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首页> 外文会议>Structural Engineers Association of California(SEAOC) Convention; 20050928-1001; San Diego,CA(US) >Inelastic Seismic Response of a Tilt-up Wall Building and Design Implications
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Inelastic Seismic Response of a Tilt-up Wall Building and Design Implications

机译：斜墙建筑的非弹性地震响应及其设计意义

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摘要

The effects on a tilt-up wall building of strong ground motions having pulse-type displacement characteristics are evaluated. The base shear demands of these ground motions clearly exceed the minimum code design requirements in both principal directions. A comparison of the forces in the connections and force contours in the walls and roof diaphragm with their estimated capacities indicate that the in-plane shear capacity of the walls is the only component to have sufficient capacity to remain elastic. The critical seismic force demand is the in-plane shear in the roof diaphragm. With these results, a nonlinear three-dimensional model of the building is developed within the constraints of the computer program (SAP2000). Nonlinear elements are incorporated for the connections of the glulam beams and purlins to pilasters and the nonlinear behavior of the diaphragm is modeled using a Hrennikoff model of the continuum. Inelastic characteristics for these components were obtained from the results of a limited number of component tests conducted at the University of California/Irvine. This modeling permitted consideration of both old and new connections to the pilasters along with the effects of dense nailing and sparse nailing in the diaphragm. Static push-over analyses and dynamic time history analyses were conducted. Results of these analyses indicate that nonlinear behavior can have a significant effect on the force and displacement demands of the different components. Modified connections along with the dense nailing in the diaphragm produce the best results, however, the displacement (ductility) demands may require additional strengthening of the critical roof diaphragm.
机译：评估了具有脉冲型位移特性的强地面运动对向上倾斜的墙壁建筑物的影响。这些地面运动的基本剪力要求明显超出了两个主要方向上的最低规范设计要求。将墙体和屋顶隔板的连接力和轮廓线与其估计的承载力进行比较，结果表明，壁的面内剪切承载力是唯一具有足够弹性的承载力。关键的地震力需求是屋顶隔板的平面内剪切力。利用这些结果，在计算机程序（SAP2000）的约束下开发了建筑物的非线性三维模型。包含了非线性元件，用于将胶合木梁和to条连接到壁架上，并使用连续体的Hrennikoff模型对膜片的非线性行为进行建模。这些组件的非弹性特征是从加利福尼亚大学/尔湾分校进行的有限数量的组件测试结果获得的。该模型允许考虑到壁柱的新旧连接，以及在膜片中的密集钉和稀疏钉的影响。进行了静态推覆分析和动态时程分析。这些分析的结果表明，非线性行为可以对不同组件的力和位移要求产生重大影响。修改后的连接以及隔板上的密集钉可产生最佳效果，但是，对位移（延性）的要求可能需要进一步加强关键的屋顶隔板。

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