摘要
道路设计时需满足最小净空和道路建筑限界的要求,枢纽立交由于复杂的层次关系在设计时很难统筹考虑。现有二维设计虽然能够保证立交工程各层的净空,但往往留有较大富余,造成资源的浪费。以某城市枢纽立交为例,利用Civil 3D中的三角网体积曲面方法,快速分析各空间交叉点的净空分布,将不满足最小净空要求或净空较大的路线纵断面进行优化调整,为合理的立交空间设计提供保证。
Road design must satisfy the minimum clearance and road construction boundary requirements,it’s difficult to make overall planning of the clearance due to the complex layers of hub interchange. Although the two-dimensional design can ensure the clearance of each layer,but certain surplus is often reserved,and resulting in a waste of resources. Take a hub interchange in a certain city for example,with the TIN volume surface method of Civil 3D,clearance distribution can be rapidly analyzed,and those which can’t satisfy the minimum clearance requirement or retain larger space should be made optimization adjustment in order to get a reasonable space design.
作者
梁颖慧
Liang Yinghui(Shanghai Urban Construction Vocational College, Shanghai 200438, China)
出处
《山西建筑》
2019年第3期131-134,共4页
Shanxi Architecture
关键词
BIM
净空
优化方法
BIM
clearance
optimization method
