steel framework
8.Methods: According to the feature of ear defection,1? 135 cases of moderate congenitial microtia were treated by different methods,including cartilage tube plasty steel wire elevation in 198 cases,free composite ear transplantation from the other ear in 72 cases and partial ear reconstruction with soft tissue skin expander together with autogenous rib cartilage framework in 865 cases.
9.Through analyzing the structure of open caisson, and according to sinking stress principle, the paper introduced in the open caisson construction process sinking, correcting error, survey control as well as peculiar circumstance processing technical measure, such as in open caisson construction the inner-mold for sanding, framework supporting and steel binding, and concrete casting; in open caisson sinking-control the sand in edge foot inner-mold, sand-pumping sinking, and pressure hydraulic monitor breaking and pressure-blowing sinking by air pressure blower etc.


