The　swelling⁃shrinkage　deformation　of　the　main　girder　of　the　integral　abutment　bridge　caused　by　the　ambient　temperature　leads　to　the　horizontal　reciprocating　motion　of　the　abutment　and　the　interaction　between　the　abutment⁃soil　and　the　pile⁃soil.　In　this　paper,　based　on　the　case　study　of　an　integral　abutment　bridge,　a　quasi⁃static　test　of　low⁃cycle　reciprocating　displacement　load　of　integral　abutment⁃H⁃shaped　steel　pile⁃soil　system　based　on　diurnal　temperature　and　seasonal　temperature　deformation　effect　was　carried　out　to　analyze　the　hysteretic　behavior,　skeleton　curve　and　abutment　angle　of　the　specimens.　The　results　show　that　the　annual　hysteretic　curve　of　the　specimen　can　be　regarded　as　the　super⁃　position　of　the　hysteretic　curves　of　seasonal　temperature　and　diurnal　temperature　effects.　From　the　point　of　view　of　sea⁃　sonal　temperature　effect,　affected　by　the　temperature　rise　in　spring　and　summer,　the　MTS　horizontal　force　increases　rap⁃　idly　at　first.　With　subsequent　continuous　temperature　rise,　the　horizontal　force　growth　slows　down.　Under　the　influence　of　continuous　temperature　drop　in　summer　and　autumn,　autumn　and　winter,　the　horizontal　force　decreases　sharply　at　first,　before　decreasing　slowly　as　the　temperature　continues　to　drop.　Affected　by　the　temperature　rise　in　winter　and　spring,　the　horizontal　force　first　increases　sharply　before　slowing　down.　Its　growth　rate　is　similar　to　that　of　the　first　tem⁃　perature　rise　in　spring　and　summer.　Due　to　the　cumulative　effect　of　the　soil　behind　the　abutment,　the　horizontal　force　is　even　greater.　From　the　point　of　view　of　the　effect　of　diurnal　temperature,　when　the　ambient　temperature　is　high　(in　sum⁃　mer),　the　effect　of　temperature　drop　at　night　on　the　interaction　of　the　system　is　greater　than　that　of　temperature　rise　dur⁃　ing　the　daytime.　When　the　ambient　temperature　is　low　(in　winter),　the　effect　of　daytime　temperature　rise　on　the　system　interaction　is　greater　than　that　of　nighttime　temperature　drop.　From　the　perspective　of　skeleton　curve,　due　to　the　influ⁃　ence　of　medium　and　long⁃term　ambient　temperature,　a　process　of　nonlinear　to　linear　transformation　exists　in　the　interac⁃　tion　of　integral　abutment⁃pile⁃soil　system.　In　the　initial　stage　of　loading,　the　rotation　angle　of　the　abutment　is　basically　consistent　with　the　change　law　of　loading　displacement.　With　the　change　of　ambient　temperature,　the　two　gradually　devi⁃　ate.　Especially　in　the　first　quarter　of　the　next　year,　the　two　have　produced　a　more　obvious　positive　direction　deviation.　©　2023　Science　Press.　All　rights　reserved.