On the Thin-Walled Theory’s Application to Calculate the Semi-enclosed Core Structure of High-Rise Buildings

2021 ◽  
pp. 866-874
Author(s):  
Nguyen Tien Chuong ◽  
Doan Xuan Quy
Keyword(s):  
Core Structure ◽  
High Rise ◽  
Thin Walled

Concretes with Unique Properties for Special Building Structures

2019 ◽  
Vol 945 ◽  
pp. 64-69 ◽  
Author(s):  
V. Solovyova ◽  
D. Solovyov ◽  
I. Stepanova
Keyword(s):  
Building Materials ◽  
Water Resistance ◽  
High Efficiency ◽  
Silica Sol ◽  
Building Structures ◽  
High Rise ◽  
Concrete Properties ◽  
Complex Additive ◽  
Potassium Nitrite ◽  
Thin Walled

The paper presents new results in the building materials area. One of the solutions of the thin-walled elements obtaining can be achieved due to new additive using. The main purpose of the paper was improvement concrete properties for thin-walled constructive elements. The experimental and standard methods have been used and new complex additive for concrete. The research shows that a comprehensive additive consisting of aqueous solution of polycarboxilate polymer, silica sol and potassium nitrite is effective and makes it possible to produce high-efficiency concrete with unique properties: higher compression strength, higher crack resistance, frost resistance, water resistance, abrasion resistance. The study shows that the concrete is chemical resistant. Modified concrete can be recommended for manufacturing critical concrete structures of special purpose, for example high-rise constriction.

scholarly journals INVESTIGATING THE BEHAVIOR OF PILED RAFT FOUNDATION IN CORE WALL FOUNDATION OF HIGH-RISE BUILDINGS

2021 ◽  
pp. 1-9
Author(s):  
Tuan Nguyen Anh
Keyword(s):  
Core Structure ◽  
High Rise ◽  
Geometry Model ◽  
The Core ◽  
Piled Raft ◽  
Piled Raft Foundation ◽  
Raft Foundation ◽  
Wall Foundation ◽  
The Moment ◽  
Plaxis 3D

Core structure is an indispensable part of high buildings. Normally, the foundation of the core structure has a raft of larger size than the other foundations in the same project; therefore, the foundation of the core structure can be viewed as a small piled raft foundation. Currently, when calculating the piled foundation of the core, it is mostly assumed that the piles system will bear all the project loads. But this calculation method is not suitable for the actual constructions as well as does not make full use of the bearing capacity of the structure and the ground, leading to using more materials and causing more waste. Core structure aims to increase both stiffness and horizontal load capacity in high-rise buildings, so the moment inside the core transmitted to the foundation is very large. One of the shortcomings of the Plaxis 3D Foundation software is its inability to declare the moment affecting on the foundation due to the loads in this program just includes distributed loads, line loads and point loads in the geometry model. Consequently, when using Plaxis 3D Foundation software to calculate the core wall foundation of high-rise buildings, this moment is converted into an equivalent pair of moments. The research shows that when the core foundation of a high-rise building is placed on soft soil, the pile carries 96%, most of the load transmitted to the foundation. However, when the foundation is placed on hard soil, the soil surrounding the raft will bear about 10% of the load transmitted to the foundation. If this matter is skipped, there will be a large error in calculation and design

scholarly journals An analytical formulation to evaluate natural frequencies and mode shapes of high-rise buildings

2021 ◽  
Vol 8 (1) ◽  
pp. 307-318
Author(s):  
Giuseppe Nitti ◽  
Giuseppe Lacidogna ◽  
Alberto Carpinteri
Keyword(s):  
Degrees Of Freedom ◽  
Natural Frequencies ◽  
Shear Walls ◽  
Vertical Axis ◽  
Mode Shapes ◽  
Analytical Formulation ◽  
High Rise ◽  
Open Section ◽  
Stiffness Matrices ◽  
Thin Walled

Abstract In this paper, an original analytical formulation to evaluate the natural frequencies and mode shapes of high-rise buildings is proposed. The methodology is intended to be used by engineers in the preliminary design phases as it allows the evaluation of the dynamic response of high-rise buildings consisting of thin-walled closed- or open-section shear walls, frames, framed tubes, and dia-grid systems. If thin-walled open-section shear walls are present, the stiffness matrix of the element is evaluated considering Vlasov’s theory. Using the procedure called General Algorithm, which allows to assemble the stiffness matrices of the individual vertical bracing elements, it is possible to model the structure as a single equivalent cantilever beam. Furthermore, the degrees of freedom of the structural system are reduced to only three per floor: two translations in the x and y directions and a rigid rotation of the floor around the vertical axis of the building. This results in a drastic reduction in calculation times compared to those necessary to carry out the same analysis using commercial software that implements Finite Element models. The potential of the proposed method is confirmed by a numerical example, which demonstrates the benefits of this procedure.

A New Construction Process in Core Wall of High-Rise Building: Core Structure Succeeding Method

2013 ◽  
Vol 838-841 ◽  
pp. 241-244
Author(s):  
Hyun Woo Joh ◽  
In Sig Lim ◽  
Yong Hwa Choi ◽  
Yoon Seok Shin ◽  
Gwang Hee Kim
Keyword(s):  
Project Manager ◽  
Core Structure ◽  
Building Construction ◽  
Construction Costs ◽  
High Rise ◽  
High Rise Building ◽  
New Construction ◽  
Wall Construction ◽  
Construction Works

Of the construction processes involved in high-rise building construction, core wall construction is a highly repetitive construction works. Therefore, the effective management of core wall construction works by a project manager can save costs and shorten the duration of high-rise building construction. This study analyzes a case in which a core structure succeeding method (CSSM) is applied to core wall construction. The results of the case study found that the efficiency of CSSM in terms of construction costs and duration is higher than that of the core wall preceding construction method (CWPCM).

scholarly journals Thin-walled building structures with improved properties for high-rise construction

2019 ◽  
Vol 265 ◽  
pp. 05004
Author(s):  
Valentina Solovyova ◽  
Makhmud Abu-Khasan ◽  
Dmitry Solovyov
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Silica Sol ◽  
Housing Construction ◽  
Building Structures ◽  
Cesium Nitrate ◽  
Strength Concrete ◽  
High Rise ◽  
High Efficient ◽  
Thin Walled

A high-efficient complex reactive composition consisting of a polycarboxylate polymer, cesium nitrate (CsNO3) and silica sol was developed for cast-in-place housing construction from high-strength concrete. The use of this composition provides production of high-strength concrete with increased crack resistance.

scholarly journals Thin-Walled CFST Columns for Enhancing Seismic Collapse Performance of High-Rise Steel Frames

2017 ◽  
Vol 7 (1) ◽  
pp. 53 ◽  
Author(s):  
Yongtao Bai ◽  
Jiantao Wang ◽  
Yashuang Liu ◽  
Xuchuan Lin
Keyword(s):  
Steel Frames ◽  
High Rise ◽  
Seismic Collapse ◽  
Thin Walled ◽  
Cfst Columns

scholarly journals Design and bearing capacity analysis of cold-formed thin-walled steel-timber composite members

2021 ◽  
Vol 248 ◽  
pp. 03047
Author(s):  
Futing Pan ◽  
Ying Wang ◽  
Chunxiao Huang
Keyword(s):  
Bearing Capacity ◽  
Steel Plate ◽  
Local Buckling ◽  
Steel Structure ◽  
Thickness Ratio ◽  
Capacity Analysis ◽  
Light Weight ◽  
High Rise ◽  
Thin Walled ◽  
Large Width

Cold-formed thin-walled steel has light weight, large width thickness ratio, good economy and seismic performance. It is easy to realize standardization of design, and is very suitable for the development of prefabricated buildings. Due to the large width thickness ratio of cold-formed thin-walled steel , the steel plate is prone to local buckling when it is compressed, which will reduce the ductility and bearing capacity of the structure, which also leads to the limitation of the use of cold-formed thin-walled steel structure system in medium and high-rise buildings. In this paper, a kind of cold-formed thin-walled steel-timber composite members is designed. The section steel and the board are closely linked by bolts to work together. The thickness of the board and the spacing of the bolts are designed respectively, so as to provide reference for engineering design.

Study of Wind-Induced Vibration of a High-Rise and Thin-Walled Steel Tower

2020 ◽  
Vol 108 (sp1) ◽  
Author(s):  
Xihui Wang ◽  
Bo Song ◽  
Yongmei Qian ◽  
Jun Lao
Keyword(s):  
High Rise ◽  
Thin Walled ◽  
Wind Induced Vibration
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