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灌注桩施工技术是目前大多数施工单位都会采用的一种地基施工技术,随着建筑施工结构对稳定性要求日益提高,灌注桩施工技术也在不断发展。沉管夯扩灌注桩技术就是由灌注桩技术演变而来,该种施工技术是将内外管同时下入地基土层结构之中,并通过对内灌注混凝土桩柱的基部进行夯实作业,使其底端混凝土形成扩大的形状,然后再进行上层混凝土浇筑并将内外管拔出的施工方法。这种施工技术适用于粘度较低的地基基层或岩层,能够有效提高地基桩基础结构的承载力和稳定性,具有较为广泛的应用前景。文章以一项实际工程为例对沉管夯扩灌注桩施工技术进行了详细介绍,以进一步扩大其施工应用价值。
The construction technology of bored pile is a kind of foundation construction technology that most construction units will adopt at present. As the requirements for stability of building construction are increasing day by day, the construction technology of bored pile is also developing continuously. Immersed pipe rammed filling piles technology is evolved from the bored piles technology, the construction technology is the same time, inside and outside the pipe into the subsoil soil structure, and by pouring concrete piles at the base of the compaction operation, so that The bottom of the concrete to form an enlarged shape, and then the upper concrete pouring and drawing out the inner and outer pipe construction methods. This kind of construction technology is suitable for the foundation layer or rock layer with low viscosity and can effectively improve the bearing capacity and stability of the foundation pile foundation structure and has a wide range of application prospects. Taking a practical project as an example, the article introduces in detail the construction technology of sinking and expanding grouting pile to further expand its application value.