The　previous　soil　spring　model　cannot　describe　the　nonlinear　characteristics　of　soil　in　elastic　stage,　and　there　are　some　shortcomings　in　the　selection　of　soil　spring　parameters　in　some　published　codes.　Meanwhile,　the　literatures　about　the　spring　model　for　pipe　and　silty　clay　interaction　are　rare.　Thus,　a　series　of　pipe-silty　clay　interaction　tests　are　conducted,　and　some　corresponding　experimental　results　are　obtained.　The　effects　of　soil　properties,　pipe　diameter,　and　embedment　depth　on　the　horizontal　resistance　of　soil　are　studied.　Based　on　the　experimental　results,　the　failure　modes　of　soil　are　analysed,　and　a　formula　to　calculate　the　peak　resistance　of　soil　and　the　corresponding　displacement　to　peak　resistance　are　proposed.　Finally,　a　method　to　describe　the　nonlinear　spring　stiffness　coefficient　of　silty　clay　is　recommended.