Welcome to free paper download website

Economic other

You are here: Home > Economics > Economic other > content

Small high-rise type of building structure design

Author: ZhouXiaoLi From: www.yourpaper.net Posted: 2010-07-08 12:45:30 Read:
Abstract: In this paper, through an engineering example to the more common of the structural system of the small high-rise residential applicability, economy, seismic performance aspects of the comparison, and discusses the advantages and disadvantages of the various structural types, for engineering peers and owners Selection to provide some reference.
Key words high-rise residential; applicability; economy; seismic performance

The structural design of the small high-rise residential, during the selection of the structure as a structural designer, not only to consider the applicability of the structural system and economy, but also give full consideration to the seismic performance aspects. This article is an example of a cell, the currently widely used form of several structures were analyzed and compared.

A structure of the program Overview

The 12th floor of a cell, a ladder, two two-unit residential, symmetrical structure, the height of 2.90m, the total building height of 34.80m, 34.20m long, wide 14.70M, each floor area of ??490m2, with a total area of ??880m2, seismic intensity of 6 degrees, site classification into three categories, basic wind pressure: 0.60kn / m, using three-dimensional analysis of multi-storey and high-rise building structure design software program and the relevant norms of different structural design calculation and analysis to compare.

(A) frame structure
This program features a multi-layer structure is generally used for small high-rise structure, applicable height range is generally less than 60.0m (minimum security). The frame structure is flexible layout, with a large interior space, more convenient to use. The infill walls lightweight partition can be used to reduce structural weight. But within the framework of the convex column directly affects the size of the actual use of space and furnishings.

(B) shaped column frame
This structural system is a derived structure of the frame structure, in addition to its frame structure characteristics, and the wall width shaped columns a good solution to the construction plane problem. According to the industry standard "concrete special-shaped column structures of order JGJ149-2006 3.1.2 seismic design is 6 degrees, shaped column structure for housing a maximum height of 24 m, the construction and a total height of 34.8 0m. It is not appropriate to adopt special-shaped column frame structure.

(C) frame shear wall structure
This structural system is generally used for high-level structure, widely used in recent years, high-level structural design, the characteristics of this program is the use of floor elevator between a reinforced concrete core wall to resist most of the horizontal load frame column vertical loads. This model has a frame structure flexible layout, easy-to-use features, but also has greater stiffness and strong seismic capacity. But within the framework of the convex column also affect the actual area of ??the apartment and furnishings.

(4) special-shaped columns frame shear wall structure
This structural system is a descendant of the frame-shear wall structure, this program is characterized by the use of floor elevators do reinforced concrete core wall to resist most of the horizontal load, shaped column vertical loads, horizontal displacement and interlayer displacement greatly decreases. At the same time, the special-shaped columns and the wall the same width and can better address the construction plane.

(E) the ordinary shear wall structure
This structural system is generally used for high-level structure housing, in particular, is widely used in the design of high-rise residential structure layer 30. This program features are set in accordance with the layout of the building reinforced concrete walls, shear walls and wall width is a good solution to the building plan.
The total height of only 34.8m, seismic intensity of 6 degrees, If pure shear wall structure, high cost, it is not as the first choice of structure type.

(F) short shear wall structure
This program features special shear wall structure is formed to meet the construction requirements, in accordance with the layout of the building, the corner of the building bump a variety of line-furnished short pier, the main forms: a type, Y-, type, T type, z, Y type. A result of using this structural system, the central elevator, stairwell and tube wells around the shear wall tube structure, arranged around the short shear wall can also be arranged according to the needs of some of the long pier wall, so the structural arrangement extremely flexible, basically vertical force components are arranged according to the requirements of the building.

Comparison of the two seismic performance

(A) frame structure
Generally used for multi-storey and high-rise structure, ie 10 layers or building height H is less than 28.0m, H big 30.0m frame structure, seismic intensity of 6 degrees region, "high regulation" 4.8. under two, the seismic level three. SATWE program calculates the results show that the role of this structure in the horizontal loads (wind loads and seismic loads), the displacement of the maximum horizontal displacement and inter-layer (1/1200); frame column as the only anti horizontal force component, the axial compression ratio limit of 0.90, the the frame column cross-sectional dimension within the framework of convex column directly affect the size of the actual use of space and furnishings. Moreover, it is the most serious due to the construction of the plane or facade shape requirements, often framework resting on one end of the column and the other end resting on the beam; or a few frame columns is not on an axis, are often single cross-frame phenomenon, seismic weak link. So, consider the requirements for seismic resistance of the structure, due to the small frame beam and column, poor seismic performance, low stiffness, especially the use of masonry infill walls, infill walls earthquake badly damaged and high repair costs. Therefore, the high-level structure should not be used.

(B) shaped column frame
Special-shaped columns by the mechanical properties of the shear capacity, the node capacity and ductility than ordinary rectangular columns under horizontal seismic the column reinforcement bonded anchor vulnerable to damage, have an adverse effect on the seismic performance. Therefore, the reinforced concrete special-shaped column frame and frame-shear wall structure housing should be within a certain height and Scope application, and can not be equated to the reinforced concrete structure. According to the concrete special-shaped column structure technical regulations applicable to the total height of less than 24 m of housing. The height of the building, shaped columns can not meet the requirements of the axial force and lateral force resisting. Therefore, special-shaped column frame structure compared, the seismic performance of the worst.

(C) frame shear wall structure
Generally used for high-level structure, widely used in recent years, high-level structural design characteristics of this program is the use of floor elevators do reinforced concrete core wall to resist most of the horizontal load, the frame column vertical loads, horizontal displacement and layer drift greatly reduced axial compression ratio limit than the frame structure to relax, but consider the structural requirements of the frame column, and the actual calculation of axial compression ratio is greater than 0.90, the column reinforcement larger, so in a small column grid residential , compared to the frame structure, the size of the column section and impossible much smaller, there are also the use of the building.

(4) special-shaped columns frame shear wall structure
This structural system is a descendant of the frame-shear wall structure, this program is characterized by the use of floor elevators do reinforced concrete core wall to resist most of the horizontal load, shaped column vertical loads, horizontal displacement and interlayer displacement greatly decreases. At the same time, the special-shaped columns and the wall the same width and can better address the construction plane. 6 degrees region, the total height of the frame shear wall structure shall not exceed 45.0m column distance of not more than 7.20m. The reason why the seismic level specially shaped columns above restrictions, mainly the limb shorter length of the profiled column, the height of the building, specially shaped columns can not meet the axial force and lateral force resisting requirements. In the minimum security area, building height greater than 18.0 m seismic level is three points than the framework structure (60.0m) strictly.

(E) the ordinary shear wall structure
Generally used for high-level structure housing, especially widely used in the design of high-rise residential structure layer 30. This program features a reinforced concrete wall, in accordance with the layout of the building and set the appropriate parts of the open structural holes, instead of light infill walls, in order to reduce the structural weight and the project cost, each wall segment can be uniform stiffness, good seismic performance, horizontal displacement story drift is greatly reduced, especially in the actual area of ??the apartment and furnishings.

(F) short shear wall structure
Short shear wall seismic performance is poor, do not have much experience of earthquake zone, see built up safety, Max height of this seismic design, use, seismic level, the thickness of the wall limb, axial compression ratio of Shear force design value, the longitudinal reinforcement rate of more stringent restrictions.

Comparison of Results
 1/2    1 2 Next Last
Please consciously abide by Internet-related policies and regulations.
Tips: Log in to comment, the user name to enter comments directly from your personal space, so that more friends to meet you.

Economic other latest papers

Sponsored Links

Economic other papers Ranking

Latest free papers

Sponsored Links

Top