Slab spatial composite effect in composite frame systems. II: Equivalent stiffness and verifications

2012 ◽  
Vol 38 ◽  
pp. 185-199 ◽  
Author(s):  
Jian-guo Nie ◽  
Mu-xuan Tao
Keyword(s):  
Equivalent Stiffness ◽  
Composite Effect ◽  
Composite Frame ◽  
Frame Systems

scholarly journals Mathematical Model of Hybrid Precast Gravity Frames for Smart Construction and Engineering

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Seon-Chee Park ◽  
Won-Kee Hong ◽  
Sunkuk Kim ◽  
Xiangyu Wang
Keyword(s):  
Hybrid Composite ◽  
Precast Concrete ◽  
Economic Feasibility ◽  
Mode Shapes ◽  
Environmental Friendliness ◽  
Composite Frames ◽  
Composite Frame ◽  
Frame System ◽  
Frame Systems ◽  
Simply Connected

The structural stability, constructability, economic feasibility, environmental-friendliness, and energy efficiency of hybrid composite frame systems have been demonstrated by practical application and research. A hybrid composite frame system combines the economy of precast concrete structures with the constructability of steel frame structures, including erection speed. Novel composite frames will ultimately maximize the efficiency of structural design and facilitate construction. This paper presents hybrid precast frames, which are precast composite frames based on a simple connection between precast concrete columns and beams. The hybrid precast frames designed to resist gravity loading consist of PC columns, PC beams, and steel inserted in the precast members. Steel sections located between the precast columns were simply connected to steel inserted at each end of the precast beams. Dynamic analysis of a 15-story building designed with the proposed composite frame was performed to determine the dynamic characteristics of a building constructed of hybrid frames, including frequencies and mode shapes.

scholarly journals Analysis and Design of Steel-Concrete Composite Frame Systems

2014 ◽  
Author(s):  
Mark D. Denavit ◽  
Jerome F. Hajjar ◽  
Roberto T. Leon ◽  
Tiziano Perea
Keyword(s):  
Analysis And Design ◽  
Composite Frame ◽  
Frame Systems

scholarly journals Experimental Investigation on Double Skin Composite Tubular Column

2021 ◽  
Vol 9 (VI) ◽  
pp. 755-763
Author(s):  
K. C. Rajkumar
Keyword(s):  
Structural Engineering ◽  
High Strength ◽  
Frame Structure ◽  
Fiber Reinforced Polymers ◽  
Tubular Columns ◽  
Composite Frame ◽  
Steel Members ◽  
Frame System ◽  
Double Skin ◽  
Frame Systems

RCC and steel frames have been the most common frame systems for long times whereas composite frame system has also emerged as popular system for high rise buildings for few decades. Multi-storey composite frames are generally composed of structural steel members made composite with concrete. The use of Double-Skin Tubular columns in building construction has seen renaissance in recent years due to their numerous advantages, apart from its superior structural performance making a typical composite frame structure. Fiber reinforced polymers (FRPs), a relatively new class of non-corrosive, high-strength, lightweight material, have over the past approximately 15 years emerged as practical materials for a number of structural engineering applications. FRP has become one of the most popular methods in the repair and rehabilitation of concrete infrastructure due to its ease of application and the special physical characteristics. This paper focus to determine the compressive strength of columns in different type of specimens under Axial load.

Modeling and investigation of elasto-plastic behavior of steel–concrete composite frame systems

2011 ◽  
Vol 67 (12) ◽  
pp. 1973-1984 ◽  
Author(s):  
Jianguo Nie ◽  
Muxuan Tao ◽  
C.S. Cai ◽  
Ge Chen
Keyword(s):  
Plastic Behavior ◽  
Composite Frame ◽  
Frame Systems

scholarly journals Mechanical Behavior of Hydroxyapatite-Chitosan Composite: Effect of Processing Parameters

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 213
Author(s):  
Hamid Ait Said ◽  
Hassan Noukrati ◽  
Hicham Ben Youcef ◽  
Ayoub Bayoussef ◽  
Hassane Oudadesse ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Compressive Strength ◽  
Mechanical Strength ◽  
Bone Repair ◽  
Mechanical Stability ◽  
Three Dimensional ◽  
Processing Parameters ◽  
Composite Effect ◽  
Solid Liquid ◽  
The Impact

Three-dimensional hydroxyapatite-chitosan (HA-CS) composites were formulated via solid-liquid technic and freeze-drying. The prepared composites had an apatitic nature, which was demonstrated by X-ray diffraction and Infrared spectroscopy analyses. The impact of the solid/liquid (S/L) ratio and the content and the molecular weight of the polymer on the composite mechanical strength was investigated. An increase in the S/L ratio from 0.5 to 1 resulted in an increase in the compressive strength for HA-CSL (CS low molecular weight: CSL) from 0.08 ± 0.02 to 1.95 ± 0.39 MPa and from 0.3 ± 0.06 to 2.40 ± 0.51 MPa for the HA-CSM (CS medium molecular weight: CSM). Moreover, the increase in the amount (1 to 5 wt%) and the molecular weight of the polymer increased the mechanical strength of the composite. The highest compressive strength value (up to 2.40 ± 0.51 MPa) was obtained for HA-CSM (5 wt% of CS) formulated at an S/L of 1. The dissolution tests of the HA-CS composites confirmed their cohesion and mechanical stability in an aqueous solution. Both polymer and apatite are assumed to work together, giving the synergism needed to make effective cylindrical composites, and could serve as a promising candidate for bone repair in the orthopedic field.

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