A kind of steel-cement mixing pile inner support structure and support method thereof

Abstract

The invention relates to a section steel cement soil mixing pile internal supporting structure. A section steel cement soil mixing pile comprises a cement soil mixing pile, wherein internal plugging steel is arranged in the cement soil mixing pile, the section steel cement soil mixing pile is provided with a top ring beam and a steel enclosing purlin, and the section steel cement soil mixing pile internal supporting structure is characterized in that the top ring beam and the steel enclosing purlin are respectively provided with a supporting box, the supporting box is connected with a batten plate through a steel stranded wire, and the batten plate is welded with two adjacent internal plugging steel. The supporting box is used for substituting the support or an anchor rod, and the supporting box is connected with the batten plate through the steel stranded wire, so that the water and soil pressure is indirectly transferred into the internal plugging steel. The supporting structure and the supporting method have the advantages that the construction operation space in a foundation pit can be increased, and not only can the project amount of the internal support be greatly reduced, but also the construction period can be shortened.

Description

technical field [0001] The invention relates to an inner supporting structure of a shaped steel cement-soil mixing pile enclosure, in particular to an inner supporting structure of a shaped steel cement-soil mixing pile and a supporting method thereof. Background technique [0002] At present, the support of the enclosure structure of steel cement-soil mixing pile usually adopts the following two forms: 1. support (concrete support or steel support, the same below); 2. anchor rod. [0003] The above two forms mainly have the following problems: 1. When using support, it is only applicable to the situation that the engineering geology and hydrogeology on both sides of the foundation pit are not very different. When there are large differences in engineering geology and hydrogeology on both sides, it will lead to a large difference in water and earth pressure, and the horizontal displacement of the support will seriously threaten the safety of the foundation pit. 2. When supp...

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Problems solved by technology

[0003] The above two forms mainly have the following problems: 1. When using support, it is only suitable for the situation where the engineering geology and hydrogeology on both sides of the foundation pit are not much different.

When the engineering geology and hydrogeology on both sides are quite different, it will lead to a large difference in water and soil pressure, and the horizontal displacement of the support will seriously threaten the safety of the foundation pit.

2. When supports are used, the horizontal and vertical spacing of the supports is usually relatively close, and the construction space is limited, thereby increasing the construction period

3. When bolts are used, they cannot provide sufficient pull-out resistance for areas with weaker geology; even if they can provide sufficient pull-out resistance in areas with better geology, they cannot be used due to factors that do not allow the surrounding environment or exceed the red line of the land. implement

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