External prestressed tendon structure, prestressed concrete ring foundation and its construction method
An external prestressing and concrete technology, which is applied in basic structural engineering, building construction, processing of building materials, etc., to achieve the effect of preventing damage and reducing the size of the foundation and the amount of materials used
Active Publication Date: 2022-03-29
SINOMA OVERSEAS DEVELOPMENT CO LTD
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Problems solved by technology
For the ring foundation buried in the soil, due to the above-mentioned problems of the external prestressed tendons, there are few reports on the application of the external prestressed tendons in the ring foundation in the soil.
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[0043]The existing external prestressed tendons, especially the external prestressed tendons used in the concrete foundation buried in the soil are exposed in the soil, and are easily damaged by moisture and corrosive components in the soil, which affects the strength and strength of the prestressed tendons. durability. In order to solve the above problems, the present invention provides an external prestressed tendon structure, a prestressed concrete ring foundation and a construction method thereof. The waterproof and anti-corrosion filling layer between the core and the inner sheath and the outer casing set on the outer periphery of the inner sheath, during the backfilling process and during the use of the concrete ring foundation, the outer casing also prevents soil The pressure, moisture and corrosive components in the soil are easy to cause damage to the external prestressed tendons and their inner sheaths; the construction method of segmented construction, post-tensioni...
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The invention provides an external prestressed tendon structure, a prestressed concrete circular foundation and a construction method thereof. The external prestressed tendon structure is provided with a three-layer protective structure: an inner sheath set on the outer periphery of the inner core, an inner sheath located between the inner core and the inner layer The waterproof and anti-corrosion filling layer between the sheaths and the outer casing set on the outer periphery of the inner sheath, the two ends of the inner sheath are symmetrically embedded in the foundation body of the concrete ring foundation, and the outer casing is flexibly connected On the inner side of the main body, the inner core is symmetrically anchored on the outer periphery of the basic main body. The invention adopts the external prestressed tendon structure to prestress and post-tension the concrete ring foundation buried in the soil, which greatly reduces the foundation size and material consumption; the outer casing prevents soil pressure, moisture and corrosion in the soil Reactive components are easy to cause damage to the external prestressed tendons and their inner sheaths; the construction method of segmented construction, post-tensioning, and final filling of slurry is adopted to simplify construction operations and ensure construction quality.
Description
technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to an external prestressed tendon structure, a prestressed concrete ring foundation and a construction method thereof. Background technique [0002] The annular foundation buried in the soil is mainly responsible for the pullout and compression resistance of the larger foundation surface around the annular foundation and the side friction resistance of the surrounding soil. It effectively utilizes the structural properties of the soil itself, and changes the form of the gravity foundation that independently offsets the load on the upper part of the ring foundation to the overall effect of the foundation plus the soil itself. In order to meet the huge bending moment load transmitted from the upper part of the foundation to the foundation, the existing circular foundation usually adopts the method of increasing the foundation area, volume or deeper buried ...
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IPC IPC(8): E02D27/00E04G21/12
CPCE02D27/00E04G21/121
Inventor 于淼洪金彪宫素敏衣冰徐世凯王世恒王跃威
Owner SINOMA OVERSEAS DEVELOPMENT CO LTD