Large-span prestressed double-slope concrete frame
A prestressing and concrete technology, applied in the direction of structural elements, roofs, building components, etc., can solve the problems of reducing the bearing capacity and performance of the frame, setting tension beams, increasing the force of the columns, etc., to meet the requirements of the structure, reduce the Cross-sectional size, the effect of reducing force
Active Publication Date: 2016-09-21
SHANDONG TRAFFIC PLANNING DESIGN INST
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Problems solved by technology
However, when the double-slope frame beam is stressed, an outward thrust will be generated at the bottom to act on the frame column. Due to the limitation of building height and use requirements, it is impossible to install a tension beam at the root of the frame beam, so the horizontal thrust is transmitted to the frame column, increasing The force of the column is reduced, and the bearing capacity and performance of the frame are reduced. This patent aims to solve the problem of this type of structure
Method used
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Embodiment 1
[0042] Construction of unbonded prestressed frame structure beams: construction of frame beam bottom formwork; laying and binding of non-prestressed steel bars and stirrups; laying of unbonded prestressed tendons, installation of end nodes; implicit inspection and acceptance; supporting frame beams Beam side formwork; pouring and ramming concrete to make trapezoidal frame beams; concrete curing; installing prestressed tendon anchors at the ends of beams, using prestressing jacks for tensioning and anchoring, and sealing anchors with concrete at the anchorage ends.
Embodiment 2
[0044] Construction of bonded prestressed frame structure beams: building frame beam bottom formwork; binding or welding non-prestressed longitudinal steel bars and stirrups; installing metal bellows; processing and threading of prestressed tendons; acceptance of concealed works; Pouring concrete and curing; tensioning, anchoring; corrugated pipe filling material; anchoring end with concrete sealing.
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The invention relates to a large-span prestressed double-slope concrete frame which comprises two frame columns and a trapezoidal frame beam. The trapezoidal frame beam comprises two frame beam slope segments, a frame beam horizontal segment and frame beam salient points, and the frame beam slope segments are located at the two ends of the frame beam horizontal segment; the frame columns are symmetrically located on the lower portions of the frame beam slope segments and vertically arranged; frame column longitudinal bars and frame column stirrups are arranged inside each frame column, longitudinal bars and stirrups are arranged in the trapezoidal frame beam, and three prestressed bars are arranged in the trapezoidal frame beam; the prestressed bars are anchored on the outer side of the frame beam through prestressed bar sealing anchoring devices. According to the large-span prestressed double-slope concrete frame, the prestressed bars are arranged in the trapezoidal frame beam, thrust caused by sloping of the trapezoidal frame beam can be resisted, stress of the columns is reduced, the bearing capacity and usability of the frame are enhanced, and therefore the cross-section size of the large-span frame beam is reduced, and the requirement of building design on the structure is better met.
Description
technical field [0001] The invention relates to the technical field of prestressed concrete frame beams, in particular to a large-span prestressed double-slope concrete frame. Background technique [0002] The development of society and economy has led to the huge development of the construction industry. Modern buildings have diversified in terms of scale, facade effects, and structural forms, and have higher requirements for functions and comfort. In many public buildings, in order to meet the needs of use functions, there are many large-space architectural patterns, but in order to meet the needs of architectural styles, there are also sloping roof structures, thus forming a large-span broken-line concrete frame. This type of structure exists in complex buildings in expressway service areas, long-distance passenger stations, railway passenger stations, long-span warehouses, factories, and subway stations. [0003] The structural form of the long-span double-slope concret...
Claims
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IPC IPC(8): E04B1/342E04B7/02E04C3/44E04C5/12E04C5/08
CPCE04B1/342E04B7/02E04C3/44E04C5/08E04C5/12
Inventor 苑辉高峰刘静张至辉张金香
Owner SHANDONG TRAFFIC PLANNING DESIGN INST