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| 1 | 空间弯扭钢桥数字化建造关键技术分析显示文摘随着城市建设的高质量发展,桥梁作为城市交通的重要元素,其外观设计更加现代化,尤其是造型美观的空间弯扭钢结构桥梁备受青睐,这对复杂桥梁的设计、加工制造和精益建造提出了更高的标准要求与技术挑战。本文以全球首例弯扭钢塔斜拉钢构体系桥——新首钢大桥的全数字化建造为研究对象,通过对数字化设计、绿色智能建造及精密测控关键技术的系统研究和应用,实现了基于“骨架+模板”的非一致倾斜空间扭转钢塔节段与变截面高腹板主梁精细化、参数化协同设计,并通过可调参数、虚拟预拼装及三维激光扫描等技术保障了桥梁各构件的高精度制造与钢塔节段的高精度无应力架设。 | 李久林 徐浩 何辉斌 刘廷勇 李强强 | 2022 | 测绘通报2022，，9： | 1 |
| 2 | Virtual pre-assembly for large steel structures based on BIM, PLP algorithm, and 3D measurement显示文摘The current physical pre-assembly method of large steel structures is time consuming and costly and requires large sites. Thus, the pre-assembly of large steel structures in a virtual way, starting from building information modeling (BIM), is an interesting alternative to the physical one. In this study, an innovative method for virtual pre-assembly is proposed on the basis of BIM, plane-line-point algorithm, and 3D measurement. This method determines the optimal analytical least squares of the various built components. The technique verifies the feasibility of the steel structure assembly and the fulfillment of the design geometries, starting from the real data obtained by an accurate metric survey of the fabricated steel elements. The method is applied to a real case, and obtained results largely satisfy the prefixed research objectives. Suggestions to improve the proposed method are also discussed. | Ying ZHOU Wan WANG Hanbin LUO Yan ZHANG | 2019 | Frontiers of Engineering Management2019，6，2： | 0 |
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