由橡胶垫连接的液化天然气储存罐沉降变形分析

利用罐体各点沉降数据,建立了回归模型和灰色系统模型,分析了各沉降点变化规律,确定了整个罐体和橡胶垫的变形规律,预测了其不均匀沉降.     

三轴压缩试验中橡皮膜约束影响的校正

基于风化砂的三轴压缩试验，讨论了橡皮膜约束对土强度的影响。结果表明橡皮膜的约束力随试样的径向应变的增大而增大，橡皮膜的约束将使测得的无粘性土的排水强度偏大。在此基础上提出了一种校正橡皮膜 约束的比较简易的方法。     

应用ANSYS对夹层橡胶垫耗能低剪力墙结构的性能分析

本文针对低剪力墙结构延性差、耗能能力差、结构抗震性能差等问题，提出一种新型耗能低剪力墙结构，并应用有限元分析软件ANSYS对同截面整体墙结构及耗能墙结构进行了数值模拟计算，并对其破坏形态、耗能能力、承载力情况、变形性能等进行了对比分析。结果表明，夹层橡胶垫耗能低剪力墙结构具有良好的延性和抗震性能。     

隔震楼面设计研究

本文就上海某建筑的隔震楼面设计作了介绍。其中包括建筑所在场地的地震动输入确定、建筑结构的楼层动力特性分析、楼层弹塑性地震反应分析以及隔震装置的力学参数确定和隔震效果分析。     

重质碳酸钙的开发利用

从碳酸钙的主要消费领域入手,分析其利用现状。从加工技术进步和消费领域工业发展两个方面探讨其发展前景,为碳酸钙的开发利用和碳酸钙加工企业的产品开发提供经济技术方面的参考。     

矿物粉体的表面能及对硅橡胶增强作用的影响

采用平衡接触角法测定了几种矿物粉体及硅橡胶基体的表面能,对矿物／硅橡胶的界面张力、平衡粘附功等热力学参数进行了计算,分析探讨了矿物填料／硅橡胶之间界面相互作用与复合材料力学性能的关系,提出粘附功（Ｗａ）与界面张力（γＳＬ）的比值（Ｗａ／γＳＬ）是衡量矿物填充硅橡胶的力学性能的一个重要参数。     

Shake table tests on a mass eccentric model with base isolation

A mass eccentric structure is usually more seismically vulnerable than its concentric counterpart because of the coupled torsional–translational response of such structures. In this work, dynamic characteristics and response of a five‐storey benchmark model with moderate mass eccentricity were investigated using a shake table, simulating four different ground motions. The effectiveness of laminated rubber bearings (LRB) and lead‐core rubber bearings (LCRB) in protecting eccentric structures was examined and evaluated in relation to translational and torsional responses of the benchmark model. It was observed that both translational and torsional responses were significantly reduced with the addition of either a LRB or LCRB isolated system regardless of the nature of ground motion input. The LRB were identified to be more effective than LCRB in reducing model relative displacements, the relative torsional angle as well as accelerations, and therefore provided a better protection of the superstructure and its contents. On the other hand, LCRB rendered a smaller torsional angle and absolute displacement of the base isolation system, hence a more stable structural system. Copyright © 2003 John Wiley & Sons, Ltd.     

An advanced analytical model for high damping rubber bearings

Base‐isolation technologies have been developed over the years in attempts to mitigate the effects of earthquakes on structures and potentially vulnerable contents in earthquake prone areas of the world. The high damping rubber bearing (HDRB) is a relatively recent and evolving technology of this kind. The isolator shifts the fundamental period of the base‐isolated structure to a value beyond the range of the plentiful energy‐containing periods of earthquake motions and supplies significant damping to dissipate energy caused by motions. Nevertheless, the highly non‐linear mechanical behaviour of the HDRB is so complex, especially at large strains, that it is difficult to model it analytically. In this paper, an extensive study of experimental tests for identifying the mechanical characteristics of the HDRB is presented. By modifying the Wen's model to include the rate‐dependent effects, an advanced analytical model in an incremental form for the HDRB is also proposed. A very good agreement between the analytical and experimental results has been obtained. It is illustrated that the proposed mathematical model can predict well the mechanical behaviour of HDRB bearings, even at large shear strain. Copyright © 2003 John Wiley & Sons, Ltd.     

多层建筑结构水平剪扭-竖向地震反应的智能复合隔震控制

本文在提出了“碟形弹簧-橡胶隔震垫”和MR阻尼器组合而成的智能复合隔震系统的基础上，建立了智能复合隔震系统对多层建筑结构“水平剪扭-竖向”地震反应控制的设计计算方法。提出了智能复合隔震系统对建筑结构水平地震反应的模糊半主动控制策略和对建筑结构竖向地震反应的被动控制方法。以一个五层框架结构为例进行了仿真分析。分析结果表明，本文提出的智能复合隔震系统是一种十分简单和有效的隔震系统。它可克服建筑结构常规隔震系统的两个主要缺点，有效地抑制多层建筑结构的多维地震反应。     

Seismic performance of bridges with novel SMA cable-restrained high damping rubber bearings against near-fault ground motions

This study presents a novel type of shape memory alloy (SMA) cable-restrained high damping rubber (SMA-HDR) bearing, which is particularly suited to near-fault (NF) regions where the pulsing effect potentially exists in the ground motions. The working mechanism of the bearing is first described, followed by an experimental investigation on a full-scale SMA-HDR bearing specimen. The test results confirm the efficient restraining effect offered by the SMA cables, which contribute to 65% and 24.4% of the lateral load resistance and total energy dissipation, respectively, prior to the initial fracture of the SMA cables. The failure of the cables is initiated near the end grip where moderate stress concentration exists at this region. Following the experimental study, the numerical modeling strategy for the bearing is discussed, and a case study is then presented, demonstrating the application of the SMA-HDR bearings in the Datianba #2 highway bridge, a real project that first adopts the proposed bearings in the world. A simplified design process is introduced for the bridge with novel SMA-HDR bearings to mitigate the potential damage during strong earthquakes especially the NF ones. The system-level analysis on the prototype bridge shows that the novel SMA-HDR bearings equipped with ten 7×7×1.2 SMA cables in each bearing could reduce the average maximum bearing displacement (MBD) by nearly 30% compared with the conventional bridge with HDR bearings. The application of the novel SMA-HDR bearing can significantly alleviate the pounding effect, especially under the NF earthquakes. The presence of the SMA cables tends to increase the maximum force response of the piers, but this effect is minor and under control.