温度变形和焊接收缩对钢结构施工的影响.doc

温度变形和焊接收缩对钢结构施工的影响 温度变形和焊接收缩对钢结构施工的影响提要：考虑温度变形和焊接收缩影响，屋面环梁、系杆施工时预留六个口先不安装，在卸载前安装，见下页所示 更多精品自报告 温度变形和焊接收缩对钢结构施工的影响 1温度变形和焊接收缩对屋面安装的影响 考虑温度变形和焊接收缩影响，屋面环梁、系杆施工时预留六个口先不安装，在卸载前安装，见下页所示。4根内圈环梁HL1-13在所有屋面所有静荷载施加完毕后，根据现场实际长度加工、安装。 2焊接收缩对主拱变形的影响 主拱分段对口时，对口间隙预留焊缝收缩对安装长度的影响，根据以往经验为3mm左右，具体尺寸待焊接模拟试验结果再定。 根据焊接收缩数据，主拱在地面整体组装时采取无余量组装，安装时也预留焊接收缩量就位。 3温差对主拱合拢的影响 主拱地面整体组装时的温度和合拢时的温度可能存在温差，如果温差过大，主拱长度方向将产生变形，从而导致合拢散装段无法正常安装。根据以往经验公式：△l=α*L*△T得出±10℃时，一半主拱的长度变形值约为24mm，在施工允许偏差范围内。 根据主拱施工期间对应的南京市多年气温统计变化曲线，取温度变化的中间值，设定主拱地面组装合拢后的检查温度为10℃，安装合拢段的温度设定在10±10℃范围内主拱可以正常合拢。 Measures for the routine management of moral education in Middle SchoolsMethod of conventional management of moral education in middle schoolFirst, the guiding ideology:School moral education is an organic whole of the whole education work, always adhere to the school adhere to the moral education, education for this product, and actively promote the quality education, the school building efficient curriculum system of moral education, moral education, improve the sense of attraction and appeal, enhance the moral education work for through and timeliness. Teach everyone, service education and management education, and school moral education work must be with family education and community education closely together, to form a concerted pattern, and strive to create a good atmosphere for education, and to promote the all-round development of students, to establish a scientific moral education full of vigor the For long-term mechanism.Two, the goal of moral education:To guide the students to form the correct world outlook, outlook on life, values, to cultivate students unity and mutual assistance, honest and trustworthy, law-abiding, good quality, hard work, set a good XX students ideological quality, psychological quality and image quality. The formation of excellent moral education curriculum system and management system, the construction of school. The society, family moral education n