Construction method of high pile cap tower crane foundation: Fid-Bau Portal

Construction method of high pile cap tower crane foundation

SONG LIANJIE / ZHANG HONG / ZHU LEI

The invention relates to the technical field of tower crane foundation construction, and provides a construction method of a high-rise pile cap tower crane foundation which comprises a steel platform and supporting piles arranged below the steel platform. The supporting piles comprise reinforced concrete cast-in-place piles and steel columns which are fixed to the tops of the reinforced concrete cast-in-place piles and extend upwards. The upper ends of the steel columns are fixedly connected with the steel platform; the construction method comprises the following steps: S1, prefabricating a steel platform and a steel column in a factory and transporting the steel platform and the steel column to a construction site; pouring holes are excavated in the construction site; manufacturing a reinforcement cage and welding the upper end of the reinforcement cage with the lower end of the steel column; s2, a reinforcement cage is hoisted into the pouring hole, and concrete is poured into the pouring hole to form a reinforced concrete pouring pile; and the steel platform is hoisted to the position above the steel columns and fixedly connected with the steel columns. The construction efficiency of the tower crane foundation is improved, the installation progress of the tower crane is advanced, and then the tower crane can be used for vertically transporting materials in advance.

本发明涉及塔吊基础施工技术领域，提供了一种高桩承台塔吊基础的施工方法，高桩承台塔吊基础包括钢平台和设置在钢平台下方的支撑桩；支撑桩包括钢筋混凝土灌注桩，以及固定在钢筋混凝土灌注桩顶部并向上延伸的钢柱；钢柱的上端与钢平台固定连接；该施工方法包括如下步骤：S1、在工厂预制钢平台和钢柱并运至施工现场；在施工现场开挖灌注孔；制作钢筋笼并将其上端与钢柱的下端焊接连接；S2、将钢筋笼吊至灌注孔中，并向灌注孔内灌注混凝土以形成钢筋混凝土灌注桩；将钢平台吊至钢柱的上方并与钢柱固定连接。本发明提高了塔吊基础的施工效率，促进了塔吊安装进度的提前，进而可提前利用塔吊对材料进行垂直运输。

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