A Splicing Method for Vertical Connection of Prefabricated Underground Diaphragm Wall
A technology of underground continuous wall and ground-connected wall, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve the problems of concrete flow around, groove wall collapse, etc., to increase bearing capacity and strength, reduce water seepage, The effect of shortening the construction period
Active Publication Date: 2020-08-04
上海城市交通设计院有限公司
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Problems solved by technology
In the conventional construction method of pouring underground diaphragm walls on site at present, the construction joints adopt locking pipe joints, which can easily cause the tank wall to collapse when the groove is formed, and the phenomenon of bypass flow is also likely to occur when the concrete is poured.
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[0025] The following combination Figure 1 to Figure 5 , the present invention will be further elaborated by specifying a preferred specific embodiment.
[0026] The splicing method for the vertical connection of the prefabricated underground diaphragm wall provided by the present invention is used for the splicing of the underground diaphragm wall as foundation pit enclosure and basement exterior wall, comprising the following steps:
[0027] S1, such as image 3 As shown, the first prefabricated underground continuous wall 10 is made, and a first gap is opened inside one end of the first prefabricated underground continuous wall 10 to form a first knife handle structure 11 outside the end of the first prefabricated underground continuous wall 10. I-beam 12 is pre-embedded in a gap;
[0028] S2, such as image 3 As shown, the second prefabricated underground continuous wall 20 is made, and a second gap is opened on the inside of one end thereof, so that the second knife ha...
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The invention discloses a vertical connection splicing method of a prefabricated underground diaphragm wall. The vertical connection splicing method comprises the steps that S1, a first prefabricated underground diaphragm wall is manufactured, first notches are formed in the inner side of the end part of one end of the first prefabricated underground diaphragm wall so as to allow a first tool holder structure to be formed at the outer side of the end part, and I-steel is embedded into the first notches; S2, a second prefabricated underground diaphragm wall is manufactured, second notches are formed in the inner side of the end part of one end of the second prefabricated underground diaphragm wall so as to allow a second tool holder structure to be formed at the outer side of the end part, and steel plates are embedded into the second notches; S3, a first groove section is dug in the top of a basement, and a second groove section is dug in the bottom of the basement; S4, the first prefabricated underground diaphragm wall is hoisted into the first groove section, the second prefabricated underground diaphragm wall is put in the second groove section, the first tool holder structure is aligned to and contacted with the second tool holder structure, and the first notches are aligned to the second notches; and S5, the I-steel is in welded connection with the steel plates, and concrete is poured into the first notches and the second notches. With the adoption of the vertical connection splicing method, the carrying capacity and strength of a splicing connection part can be improved effectively, the water permeability of the splicing connection part is reduced, the construction quality is ensured, and the construction period is shortened.
Description
technical field [0001] The invention relates to a splicing method for prefabricated walls, in particular to a splicing method for vertical connection of prefabricated underground continuous walls, especially suitable for vertical splicing when prefabricated underground continuous walls are used as foundation pit enclosure and basement exterior walls . Background technique [0002] In the prior art, the construction method of the underground diaphragm wall is mainly based on pouring on site, while the use of prefabricated underground diaphragm walls is very little. In the conventional construction method of pouring underground diaphragm walls on site at present, the construction joints adopt locking pipe joints, which can easily cause the collapse of the groove wall when the groove is formed, and the flow around phenomenon is also easy to occur when the concrete is poured. Therefore, there is an urgent need to propose a novel construction method for underground diaphragm wal...
Claims
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IPC IPC(8): E02D5/20
CPCE02D5/20
Inventor 胡坚尉杨龙
Owner 上海城市交通设计院有限公司