论文部分内容阅读
1.中小跨径的梁式桥或板式桥多采用板式橡胶支座,为避免在恒载作用下长期受剪,通常要求平置。《公路桥涵设计规范》(JTJ023—85)要求:“桥梁纵坡大于或等于1%时,应在支座表面与梁底之间采取措施,使支座平面仍保持水平”。当仅有纵向坡度时,不难采用图1或图2的措施进行处理。图1在梁底两端采用楔形垫板,以使橡胶支座平置。
1. Small and medium span beam bridge or plate bridge multi-plate rubber bearing, in order to avoid long-term shears under the action of constant load, usually require flat. The “Code for Design of Highway Bridges and Culverts” (JTJ023-85) requires that: “When the bridge longitudinal gradient is greater than or equal to 1%, measures should be taken between the bearing surface and the beam bottom to keep the plane of the bearing horizontal.” When only the vertical gradient, it is not difficult to use the measures in Figure 1 or Figure 2 for processing. Figure 1 at both ends of the beam using wedge plate, so that the rubber bearing flat.