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Study on shear resistance of aluminum alloy I-section members

DONG Zhen, ZHANG Qilin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1, Pages 79-86 doi: 10.1007/s11709-008-0007-9

Abstract: The design method for the shear resistance of aluminum alloy I-section members is presented, taking intoThe deflection of aluminum alloy I-section members under concentrated load is simulated by using therelation of shear resistance to the maximum web displacement reflects that the web of aluminum alloy I-sectionHowever, the traditional design method is not able to give the real shear resistance of aluminum alloy I-sectionThe proposed design formulas for the shear resistance of aluminum alloy I-section members is used to

Keywords： formulas displacement deflection relation I-section member

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Torsional behavior of triangular web profile (TRIWP) steel section by experimental study

Fatimah DE’NAN,Hazwani HASAN,Mohd Hanim OSMAN,Sariffudin SAAD

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4, Pages 409-419 doi: 10.1007/s11709-016-0358-6

Abstract: A triangular web profile (TriWP) is a modified section where the flanges are connected to a web platerotational angle, the torsional rotation for all TriWP steel sections were smaller than that of the FW steel sectionunder the same torsional loading i.e., 0.2 kNm and 1 kNm.shown that the TriWP steel sections had better resistance against torsion in comparison to FW steel section

Keywords： corrugated web i-beam non uniform steel section torsion resistance torsion angle triangular web profilesteel section

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Introduction to the special section for ACMFMS 2010

Jinhao QIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 271-271 doi: 10.1007/s11465-011-0239-6

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A toughness based deformation limit for X- and K-joints under brace axial tension

Bo GU,Xudong QIAN,Aziz AHMED

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3, Pages 345-362 doi: 10.1007/s11709-016-0333-2

Abstract: deformation limit for the initiation of ductile fracture failure in fatigue-cracked circular hollow section

Keywords： circular hollow section (CHS) tubular joint fracture failure deformation limit <i>Ji>-integral

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Optimal dome design considering member-related design constraints

Tugrul TALASLIOGLU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5, Pages 1150-1170 doi: 10.1007/s11709-019-0543-5

Abstract: This study proposes to optimize the design of geometrically nonlinear dome structures. A new Multi-objective Optimization Algorithm named Pareto Archived Genetic Algorithm (PAGA), which has an ability of integrating the nonlinear structural analysis with the provisions of American Petroleum Institute specification is employed to optimize the design of ellipse and sphere-shaped dome configurations. Thus, it is possible to investigate how the qualities of optimal designations vary considering the shape, size, and topology-related design variables. Furthermore, the computing efficiency of PAGA is evaluated considering six multi-objective optimization algorithms and eight quality measuring indicators. It is shown that PAGA has a capability of both exploring an increased number of pareto solutions and predicting a pareto front with a higher convergence degree. Moreover, the inclusion of shape-related design variables leads to a decrease in both the weights of dome structures and their load-carrying capacities. However, the designer easily determines the most requested optimal design through the archiving feature of PAGA. Thus, it is also demonstrated that the proposed optimal design procedure increases the correctness degree in the evaluation of optimal dome designs through the tradeoff analysis. Consequently, PAGA is recommended as an optimization tool for the design optimization of geometrically nonlinear dome structures.

Keywords： dome structure geometric nonlinearity multi-objective optimization API RP2A-LRFD

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Introduction to the special section on the 12

Zhen-Min CHENG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1, Pages 1-1 doi: 10.1007/s11705-009-0003-1

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Calculation of diagonal section and cross-section bending capacity for strengthening RC structure using

Shouping SHANG , Fangyuan ZHOU , Wei LIU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 330-338 doi: 10.1007/s11709-009-0046-x

Abstract: This paper introduces the formula of cross-section bending capacity for strengthening concrete beamsA comparative analysis of experimental data, as well as the calculation of diagonal section bearing capacity

Keywords： RC beams high-performance ferrocement laminate (HPFL) inorganic material reinforcement

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662 A/G gene variation in human tumor necrosis factor receptor superfamily, member 9 (TNFRSF9)

QU Yanchun, YANG Ze, SUN Liang, JI Linong

Frontiers of Medicine 2008, Volume 2, Issue 3, Pages 283-285 doi: 10.1007/s11684-008-0053-7

Abstract: The aim of this paper is to report a new coding variance of the gene, a candidate for autoimmune diseases. We found the variation in two families with type 2 diabetes mellitus by D-HPLC mutation screening method and confirmed our results by direct sequencing and PCR-RFLP. Although without changing the amino acid coding, the variance may have an effect on codon usage and play a role in disease development, such as type 2 diabetes mellitus. However, we cannot define the role of this variance because the frequency of the minor allele is low in the Chinese population and no homozygote of the variance was found. More research in multiple populations will be necessary to define the role of this variance.

Keywords： D-HPLC mutation development autoimmune PCR-RFLP candidate

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Introduction to the Special Section on Biomedical Devices for Personal Health Applications

I-Ming CHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 1-2 doi: 10.1007/s11465-011-0210-6

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Introduction to the special section on the Symposium on Computational Fluid Dynamics and Molecular Simulation

Tianwei TAN, Peiyong QIN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3, Pages 241-241 doi: 10.1007/s11705-009-0285-3

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Shear strength model of the reinforced concrete beams with embedded through-section strengthening bars

Linh Van Hong BUI; Phuoc Trong NGUYEN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7, Pages 843-857 doi: 10.1007/s11709-022-0834-0

Abstract: investigate the shear capacity of reinforced concrete (RC) beams strengthened with embedded through-section

Keywords： embedded through-section strengthening fiber-reinforced polymer finite element shear strength model

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Improving retrieval precision of NO

Jinpeng YANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 92-96 doi: 10.1007/s11465-009-0001-5

Abstract: The NO density error retrieved by the traditional method of differential optical absorption spectroscopy (DOAS) was analyzed. The technique for reducing the error is proposed and used to obtain the NO density of Chengdu through DOAS.

Keywords： absorption structure low-frequency structure absorption cross-section NO₂ density

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Behavior of concrete-filled double skin steel tubular columns with octagon section under axial compression

YANG Junjie, PENG Guojun, XU Hanyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3, Pages 205-210 doi: 10.1007/s11709-008-0035-5

Abstract: skin steel tube (CFDSST) members with circular or square sections, a new kind of CFDSST with octagonal section, where the outer tube has an octagonal section and the inner tube has a circular section, is proposedBehaviors of the CFDSST members with octagon section subjected to axial compression are investigated,It is indicated that the bearing capacity of the columns with octagonal section is larger than that withsquare section and is smaller than that with circular section, and the bearing capacity of members is

Keywords： mathematical numerical compression stress-strain relationship straight

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Trial design of arch bridge of composite box section with steel web-concrete flange

Jiangang WEI, Qingwei HUANG, Baochun CHEN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3, Pages 370-375 doi: 10.1007/s11709-010-0073-7

Abstract: The concrete arch bridge is a natural and appropriate structural solution, aesthetically pleasing and easily integrated into the environment, especially in mountainous and island areas. However, construction difficulty and cost will increase with heavy self-weight when the span enlarges. A potential solution is to use a composite box arch ring with steel web-concrete flange. Taking Wanzhou Yangtze River Bridge (the longest concrete arch bridge in the world with a main span of 420 m) as a prototype, trial designs of a composite box arch with steel webs (including corrugated steel webs and plain steel webs) and concrete flanges were carried out. Comparison of quantities and structural behaviors of the prototype concrete arch with the two trial designed composite arch was presented. It is shown that the self-weight of the composite arch can reduce about 28% and the structures can meet the design requirements, therefore it is possible to use the two composite arches in long span arch bridges.

Keywords： steel webs concrete box arch trial design structural behaviors finite element method

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Contraceptive willingness of women after cesarean section in Beijing

Shen Jie,Gao Lili and Pan Ying

Strategic Study of CAE 2014, Volume 16, Issue 5, Pages 16-19

Abstract: >To learn the contraceptive willingness and it’s affecting factors among women after cesarean sectionStratified cluster sampling and randomized data collection by questionnaires of women after cesarean sectionThe median of the women’s planning intercourse after cesarean section was 7 weeks. 96.43 % of theThere are risks of pregnancy after cesarean section.which will be helpful to decrease the risk of induced abortion after cesarean section.

Keywords： bearing-aged women after cesarean section postnatal services contraception