Simulation Analysis on Effects of Horizontal Stiffness in Lead-Rubber Bearings 铅芯橡胶隔震支座水平刚度影响因素数值分析
On the base of other isolation lead-rubber bearings, a new bearing model including the axial-load effect is developed. 在其他铅芯橡胶隔震支座模型基础上,本文提出一种考虑轴向荷载效应的新模型。
Non-iterative computational method for the nonlinear time-history response of base-isolated structures equipped with lead-rubber hearings ( LRB) was presented. 提出了一种求解使用铅芯橡胶支座(LRB)的基础隔震结构非线性动力响应的非迭代时程计算方法。
Thermal Effect on the Mechanical Behavior of Lead-Rubber Bearing 橡胶铅芯隔震支座力学性能的温度效应研究
These formulae is not only useful for design but also helpful in evaluation of the parameters in nonlinear dynamic analysis of lead-rubber bearings. 从而为铅芯橡胶支座的设计提供参考依据,为应用铅芯橡胶支座的结构进行非线性动态分析时,确定其动力分析参数提供可供参考的计算方法。
Additionally, lead-rubber dampers are installed on head of tower to control the vibration induced by broken wires. 同时,在塔头安装铅芯橡胶阻尼器,研究该阻尼器对体系断线相应的振动控制效果。
Study on Seismic Absorption and Isolation of Railway Different High-pier Bridge by Lead-Rubber Bearing 铅芯橡胶支座在不同墩高铁路桥梁中减隔震研究
Experimental investigation on lead-rubber damper 铅-橡胶阻尼器的试验研究
Lead-Rubber Bearings have a higher original stiffness and can be easily distorted, that will help to promote the anti-earthquake function of bridges. 铅芯橡胶支座有较高的初始刚度,又能允许较大的变形,可以提高桥梁抗震性能。
Horizontal dynamic tests on lead-rubber bearings were conducted. The relations among the mechanical properties, the structural dimensions and the dynamic load applied on the lead-rubber bearing are identified. 通过对不同结构构造的铅芯橡胶支座进行水平动态力学试验,系统研究了铅芯橡胶支座动态力学性能与其结构构造及外加动载之间的关系。
Under earthquake, the sway movement of lead-rubber bearing base-isolated structure with soft soil base is more obvious. 地震作用下软土地基&铅芯橡胶支座隔震结构的摇摆运动较明显。
The protector can prevent the gonad from X-ray damage and solve the problems underlying the lead-rubber suit and skirt such as heaviness, low safety factor and cross infection. The protector also has the advantages of easy placement, accurate protection and safety. 该防护器可保护性腺使之免受X线的损伤并解决了铅-橡胶衣、裙存在的笨重,安全系数低和交叉感染的问题,而且还具有容易放置,防护精确、安全等优点。
Last, two examples, of the response of a bridge with the lead-rubber bearing, were designed and analyzed based on the conclusions and the regression formula from this dissertation. The first example is a city-railway Continuous-beam bridge. 最后,运用本文得出的结论及回归公式设计铅芯橡胶支座,并进行铁路简支梁桥、城市轻轨连续梁桥的地震响应分析。
Based on the analysis of mechanical characteristics of lead-rubber bearings, using explicit finite element software ANSYS/ LS-DYNA to analysis the nonlinear dynamic characteristics of lead-rubber bearings is presented. 本文在分析铅芯橡胶隔震支座力学特性的基础上,提出了采用显式有限元分析软件ANSYS/LS-DYNA来分析铅芯橡胶支座的非线性动态特性。
Explicit Finite Element Study of Mechanical Parameters of Lead-rubber Bearing for Nonlinear Dynamic Analysis 铅芯橡胶支座非线性动态特性的显式有限元分析
The analysis shows that the lead-rubber bearing is efficient for energy dissipation, which can lengthen the natural period of the structure, reduce the bending moment and shear force at the base of piers, and minimize the girder displacement. 分析表明:采用铅芯橡胶支座能延长结构的周期,减小桥墩底部的弯矩和剪力,并使剪力得以合理分配,同时梁体位移也不致过大,是一种有效的隔震装置。
The initial yielding force of lead-rubber bearings has an important influence on isolation effectiveness. LRB的初始屈服力对隔震效果影响较大。
Through setting up the finite element models and performing the calculations, the basic frequency and the seismic isolation performance of lead-rubber bearing base-isolated structure considering soft soil-structure interaction under earthquake excitations are analyzed. 通过建立有限元模型进行计算,详细研究了软土地基下铅芯橡胶支座基础隔震体系的基本频率和动力反应规律。
Influence of dynamic characteristics of lead-rubber bearing on seismic response of continuous beam bridge 铅芯橡胶支座动力特性对连续梁桥地震响应的影响
Study on bilinear model of lead-rubber isolating bearing 铅芯橡胶支座的双线型模型研究
Lead-rubber bearing is still an effective way for bridge isolation under near-fault earthquakes, but the harm curtailment is not adequate under exceptional pulse earthquake excitation, and parameter optimization is needed to cut short earthquake damage further more. 铅芯橡胶隔震支座在近场地震作用下仍然适用,但对于个别脉冲型强震记录效果不够明显,支座参数有必要进行优化。
In a word, lead-rubber bearings have more advantages than sliding bearings. 综合比较,铅芯橡胶支座比滑动支座有着更多的优势。
Lead-rubber bearings, which have advantages such as damping effect, safety performance, durability and applicability of economic, are adopted more and more in bridge seismic field. 橡胶铅芯支座因其减震效果、安全性能、经济耐久性和适用性的优点,在桥梁抗震领域越来越多的被采用。
Lead-rubber bearing ( LRB) has excellences such as simple structure, easily machining and installing, convenience and economy, which has excellent effect of seismic isolation on the high-speed railway bridge. 铅芯橡胶支座构造简单、加工安装容易,方便经济,对高速铁路桥梁具有良好的减隔震效果。