A kind of annular anchor cable type prestressed concrete shell structure and construction method

A concrete and prestressed technology, applied in special structures, building components, building structures, etc., can solve problems such as casualties, internal pressure liquid and gas leakage, etc., to facilitate efficient construction, improve stress conditions, and improve resistance Effect of external load capacity

CN109837990BActive Publication Date: 2020-06-19CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-06-19

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Abstract

The invention discloses an annular anchor cable type prestressed concrete barrel vault shell structure and a construction method. A prestressed barrel vault shell structure comprises a prestressed annular anchor cable beam, a concrete barrel vault shell, a swimming anchor head, a sealing backing plate, a steel clamp plate, an anchor cable clamp sheet, a rubber waterstop seam and a reserved groove,wherein prestress anchor cables consist of a circular ring line anchor cable, an asymptotic line anchor rope and a flat straight line anchor cable, start from the anchoring end of the swimming anchorhead to be parallel to the outer edge of the barrel vault shell structure at equal intervals, are tensioned after the encircling for 360 degrees, and are locked at the tensioning end of the swimminganchor head. The construction method comprises the steps of anchor cable positioning and installation, reserved groove manufacturing, prestressed barrel vault shell casting and anticorrosion sealing treatment. The prestressed barrel vault shell structure can be applied to nuclear reactor containments, egg-shaped sewage digesters, pressure pipelines and large-size barns, can ensure the structure cracking avoidance under the inside and outside load or accidental collision conditions, and can prevent pressed air, gas and radioactive substances from escaping.
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Description

technical field

[0001] The invention relates to the field of structural engineering, in particular to a prestressed concrete shell structure and a construction method suitable for buildings with large cross-sectional spaces such as nuclear reactor containment shells, egg-shaped sewage digesters, pressure pipes, and large granaries. Background technique

[0002] Buildings with large cross-sections (such as nuclear reactor containment, egg-shaped sewage digesters, pressure pipes, and large granaries) have special functions and are often large in size. Their structural design is one of the most difficult points in the engineering field. The shell structure can make full use of the strength of the material and at the same time combine the two functions of load-bearing and enclosure, so it is often used. Due to the difficulty of welding when steel plates are used for large-section structures, and the lack of durability due to anti-corrosion problems, reinforced concrete materials...

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Embodiment Construction

[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. It should be understood that the embodiments described below are only a part of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained without making creative efforts belong to the protection scope of the present invention.

[0026] Such as Figure 1-Figure 7 As shown, a ring-shaped anchor cable type prestressed concrete shell structure of the present invention includes a prestressed ring anchor cable bundle 1, a concrete shell 2, a floating anchor head 3, a sealing backing plate 4, and a steel splint 5, Anchor cable clip 6, rubber waterstop 7, reserved groove 8, circular anchor cable 9, progressive anchor cable 10, flat straight anchor cable 11, 12-swimming anchor head anchoring end, 13-swimming anchor Head tension end, 14-extended ...