现代木结构建筑建造技术 第十五章 桁架 第十五章 桁架.ppt

冲压-10吨滚压能力 桁架制作 均匀预嵌并压制平齐 桁架制作 用锤钉齿板 桁架制作 齿板质量不过关！ 削弱了齿板的强度和支撑连接力 导致构件出现缝隙 桁架制作 找出桁架位置 找出桁架位置 找出桁架位置 找出桁架位置 找出桁架位置 从这边量出桁架的位置 从这边量出桁架的位置 找出桁架位置 尺寸测量从外墙体最边处开始 找出桁架位置 根据桁架布置图标出每一根桁架所在的位置 C1 标出桁架位置 找出桁架位置 桁架安装 山墙斜撑 桁架安装 1. 竖起的山墙桁架 2. 竖起的梁式桁架 3. (insert Chinese) 要点 Key Points: 先将山墙桁架放到位，然后牢固的支撑住，防止它们移动。注意支撑不要妨碍旁边桁架的安装。Gable trusses are put into place first, then firmly braced so they can`t move. Braces must not interfere with adjacent trusses. 紧接着放上梁式桁架（数片桁架连接在一起）。梁式桁架一般靠近屋面端部以及屋面交叉位置。Girder trusses (several trusses nailed together) are put into place next. These are generally found near hip roof ends and at roof intersections 位置2需要使用梁式桁架支撑通用桁架。The girder at point 2 is necessary for supporting the common trusses 要点 Key Points: 桁架需要固定在外墙上，每端使用三颗钉子。Trusses should be fastened to the exterior wall with 3 nails at each end 选用80毫米的钉子，一侧使用一颗，另外一侧使用两颗。One 80mm nail is fastened from one side of the truss, two 80mm nails are fastened from the other side 以30度角钉入钉子，钉子长度的2/3需要顶入下面的梁板里。Nails should be installed at a 30 degree angle, with 2/3 of the nail going into the plate below 要点 Key Points: 临时支撑固定在桁架的顶部，保证桁架安装过程中不会移位。Temporary braces are fastened to the top of the trusses to hold them in place as they are installed 将桁架固定到墙上之前，需要拉一根细绳，确认桁架的尾部都在正确的位置。A string should be used to make sure the ends of the trusses are all in correct position before nailing to the wall 确认每片桁架都到位以后，每片桁架的每一端使用三颗钉子固定在墙上，和临时支撑使用两颗钉子固定。As each truss is set in place, it should be fastened to the exterior walls with 3 nails on each end, and to the temporary brace with 2 nails 其他 Additional Comments: 桁架不和内墙非承重墙紧密地固定在一起是做好的做法，非但如此，建议使用特殊的连接件保证桁架有移动的空间。It is best if trusses are not fastened securely to interior non load bearing walls. Instead, the use of special fasteners which allow movement is preferred 一般使用2x4规格材做临时支撑，桁架每边使用一根支撑。如果桁架特别大，需要使用过个支撑。Temporary braces are generally 2x4, one piece is placed on each side of the truss. For very large trusses, it may be necessary to hav