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residual behavior of welded hollow spherical joints after

Zhongwei ZHAO Doctor of Engineering Liaoning Technical

Welded hollow spherical joints (WHSJs) are commonly used joints in reticulated shell structures. It is very necessary to access the influence of welding residual stress on mechanical behavior Welded High Strength Steel Structures02.11.2020.Welded High Strength Steel Structures Categories 387 387Study on Fracture Toughness of welded joints for heavy-thickStudy on Fracture Toughness of welded joints for heavy-thick

Some results are removed in response to a notice of local law requirement.For more information,please see here.Residual behaviour of welded hollow spherical joints under

May 07,2020 residual behavior of welded hollow spherical joints after#0183;Understanding the post-fire residual behavior of welded hollow spherical joints is crucial for fire damage assessment of the space lattice structures.However,the post-fire behavior of weldedResidual bearing capacity of welded hollow spherical characteristic of WHSJs had significant influence on the residual tensile and compressive capacity.Moreover,the results could also lay a foundation for the reasonable evaluation,repair and reinforcement of the space structure connected by welded hollow spherical joints after corrosion damage.

Quarterly Publication Rs.20 JULY 2019 Weld 18 Bead 2

method was proposed from the post-fire residual behaviour of welded hollow spherical joints of Q235 and Q345 steels at 600 residual behavior of welded hollow spherical joints after#176;C,800 residual behavior of welded hollow spherical joints after#176;C,and 1000 residual behavior of welded hollow spherical joints after#176;C [10].Liu et al [11] evaluated the post-fire residual mechanical properties of Q235 and Q345 steel butt welded joints,results revealed that post-fire properties of welded joints were affected withProceedings of IASS Annual Symposia Ingenta ConnectStudy on the Axial Compression Behavior of Circular Steel Tubes under the Influence of Local Corrosion Favourites ADD.Internal blast loads in confined spherical shell structures pp.1-8(8) Authors Qi,Shaobo; Zhi,Xudong; Ma,Jialu; Fan,Feng.Favourites ADD.Residual behavior of welded hollow spherical joints after exposure to the ISO Previous123456NextMECHANICAL CALCULATION MODEL FOR WELDEDKeywords Welded hollow spherical joint,Mechanical calculation model,Finite element analysis model,Rupture,Failure mechanism,Structural damage 1.INTRODUCTION The welded hollow spherical joint was invented and first used in Tianjin Science Technology Hall in 1965 (Makowski [1]).Nowadays,this pattern of joint is extensively applied in

Post-fire axial compression properties of welded hollow

Oct 01,2019 residual behavior of welded hollow spherical joints after#0183;Based on the parametric analysis,the main factors influencing the post-fire residual bearing capacity coefficient of welded hollow spherical joints are as follows wall thickness (t) of the hollow sphere,steel tube diameter (d),diameter ratio (d/D),and residual deformation (x/D).The residual bearing capacity coefficient given the same residual deformation at 700 residual behavior of welded hollow spherical joints after#176;C is less than those of otherPost-fire Behavior of Welded Hollow Spherical Joints Apr 25,2018 residual behavior of welded hollow spherical joints after#0183;Understanding the post-fire residual behavior of welded hollow spherical joints is crucial for fire damage assessment of the space lattice structures.However,the post-fire behavior of welded hollow spherical joints has not been explored in existing studies.In this paper,experimental and numerical studies were conducted to investigate the residual behavior of eccentrically loaded weldedPersonal Information Science Publishing GroupFrom 2017 to 2020,National Natural Science Foundation of China (General Program) ,Study on residual mechanical properties of space grid structure with welded hollow spherical after fire.

Mechanical performance of welded hollow spherical joints

H.B.Liu,J.Lu,Z.H.ChenResidual behavior of welded hollow spherical joints after exposure to elevated temperatures J Constr Steel Res,137 (2017),pp.102-118 Google ScholarMECHANICAL PERFORMANCE OF WELDED HOLLOWJoints in the spatial grid structure mainly include WHSJs,bolted hollow spherical joints,hub-type joints,cast steel joints,tubular joints,and Temcor joints (Fig.1) 1,2,3,4,5 .WHSJs were proposed by Professor Liu [6] from Tianjin University in 1965.With a clear load path and convenient connectionMECHANICAL PERFORMANCE OF WELDED HOLLOW SPHERICAL JOINTS [21] Liu H.B.,Lu J.and Chen Z.H.,Residual behavior of welded hollow spherical joints after exposure to elevated temperatures,Journal of Constructional Steel Research,137,102-118,2017.[22] Lu J.,Liu H.B.and Chen Z.H.,Behavior of Welded Hollow Spherical Joints After Exposure to ISO-834 Standard Fire,Journal of

MECHANICAL PERFORMANCE OF WELDED HOLLOW SPHERICAL JOINTS

[21] Liu H.B.,Lu J.and Chen Z.H.,Residual behavior of welded hollow spherical joints after exposure to elevated temperatures,Journal of Constructional Steel Research,137,102-118,2017.[22] Lu J.,Liu H.B.and Chen Z.H.,Behavior of Welded Hollow Spherical Joints After Exposure to ISO-834 Standard Fire,Journal of Journal of Constructional Steel Research - August 2019 Mechanical behavior of welded hollow spherical joints with diameter exceeding 1.0 m 21-33 Guo,Zhen / Qiao,Wenjuan / Jia,Xingzhi Mechanical properties of butt weldments made with E5515-G electrodes at high temperature 13-20 Wang,Yu-yin / Geng,Yue / Zhao,Mu-Zi / Chen,JieInfluence of welded hollow spherical joints on the Welded hollow spherical joints (WHSJ) are widely used in space lattice structures.Beam models are widely adopted in analyzing integral structures for high computational efficiency.However,the influence of WHSJ cannot be estimated accurately,and few studies on the accuracy of beam models are available.Numerical models in different scales were established,and results derived from different

In general,without comprehensive knowledge of the mechanical performances of welded hollow spherical joints after exposure to elevated temperatures,the post-fire evaluation of the residual behavior of structures with welded hollow spherical joints is not credible,which may induce uneconomical consequences or potential safety problems.Author:Hongbo Liu,Hongbo Liu,Jie Lu,Zhihua ChenCited by:20Publish Year:2017Residual behavior of welded hollow spherical joints after

Was this helpful?Residual behavior of welded hollow spherical joints after Oct 01,2017 residual behavior of welded hollow spherical joints after#0183;The mechanical behavior of welded hollow spherical joints significantly changed after exposure to temperatures exceeding 600 residual behavior of welded hollow spherical joints after#176;C,with phenomena of reductions in stiffness and strength but an increase in ductility level.Furthermore,the influences of different cooling methods were remarkable.Hongbo Liu's research works Tianjin University,Tianjin An H-beam welded hollow spherical joint is a new kind of spatial grid structure.In this study,the eccentric-loaded behavior of H-beam welded hollow spherical joints was studied,and the Form and Force 2019 - CIMNEResidual bearing capacity of welded hollow spherical joints after corrosion damage.Huiyun Chen,Hongbo Liu and Zhihua Chen.Abstract.A comparative study of the structural performance of different types of reticulated dome subjected to distributed loads.W.Gythiel,C.Mommeyer,T.Raymaekers and M.Schevenels.Abstract

Fatigue performance and life prediction methods research

The grid structures with welded hollow spherical joint (WHSJ) have gained increasing popularity for use in industrial buildings with suspended cranes,and usually welded with steel tube (ST).The fatigue performance of steel tube-welded hollow spherical joint (ST-WHSJ) is however not yet well characterized,and there is little research on fatigue life prediction methods of ST-WHSJ.Fatigue performance and life prediction methods research The grid structures with welded hollow spherical joint (WHSJ) have gained increasing popularity for use in industrial buildings with suspended cranes,and usually welded with steel tube (ST).The fatigue performance of steel tube-welded hollow spherical joint (ST-WHSJ) is however not yet well characterized,and there is little research on fatigue life prediction methods of ST-WHSJ.Failure mechanism and practical load-carrying capacity hollow spherical joints under compressive load,and determined that joint connected with many members can be simplified into joint with single member.Some scholars researched effects of weld on capacity,and dynamic behaviour.Tests on joint were all limited by material graded Q235.The number of experiment of joint mad from Q345 was very small.

Experimental and numerical study on post-fire behavior of

Experimental study and finite element modeling on the structural behavior of high-strength Q460 steel columns after being exposed to ISO-834 standard fire are presented.Two section shapes were conExperimental Study on Residual Mechanical Properties of Through tensile testing of 15 steel bolt-sphere joints and 15 aluminum alloy bolt-sphere joints,influencing rules of material type,high temperature and cooling mode on tensile properties of post-fire bolt-sphere joints were studied,and then failure modes of the joints were determined.According to experimental data,the calculation formula of residual tension capacity of post-fire bolt Experimental Study on Constant-Amplitude Fatigue The grid structure with welded hollow spherical joints (WHSJs) is widely used in industrial buildings with suspended cranes.Cyclic loadings generated by the suspended cranes could result in the fatigue failure of WHSJs.However,a corresponding fatigue design method has not been established.This paper presents an experimental study on the fatigue performance of the weld toe in the steel tube

Design of Welded Tubular Connections - Basis and Use of

Design of Welded Tubular Connections - Basis and Use of AWS Code Provisions 14.10.2020 qejir No Comments Design of Welded Tubular Connections Basis andComparison of residual stress on different three Zhao,Z,Zhu,H,Chen,Z.Mechanical behavior of single-layer reticulated shell connected by welded hollow spherical joints with considering welding residual stress.Weld World 2016 ; 60 61 69 .Comparison of residual stress on different three Zhao,Z,Zhu,H,Chen,Z.Mechanical behavior of single-layer reticulated shell connected by welded hollow spherical joints with considering welding residual stress.Weld World 2016 ; 60 61 69 .

Cited by 2Publish Year 2020Author Hongbo Liu,Huiyun Chen,Zhihua ChenResidual behavior of welded hollow spherical joints after

The mechanical behavior of welded hollow spherical joints significantly changed after exposure to temperatures exceeding 600 residual behavior of welded hollow spherical joints after#176;C,with phenomena of reductions in stiffness and strength but anCited by 20Publish Year 2017Author Hongbo Liu,Hongbo Liu,Jie Lu,Zhihua ChenResidual behaviour of welded hollow spherical joints under Apr 01,2020 residual behavior of welded hollow spherical joints after#0183;This paper presents an experimental study of welded hollow spherical joints (WHSJs) under corrosion and de-rusting conditions.First,two scanning tests (3D scanning and scanning electron microscopy (SEM)) and a weight loss test were conducted on the same batch of steel used to manufacture the joints to investigate the corrosion morphology and development of the WHSJs underCited by 14Publish Year 2018Author Jie Lu,Jie Lu,Hongbo Liu,Zhihua ChenResidual bearing capacity of welded hollow spherical characteristic of WHSJs had significant influence on the residual tensile and compressive capacity.Moreover,the results could also lay a foundation for the reasonable evaluation,repair and reinforcement of the space structure connected by welded hollow spherical joints after corrosion damage.

Behavior of welded hollow spherical joints after exposure

Jan 01,2018 residual behavior of welded hollow spherical joints after#0183;In this paper,experimental and numerical studies were conducted to reveal the residual structural behavior of welded hollow spherical joints after fire exposure.Axial compressive tests were performed on eight joint specimens after exposure to the ISO-834 standard fire (including both heating and cooling phases),and three highest fire temperatures,i.e.,600 residual behavior of welded hollow spherical joints after#176;C,800 residual behavior of welded hollow spherical joints after#176;C,and 1000 residual behavior of welded hollow spherical joints after#176;C,wereAnalysis of Welded Structures Residual Stresses Analysis of Welded Structures Residual Stresses,Distortion,and Their Consequences hoty 31.10.2020 Leave a comment Residual stresses and distortions in welded structures A12345NextPost-fire Behavior of Welded Hollow Spherical Joints Apr 25,2018 residual behavior of welded hollow spherical joints after#0183;Welded hollow spherical joints are widely used as a connection pattern in space lattice structures.Understanding the post-fire residual behavior of welded hollow spherical joints is crucial for fire damage assessment of the space lattice structures.However,the post-fire behavior of welded hollow spherical joints has not been explored in existing studies.

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