An innovative bolt fastener for steel tube bracing in deep excavations - Details

Author：

Zhang, Mingju (Zhang, Mingju.) (Scholars：张明聚) | Yang, Meng (Yang, Meng.) | Li, Pengfei (Li, Pengfei.) (Scholars：李鹏飞) | Lu, Dechun (Lu, Dechun.) (Scholars：路德春)

Indexed by：

EI Scopus

Abstract：

In　order　to　improve　the　active　node　structure　in　steel　tube　bracing　system,　an　innovative　Bolt　Fasten　Wedge　(BFW)　active　node　is　proposed　in　this　study.　Firstly,　the　BFW　active　node　was　researched　on　its　working　principle,　function　and　structure　by　theoretical　derivation　and　numerical　simulation.　Then,　the　elastic　and　ultimate　bearing　capacity　of　the　BFW　active　node　were　obtained　by　laboratory　loading　tests.　Finally,　the　bearing　capacity　and　stiffness　of　the　BFW　active　node　were　compared　with　those　of　many　different　types　of　commonly　used　steel　tube　bracings　and　the　applicability　of　the　BFW　active　node　was　evaluated.　The　results　show　that　the　BFW　active　node　has　good　bearing　capacity　and　strong　stiffness.　In　conclusion,　the　BFW　active　node　is　of　simple　structure,　reasonable　stress,　large　bearing　capacity　and　strong　stiffness　which　meet　the　requirements　of　deformation　and　stability　for　braced　excavations.　©　Springer　Nature　Switzerland　AG　2018.

Keyword：

Bolts Bearing capacity Bearings (machine parts) Excavation Geotechnical engineering Stiffness Tubular steel structures

Author Community：

[ 1 ] [Zhang, Mingju]The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Yang, Meng]The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Li, Pengfei]The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Lu, Dechun]The Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing; 100124, China