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In-plane cyclic behavior of structural insulated panel wood walls including slit steel connectors

机译：包括开缝钢连接器的结构绝缘板木墙的面内循环特性

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摘要

The objective of this paper was to experimentally investigate the behavior of structural insulated panel (SIP) walls under in-plane cyclic loading and to test several panel-to-panel connections in order to measure their effect on the behavior of the walls. Each wall was constructed using two SIP panels with one top plate, one sill plate, two end plates, and a panel-to-panel connection. Each SIP panel had a 5.5 in. (14 cm) thick expanded polystyrene core sandwiched between two 4' x 8' (1.22 m x 2.44 m) sheets of 7/16 '' (1.11 cm) oriented strand board. The top sill plates were split up between each panel in an effort to increase the potential for racking behavior of the walls and, therefore, the relative vertical displacement between the panels. In addition, as a preliminary study, three different steel connector configurations utilizing 26 gauge steel shear panels were considered in an effort to introduce additional ductility compared to more traditional block spline connection. From experimental observation of the wall with the block spline connection and the wall with no connection, the panel-to-panel connection was shown to contribute significant strength and stiffness to the wall system. The walls that were constructed with the first two configurations of the shear panels did not show any significant increase in either stiffness or ductility over the wall with the block spline. These walls also showed a decline in peak strength, which occurred at lower lateral displacements than the peak strength of the typical wall. For both of these cases, the shear panels yielded early and ruptured at the lateral deformation which caused peak load in each wall. The SIP wall implementing the third style of shear panel also did not demonstrate a significant increase in ductility as compared to the standard SIP wall. Despite the initially outlined potential, the preliminary study of implementation of the slit steel shear panels considered in this study did not significantly alter the performance of the conventionally connected SIP walls. Further study with stiff connectors capable of significant ductility prior to fracture would need to be implemented to realize the benefits of increased wall ductility.
机译：本文的目的是通过实验研究结构内绝缘面板（SIP）墙在平面内循环荷载下的行为，并测试几种面板到面板的连接，以测量它们对墙的行为的影响。每面墙都是使用两个SIP面板构造的，其中一个顶板，一个门槛板，两个端板以及面板到面板连接。每个SIP面板具有5.5英寸（14厘米）厚的膨胀聚苯乙烯芯，夹在两张7/16英寸（1.11厘米）定向刨花板的4'x 8'（1.22 m x 2.44 m）片之间。在每个面板之间将顶部门槛板分开，以增加可能的墙壁搁置行为，从而增加面板之间的相对垂直位移。此外，作为一项初步研究，考虑了使用26号钢剪切板的三种不同的钢连接器配置，以期与传统的整体花键连接相比，具有更大的延展性。从对带有花键样条连接的墙和没有连接的墙的实验观察中，可以看到面板到面板的连接对墙系统具有显着的强度和刚度。用前两种构型的剪力墙构造的墙在刚性或延展性方面均未显示出带有花键花键的墙。这些墙还显示出峰值强度的下降，这是在比典型墙的峰值强度低的横向位移处发生的。对于这两种情况，剪力板都早屈服并在横向变形处破裂，从而在每面墙中引起峰值载荷。与标准SIP墙相比，实施第三种剪力板的SIP墙也未显示出延展性的显着提高。尽管初步概述了潜力，但这项研究中考虑的缝钢剪力板实施的初步研究并没有显着改变常规连接的SIP墙的性能。为了实现增加壁的延展性的益处，需要对具有在断裂之前具有显着延展性的刚性连接器进行进一步的研究。

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