公路工程

以广西某高速公路枢纽互通D匝道渐变段加宽为研究对象，通过现场调查、钻孔勘察和计算分析等方法，考虑自然、复杂地形条件、施工安全性、施工期交通组织、工程造价等因素，对挡墙拼宽、桥梁拼宽及泡沫轻质土拼宽等3种设计方案进行比选，得出泡沫轻质土拼宽设计方案具有一定可行性和优越性，实施效果良好，可为类似工程方案设计、施工提供参考。

This paper aims to study the widening transition on section at D ramp of interconnecting on a typical Highway in Guangxi, by means of field investigation, borehole surveying and calculation analysis and other methods. Considering natural, complex terrain conditions, construction safety, construction period traffic organization, engineering cost and other factors. The three design schemes of retaining wall width, bridge width and foam lightweight concrete width has been comprehensively compared and selected. Foamed lightweight soil has certain feasibility and advantages in this area, and the implementation effect is good, which can provide reference for the design and construction of similar projects.