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Control mode selection for modal control of long-span arch bridge

Zhengying LI, Zhengliang LI,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4, Pages 401-406 doi: 10.1007/s11709-009-0052-z

Abstract: For seismic control of arch bridge, a model reduction of long-span arch bridge was implemented basedThe numerical results show that the method of maximal modal displacement better analyze long-span arch

Keywords： selection reduced-order excitation long-span simplified

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State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4, Pages 379-388 doi: 10.1007/s11709-007-0051-x

Abstract: introduces the state-of-the-art of longspan bridge engineering in China with emphases on recent long-spanbridge projects, bridge deck configuration and material, design codes of long-span bridges and improvement

Keywords： bridge engineering state-of-the-art long-span bridge configuration improvement

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Design and construction of super-long span bridges in China: Review and future perspectives

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4, Pages 803-838 doi: 10.1007/s11709-020-0644-1

Abstract: Super-long span bridges demand high design requirements and involve many difficulties when constructedOver the past three decades, a large percentage of the new long-span bridges around the world were builtconstruction practices of the superstructure, the substructure, and the steel deck paving of the long-spanbridges during the past decades as well as the current operation status of the existing long-span bridgestechnology, which is expected to guide the development direction for the construction of future super long-span

Keywords： long-span bridges steel box girder design technology construction technology review and future perspectives

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Innovative steel-UHPC composite bridge girders for long-span bridges

Xudong SHAO, Lu DENG, Junhui CAO

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4, Pages 981-989 doi: 10.1007/s11709-019-0531-9

Abstract: Steel and steel-concrete composite girders are two types of girders commonly used for long-span bridgesThus, to improve the serviceability and durability of girders for long-span bridges, three new typescoefficient, low risk of cracking, and excellent durability, making them competitive alternatives for long-spanIt is expected that the application of the new steel-UHPC composite girders on long-span bridges will

Keywords： steel-UHPC composite bridge girder long-span bridge orthotropic steel deck fatigue cracking durability

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Research on bolt-cable reducing span support technology in large span roadway of fully-mechanized coal

Zhu Yongjian,Luo Yixin,Zhang Daobing

Strategic Study of CAE 2010, Volume 12, Issue 3, Pages 51-55

Abstract:

Aiming at the locale facts of difficult roof controlling for large spanA new supporting idea of reducing span supporting function by bolts cooperating with anchor cables isA good result is achieved after the new supporting idea is applied in the large span gateway of Bulianta

Keywords： large span roadway roof bolt—cable reducing span support

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Limit span of self-anchored cable-stayed suspension cooperation system bridge based on strength

Zhe ZHANG , Huili WANG , Xiaomeng GE , Sifeng QIN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 286-291 doi: 10.1007/s11709-009-0045-y

Abstract: The limit span of self-anchored cable-stayed suspension bridge is deduced.The corresponding upper limit spans and the effect of the factors on the span are given.The results indicate that increasing rise-span ratio, height-span ratio and cable-stayed segment lengthor reducing the second dead load could increase the cooperation system span.

Keywords： cable-stayed suspension self-anchored limit span

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Several issues to be considered for long-term better behavior of concrete gravity dams

Jinsheng JIA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 40-46 doi: 10.1007/s11709-010-0006-5

Abstract: The life span and the real safety status of old dams becomes a challenging task for the dam society,operated since 1943 and suffered uplift pressure, freeze and thaw problems, etc., discussions on the life span

Keywords： dam safety economic life span structural life span environmental life span rehabilitation social decision

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Application and development of modern long-span space structures in China

Shilin DONG, Yang ZHAO, Dong XING

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 224-239 doi: 10.1007/s11709-012-0166-6

Abstract: Modern long-span space structures, developed during the 1970s and 1980s, are light and effective structures

Keywords： modern long-span space structures rigid space structures flexible space structures rigid-flexible combined

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Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2, Pages 153-162 doi: 10.1007/s11709-007-0016-0

Abstract: technological feasibility of suspension bridges with longer spans, the static estimation of feasible spanreviewed, a trial design of a 5 000 m suspension bridge, which is estimated as a reasonable limitation of spanlength, is finally conducted to respond to the tomorrow s challenge in span length of suspension bridges

Keywords： requirement reasonable limitation challenge particular economical construction

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Frontier of continuous structural health monitoring system for short & medium span bridges and condition

Ayaho MIYAMOTO, Risto KIVILUOMA, Akito YABE

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3, Pages 569-604 doi: 10.1007/s11709-018-0498-y

Abstract: becoming an important social problem to make maintenance and rehabilitation of existing short and medium span(10-20 m) bridges because there are a huge amount of short and medium span bridges in service in thethe information and communication technologies for lifetime management of existing short and medium spancontinuous data collecting system designed for bridge health monitoring of mainly short and medium spanIn this paper, although there are some useful monitoring methods for short and medium span bridges based

Keywords： condition assessment short & medium span bridge structural health monitoring(SHM) long-term data collection

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Control of wind-induced vibration of long-span bridges and tall buildings

GU Ming

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1, Pages 51-62 doi: 10.1007/s11709-007-0005-3

Abstract: structures, research on controlling wind-induced vibration of large-scale structures, such as long-span

Keywords： torsional buffeting large-scale semiactive adjustable frequency building aeroelastic

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Structural design and mechanical responses of closely spaced super-span double tunnels in strongly weathered

Jiaxin HE; Shaohui HE; Xiabing LIU; Jinlei ZHENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6, Pages 685-703 doi: 10.1007/s11709-022-0824-2

Abstract: One is Xiabei Mountain No. 2 four-line super-span high-speed railway tunnel (HRT), and the other is XiabeiMountain double-line large-span subway tunnel (ST).

Keywords： double tunnels super-span structural design mechanical response numerical simulation field monitoring

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Construction of shallow buried large-span metro stations using the small pipe roof-beam method

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 1, Pages 122-136 doi: 10.1007/s11709-024-1008-z

Abstract: In relation to the Shifu Road Station project on Line 4 of the Shenyang Metro in China, a small-pipe roof-beam method for constructing subway stations is presented. First, a numerical simulation was performed to optimize the supporting parameters of the proposed method and determine the design scheme. Subsequently, the deformation of the pipe roof and surface settlement during the construction process were investigated. Finally, the surface settlement attributed to the excavation was studied through field monitoring, and the proposed method was compared with other methods. The results show that an increase in the pipe-roof spacing has little effect on the surface settlement and pipe-roof deformation. The bearing capacity of the pipe roof can be efficiently utilized once the flexural stiffness reaches 2EI, and the flexural stiffness is not the dominant factor controlling the deformation. The essential stages in controlling surface settlement are the excavations of the transverse pilot tunnels and the soil between them. The final settlement value of the ground was 24.1 mm, resulting in a reduction in the construction period by at least five months while satisfying the control requirements.

Keywords： subway station pipe-roof method surface settlement simulation on-site monitoring

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Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4, Pages 363-384 doi: 10.1007/s11709-016-0353-y

Abstract: critical wind velocities and lock-in phenomena will appear at lower natural frequencies of the long spanThis helps the designers to efficiently plan and consider for the design and safety of the long span

Keywords： vortex-induced vibration fluid-structure interaction Strouhal number lock-in kinetic energy

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Synthesis of nanoiron by microemulsion with Span/Tween as mixed surfactants for reduction of nitrate

ZHANG Yunxia, LI Tielong, JIN Zhaohui, WANG Wei, WANG Shuaima

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 466-470 doi: 10.1007/s11783-007-0074-5

Abstract: Denitrification of nitrate in groundwater using iron nanoparticles has received increasing interest in recent years. In order to fabricate iron nanoparticles with homogeneously spherical shape and narrow size distribution, a simp

Keywords： spherical distribution groundwater interest Denitrification