Lead pipe shed-steel arch frame-foot lock bolt integrated mechanics model design method and model

The invention discloses a lead pipe shed-steel arch frame-foot lock bolt integrated mechanics model design method and a model. The method comprises the following steps of building an integrated mechanics analysis model of a tunnel early support structure according to an actual construction condition; according to a current construction state and an appointed calculation method, determining an action load value, and performing structural internal force and deformation calculation; judging whether each typical physical quantity exceeds an allowed value or not, and if the each typical physical quantity exceeds the allowed value, enhancing corresponding support structure design parameters according to the physical quantities not meeting the requirements, and performing return and re-calculation, or otherwise, gradually reducing the corresponding support structure design parameters, performing return for re-calculation, and until the typical physical quantities obtained under the current support parameter conditio