Semi-prefabricated underground continuous wall and construction method thereof

An underground continuous wall and prefabricated wall technology, applied in excavation, sheet pile wall, infrastructure engineering and other directions, can solve problems such as groundwater leakage, meet the requirements of reducing hoisting equipment, easy to ensure construction quality, and avoid groundwater leakage. Effect

CN104895093AActive Publication Date: 2015-09-09SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-09-09

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Abstract

The invention discloses a semi-prefabricated underground continuous wall and a construction method thereof. The continuous wall comprises a lower prefabricated wall and an upper post-poured wall. The lower prefabricated wall comprises a plurality of prefabricated wall sections; a connecting rib is arranged at the tops of the prefabricated wall sections; the adjacent prefabricated wall sections are connected by use of a steel pipe joint, and a plurality of through holes are formed in the wall, connected with the prefabricated sections, of the steel pipe joint. The upper post-poured wall is a cast-in-place reinforced concrete structure; a spiral stirrup is vertically arranged in the middle of the reinforcement cage of the upper post-poured wall; the part, exceeding the prefabricated wall sections, of the steel joint is arranged in the spiral stirrup; the reinforcement cage is connected and fixed with the connecting rib. The semi-prefabricated underground continuous wall is integrated with the advantages of the cast-in-place underground continuous wall and the prefabricated underground continuous wall, and the easily occurring defects of the cast-in-place underground continuous wall and the prefabricated underground continuous wall can be avoided reasonably. The lower part of each wall section is the prefabricated wall section, and therefore, the construction difficulty of the continuous wall is greatly reduced and the construction quality of the continuous wall is easy to guarantee.
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Description

technical field

[0001] The invention relates to the field of design and construction of an underground diaphragm wall in building foundation pit engineering, in particular to a semi-prefabricated underground diaphragm wall and a construction method for the underground diaphragm wall. Background technique

[0002] The underground diaphragm wall construction technology originated in Europe. In 1938, Italy developed a construction method for constructing an underground diaphragm wall in a mud support deep groove. In 1950, it was the first to use deep mud tanks to build underground diaphragm walls in Italy. In the 1950s and 1960s, this technology was promoted in western developed countries, the former Soviet Union and Japan. In 1958, my country used this technology to build a dam cut-off wall. In the mid-1970s, this technology was applied to construction, coal mines and municipal industries. Due to its high rigidity, the underground diaphragm wall has the advantage of having l...

Examples

Embodiment Construction

[0027] The present invention will be further explained below in conjunction with the accompanying drawings.

[0028] Such as figure 1 As shown, a semi-prefabricated underground continuous wall includes a lower prefabricated wall 2 and an upper post-cast wall 1 . The lower prefabricated wall 2 includes several prefabricated wall sections, and the top of the prefabricated wall section is provided with connecting ribs 4, and the adjacent prefabricated wall sections are connected by steel pipe joints 3, such as figure 2 shown. The length of the steel pipe joint 3 is equal to the overall height of the semi-prefabricated underground diaphragm wall. A number of through holes 31 are preset on the pipe wall connecting the steel pipe joint 3 and the prefabricated wall section. The overall length of the steel pipe joint 3 with the through holes 31 is equal to the The height of the section; in order to ensure that the poured concrete flows smoothly into the steel pipe hole, the through...