Novel dual-hollow superimposed structural member
A new type of technology for structural components, applied in the field of new double-space composite structural components, can solve the problems of self-weight of concrete components, concrete quality control, etc., and achieve the effects of improving shear resistance and seismic performance, increasing service life, and shortening construction period.
Inactive Publication Date: 2011-07-27
TSINGHUA UNIV
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Problems solved by technology
[0003] The purpose of this invention is to solve the problems of excessive self-weight of concrete components in large public buildings and long-span bridges and the control of concrete quality during construction, and provides a new type of double-empty composite structural component
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Embodiment Construction
[0016] The present invention provides a novel double-empty laminated structural member, which will be further described below in conjunction with the accompanying drawings and specific implementation methods.
[0017] Such as figure 1 or figure 2 As shown, first set 4-10 (preferably 8 or 6) circular hollow interlayer concrete-filled steel tube concrete 1 as the stiff skeleton to bear the initial construction load of the structure, and then tie steel bars (including longitudinal steel bar 4 , tie bars 5 and stirrups 6), install the inner steel pipe 2 and the outer formwork, and pour the outsourcing concrete 3 in the range between the inner steel pipe 2 and the outer boundary delineated by the outer formwork to form a box-shaped section member to ensure that different materials able to coordinate their work.
[0018] The inner and outer circular steel pipes and the inner steel pipe 6 in the hollow interlayer concrete filled steel pipe 1 are structural steel pipes formed by we...
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The invention belongs to the field of engineering structures and particularly relates to a novel dual-hollow superimposed combined member, a plurality of bars of circular hollow sandwich layer steel pipe concrete are taken as a stiff framework for firstly bearing initial construction load of the structure, steel bars are bound on the periphery of the hollow sandwich layer steel pipe concrete, internal steel pipes are mounted, and concrete is further superimposed and poured, thereby forming the member in the box-shaped cross section by combination. The dual-hollow superimposed combined member can solve the problems of excessive dead weight of the concrete in large public buildings and long-span bridges and quality control of the concrete during the construction. In addition, due to the adoption of the dual-hollow structural form, the shearing resistance and the seismic performance of the structure can be greatly improved. In addition, the hollow sandwich layer steel pipe concrete in the structure can further bear the initial construction load of the structure, and the internal steel pipes can also be used as internal templates during the construction of the concrete, thereby not only facilitating the construction, but also achieving the purpose of shortening the construction period.
Description
technical field [0001] The invention belongs to the field of engineering structures, and in particular relates to a novel double-empty superimposed structural member. Background technique [0002] Beams or columns of long-span structures require a large section flexural stiffness to resist horizontal loads such as wind loads and earthquake loads. If the section size is blindly enlarged to increase stiffness, the self-weight of the concrete may crush the beam or column; in addition, Creep, shrinkage and heat of hydration in the cement hydration stage are prominent in mass concrete, which will have many adverse effects on the structure. Contents of the invention [0003] The purpose of the invention is to solve the problems of excessive self-weight of concrete components in large-scale public buildings and long-span bridges and the control of concrete quality during construction, and provides a novel double-empty composite structural component. [0004] The technical scheme...
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IPC IPC(8): E04C3/00E01D19/00
Inventor 于清李永进
Owner TSINGHUA UNIV