SRC (steel reinforced concrete) system based inner-tube-free super high-rise building structure

Abstract

The invention relates to a building structure, in particular to an SRC (steel reinforced concrete) system based inner-tube-free super high-rise building structure. The SRC system based inner-tube-free super high-rise building structure comprises a plurality of first SRC columns, a plurality of SRC window spandrel beams, a plurality of second SRC columns, a plurality of second SRC beams and a plurality of layers of floor slabs, the first SRC columns and the SRC window spandrel beams are arranged on the periphery of the building structure and used for forming an outer frame tube structure, the second SRC columns and the second SRC beams are arranged inside the building structure and used for forming an inner frame structure, and the layers of floor slabs are used for connecting the outer frame tube structure with the inner frame structure. The building structure is simpler in structural design of connecting beams and the like, can adapt to more complex and irregular structures, and is more material saving and economical and particularly applicable to super high-rise buildings lower than 250 meters.

Description

technical field [0001] The invention relates to a building structure, in particular to a super high-rise building structure without an inner tube based on an SRC system. Background technique [0002] At present, the frame-core tube structure is widely used in super high-rise buildings in my country. The structure is composed of the core tube and the peripheral sparse column frame. The column spacing is generally 8m to 12m. The columns and surrounding beams form an outer frame, and the outer frame passes through the beams and floors. It is integrated with the central core tube. The functions in the core tube are mainly elevator rooms, stairwells, pipe wells and fire protection antechambers, and public toilets can also be placed in the core tube if necessary. [0003] Although the frame-core tube structure has many advantages and is widely used, it also has some disadvantages, such as: [0004] (1) The design of the coupling beam is difficult. The coupling beam in the frame-...

AI Technical Summary

Problems solved by technology

When the structure is subjected to horizontal forces, the coupling beams in the cylinder are subjected to a large force. In order to ensure the safety of the structure and prevent shear damage, the calculation of the reinforcement value of the coupling beams often exceeds the limit, which brings difficulties to the section design.

Moreover, in a frame-tube structure with a relatively complex plane (such as the eccentric setting of the core tube), the value of the cross-section of a certain connecting beam sometimes has a great impact on the dynamic characteristics of the entire structure, making multiple earthquakes such as period and displacement ratio Indicators Difficult to Meet Specification Requirements

Therefore, the design of coupling beams in frame-core tube structures with complex planes is often more difficult than the design of coupling beams in ordinary shear wall structures.

At the same time, as the most important lateral force-resisting component, the wall of the core tube often weakens the torsional performance of the structure due to the need to leave holes for door openings, fire hydrants and pipelines

[0005] (2) Poor economy

The anti-overturning moment arm of the core tube with a large height-to-width ratio (compared with the outer frame) is small. The only way to increase the anti-overturning moment of the core tube is to increase the self-weight and reduce openings, which will inevitably increase the amount of steel used. , increasing the construction cost

[0006] (3) The utility rate is not good, and the plane function layout is limited

In the traditional frame-core tube structure, the design of the core tube gives priority to the lateral force resistance of the structure, followed by the vertical traffic and equipment layout, so that there will be deviations in the core tube structure and functional design, such as the core tube There is no problem with the structural design of the tube, but the plane layout design in the core tube has ample or insufficient space. Since the structural design of the core tube involves the design of the entire building structure, it is very difficult and cumbersome to adjust

In order to avoid insufficient space for the core tube and increase the anti-overturning moment, the cross-sectional area of ​​the core tube is often designed to be relatively large, thereby reducing the practical rate of the building structure

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