A　new　semi-rigid　pin　joint　equipped　with　a　simple　assembly　procedure　provides　a　promising　solution　for　the　realization　of　modular　and　rapid　assembly　of　steel-reticulated　shells.　Because　the　novel　joint　can　adapt　to　the　complex　curvature　change　of　the　reticulated　shell,　it　can　be　arranged　in　the　middle　of　the　reticulated　shell　member.　Moreover,　this　type　of　arrangement　can　significantly　reduce　the　number　of　assembled　joints　in　the　reticulated　shell.　The　purpose　of　this　study　was　to　explore　the　anti-rotation　performance　of　semi-rigid　pin　joints　in　the　in-plane　bending　direction　of　a　reticulated　shell.　First,　through　static　loading　experiments,　the　mechanical　properties　of　the　semi-rigid　pin　joints　were　investigated.　The　parameters　considered　in　the　experiment　included　the　diameter　of　the　wing　plate　pin,　thickness　of　the　wing　plate,　and　diameter　of　the　screw　rod.　To　evaluate　the　static　performance　of　the　joint,　the　parameters　of　the　joint,　such　as　the　initial　stiffness,　ultimate　bending　moment,　and　failure　mode,　were　analyzed　in　detail.　The　results　revealed　that　the　semi-rigid　pin　joint　exhibited　good　bending　stiffness　under　in-plane　direction　loads.　Simultaneously,　a　finite　element　model　of　the　semi-rigid　pin　joint　was　established　using　ABAQUS,　and　several　parameters　of　the　joint　were　analyzed　under　the　premise　of　agreement　between　the　test　and　finite　element　model.　Finally,　a　theoretical　analysis　model　was　established　based　on　the　power　function　model　to　predict　the　bending　moment-rotation　angle　(M-Phi)　curves　of　the　semi-rigid　pin　joints　under　different　parameter　combinations.　The　results　proved　that　the　prediction　formula　provided　accurate　results　compared　with　the　experimental　results.