches maximum at the dam crest; 2) the vertical residual deformation mainly exhibits downwards and reaches maximum near the dam crest; 3) the earthquake significantly aggravates the deformation of peripheral joints; 4) the impounding condition and overburden characteristics have great effects on the dam’s seismic response.

关键词： concrete-faced rockfill dam (CFRD) overburden layer dynamic analysis finite element method (FEM)

HTML PDF 收藏

Hypoplastic constitutive modeling of wetting deformation of weathered rockfill materials

Erich BAUER, Zhongzhi FU, Sihong LIU,

《结构与土木工程前沿（英文）》 2010年第4卷第1期页码 78-91 doi: 10.1007/s11709-010-0011-8

摘要： The wetting deformation of weathered rockfill materials has been attracting growing attention from both engineers and scientists. The importance of realistic predictions of wetting deformations for high earth and rockfill dams is a strong motivation to establish a suitable constitutive model. Recently, the hypoplastic constitutive model by Gudehus and Bauer was extended by introducing solid hardness depending on the state of weathering. The extended model takes into account the influence of the current density, the effective stress state, the rate of deformation, and the time dependent process of degradation of the solid hardness. In the present paper, the performance of this model is evaluated by comparing numerical simulations with experiments obtained from a water sensitive rockfill material. In particular, triaxial compression paths and creep deformation under deviatoric stress states are considered. Finally, the constitutive model proposed is used to study the influence of a degradation of the solid hardness on the long term behavior of a hypothetical fill dam.

关键词： rockfill dams weathered granular materials hypoplasticity solid hardness creep stress relaxation

HTML PDF 收藏

Behavior of materials for earth and rockfill dams: Perspective from unsaturated soil mechanics

Eduardo E. ALONSO, Rafaela CARDOSO,

《结构与土木工程前沿（英文）》 2010年第4卷第1期页码 1-39 doi: 10.1007/s11709-010-0013-6

摘要： The basis of the design of earth and rockfill dams is focused on ensuring the stability of the structure under a set of conditions expected to occur during its life. Combined mechanical and hydraulic conditions must be considered since pore pressures develop during construction, after impoundment and in drawdown. Other instability phenomena caused by transient flow and internal erosion must be considered. The prediction of the hydro-mechanical behavior of traditional and non-traditional materials used in the construction of dams is therefore fundamental. The materials used for dam’s construction cover a wide range from clayey materials to rockfill. In a broad sense they are compacted materials and therefore unsaturated materials. A summary of the current level of knowledge on the behavior of traditional materials used in the construction of dams is presented in the paper. Regular compacted materials (with a significant clay fraction), rockfill and compacted soft rocks are studied with more detail. The latter are non-traditional materials. They are analysed because their use, as well as the use of mixtures of soil and rock, is becoming more necessary for sustainability reasons.

关键词： dams unsaturated soil mechanics suction rockfill clayey soil mixture

HTML PDF 收藏

Confining pressure effect on dynamic response of high rockfill dam

Xuexing CAO, Yunlong HE, Kun XIONG,

《结构与土木工程前沿（英文）》 2010年第4卷第1期页码 116-126 doi: 10.1007/s11709-010-0014-5

摘要： Studies show that the dynamic properties of rockfill are strongly dependent on the confining pressure. Therefore, confining pressure effect has become a very important factor in the seismic analysis of high rockfill dam. The relationships of dynamic shear modulus versus dynamic shear strain and damping ratio versus dynamic shear strain had been improved to a certain degree on the basic of widely used Hardin-Drnevich constitutive model in this paper. Then a new model that could consider confining pressure effect has been established. Regression analysis was carried out of the dynamic triaxial experimental data of the damming materials in the Changheba hydropower station of Sichun Province, China. The results show that, the new model can fit the test data well under various confining pressures. A corresponding computational procedure was compiled and applied in the dynamic response analysis of the Changheba Dam. Comparing the calculation results between the new constitutive model and the ordinary Hardin-Drnevich model, it can be seen that the result is conservative to some extent without considering confining pressure effect.

关键词： confining pressure effect high rockfill dam dynamic response Hardin-Drnevich constitutive model

HTML PDF 收藏

Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

《结构与土木工程前沿（英文）》 2021年第15卷第1期页码 109-123 doi: 10.1007/s11709-021-0693-0

摘要： The anisotropy of rockfill materials has a significant influence on the performance of engineering structures. However, relevant research data are very limited, because of the difficulty with preparing specimens with different inclination angles using traditional methods. Furthermore, the anisotropy test of rockfill materials is complex and complicated, especially for triaxial tests, in which the major principal stress plane intersects with the compaction plane at different angles. In this study, the geometric characteristics of a typical particle fraction consisting of a specific rockfill material were statistically investigated, and the distribution characteristics of particle orientation in specimens prepared via different compaction methods were examined. For high-density rockfill materials, a set of specimen preparation devices for inclined compaction planes was developed, and a series of conventional triaxial compression tests with different principal stress direction angles were conducted. The results reveal that the principal stress direction angle has a significant effect on the modulus, shear strength, and dilatancy of the compacted rockfill materials. Analysis of the relationship between the principal stress direction angles, change in the stress state, and change in the corresponding dominant shear plane shows that the angle between the compacted surface and dominant shear plane is closely related to interlocking resistance associated with the particle orientation. In addition, different principal stress direction angles can change the extent of the particle interlocking effect, causing the specimen to exhibit different degrees of anisotropy.

关键词： rockfill inclination of specimen preparation anisotropy mechanical property mechanism

HTML PDF 收藏

高面板堆石坝安全性研究技术进展

马洪琪,迟福东

《工程（英文）》 2016年第2卷第3期页码 332-339 doi: 10.1016/J.ENG.2016.03.010

摘要：

混凝土面板堆石坝直接利用当地材料，适应性强，经济优势明显，是西部地区一批拟建高坝的重点比选坝型。中国面板堆石坝技术取得了200 m 级高坝的成功经验，为250~300 m 超高面板堆石坝的发展提供了必要的技术储备条件。本文分析了中国及世界上主要200 m 级高面板堆石坝的成功经验及暴露的主要问题，论述了250~300 m 级超高面板堆石坝安全建设面临的主要技术问题和研究取得的最新进展，并提出了今后的研究重点和思路。

关键词：高面板堆石坝安全性技术进展

HTML PDF 收藏

高土石坝安全建设重大技术问题

马洪琪, 迟福东

《工程（英文）》 2016年第2卷第4期页码 498-509 doi: 10.1016/J.ENG.2016.04.001

摘要：

土石坝由于对地基具有良好的适应性、能就地取材及充分利用建筑物开挖渣料、造价较低、水泥用量较少等优点，是西部地区一批拟建高坝的重点比选坝型。糯扎渡高心墙堆石坝的成功建设，解决了250 m 级土石坝重大关键技术难题。本文通过系统总结已建成的糯扎渡等高心墙堆石坝建设的经验，凝练高土石坝建设面临的变形控制、渗流控制、坝坡抗滑稳定、泄洪安全及控制、大坝安全建设与质量控制、安全评价及预警等关键科学技术问题，全面深入论述了已有的研究成果和基本结论，为未来300 m 级高土石坝建设提供参考和重要的技术支撑。

关键词：高土石坝安全建设重大技术问题

HTML PDF 收藏

堆石坝坝型优选模型及评价方法研究

陈永兴,常昊天,鲁文妍,任炳昱

《中国工程科学》 2013年第15卷第4期页码 96-101

摘要：

坝型优选属于多因素、多方案的复杂决策问题，不仅需要经验丰富的熟悉实际工程情况的专家，而且需要运用客观的分析决策技术。本文综合分析堆石坝坝型选择中的各种影响因素，建立了坝型方案优选的递阶层次结构模型。考虑了层次分析法和熵权法对权重确定的不足，将两者结合起来计算综合权重，并运用TOPSIS法对模型进行求解计算，最终确定优选方案。实际应用结果表明，该方法计算简便、结果可靠，能够为堆石坝坝型优选提供科学的决策依据。

关键词：堆石坝 AHP法熵权法 TOPSIS法坝型优选

HTML PDF 收藏

300m级面板堆石坝适应性及对策研究

马洪琪

《中国工程科学》 2011年第13卷第12期页码 4-8

摘要：

系统总结了200ｍ级面板坝建设的主要经验与教训，对４座３００ｍ级面板坝典型工程进行了分析，提出了３００ｍ级面板坝需要研究的基础科学和关键技术问题。

关键词：混凝土面板堆石坝适应性对策研究

HTML PDF 收藏

高混凝土面板堆石坝设计新理念

郦能惠

《中国工程科学》 2011年第13卷第3期页码 12-18

摘要：

在分析混凝土面板堆石坝40多年经验设计及其不完全性的基础上，提出了高混凝土面板堆石坝设计新理念，即针对坝址的地形地质条件与料源情况，进行稳定安全设计、渗流安全设计和变形安全设计，阐述了稳定、渗流、变形安全设计的原则和要点，强调了变形协调原则和理论指导设计的重要性。

关键词：混凝土面板堆石坝设计新理念稳定安全渗流安全变形安全

HTML PDF 收藏

Features of seismic hazard in large dam projects and strong motion monitoring of large dams

Martin WIELAND,

《结构与土木工程前沿（英文）》 2010年第4卷第1期页码 56-64 doi: 10.1007/s11709-010-0005-6

摘要： Earthquakes can affect large dam projects in many different ways. Usually, design engineers are focussing on ground shaking and neglect the other aspects. The May 12, 2008 Wenchuan earthquake has damaged 1803 dams and reservoirs, and 403 hydropower plants with an installed capacity of 3.3GW. Among these dams were the 132-m-high Shapai RCC arch dam and the 156-m-high Zipingpu concrete face rockfill dam. These recently completed dams are dam types which, up to now, have not experienced strong ground shaking. The widespread mass movements have caused substantial damage to dams and surface powerhouses in Sichuan. The different features of earthquake hazard are presented, i.e., ground shaking, faulting and mass movements. It is proposed to prepare project-specific safety plans for all dams, which consist of a matrix where the possible hazards and the corresponding countermeasures are listed. The earthquake behaviors of the Sefid Rud, Zipingpu and Shapai dams, which, in the past, have experienced strong ground shaking from nearby earthquakes, are discussed. Finally, the need for strong motion instrumentation of large dams is discussed. It is proposed that major dams with large damage potential, dams located in areas of high seismicity, and dams showing signs of abnormal behavior be equipped with strong motion instruments.

关键词： seismic hazard arch dam concrete face rockfill dam strong motion instrumentation reservoir-triggered seismicity Wenchuan earthquake

HTML PDF 收藏

胶结颗粒料坝——环境友好的新坝型

贾金生, Michel Lino, 金峰, 郑璀莹

《工程（英文）》 2016年第2卷第4期页码 490-497 doi: 10.1016/J.ENG.2016.04.003

摘要：

笔者于2009年提出了胶结颗粒料坝的概念，目的在于修建更安全、更经济的环境友好的大坝。该坝型包括胶结砂砾石坝(曾用名胶凝砂砾石坝)、堆石混凝土坝(或胶结堆石坝)和胶结土坝。本文基于研究和实践，进一步阐述了胶结颗粒料坝的概念和原则，介绍了胶结砂砾石坝、堆石混凝土坝和胶结土坝的新进展。

关键词：胶结颗粒料坝胶结砂砾石坝堆石混凝土坝胶结堆石坝胶结土坝材料特性

HTML PDF 收藏

建设中的世界第一高坝——双江口心墙堆石坝

李善平, 段斌

《工程（英文）》 2016年第2卷第3期页码 274-275 doi: 10.1016/J.ENG.2016.03.018

HTML PDF 收藏

立堵截流戗堤堆石分叉特性研究

贺昌海,肖煥雄,胡志根,周宜红

《中国工程科学》 2001年第3卷第6期页码 69-74

摘要：

根据截流戗堤边坡的两种不同坍塌现象的特点，进行定性分析并总结其主要影响因素，包括抛投材料的抗冲能力、戗堤基础的抗冲能力、龙口水深、抛投材料的力学性质和抛投材料的浸水湿化。引用戗堤堆石的一个微结构模型，运用静态分叉和奇异性理论，进一步研究了戗堤堆石的分叉特性。结果表明，堆石内部的应力变化和拋投材料的浸水湿化是深水截流中戗堤边坡高频率、大规模坍塌的根本原因。据此，提出了实际施工时应采取的工程措施，并说明了模型戗堤边坡突然坍塌的可能性以及坍塌范围比原型要大的原因。

关键词：立堵截流坍塌静态分叉奇异性理论