Based on the investigation and mechanism analysis of distresses in subgrade widening engineerings,the technical treatment principle is determined as controlling uncoordinated deformation between widening subgrade and existing one.

Based on analyzing the mechanism of diseases of the river and creek treatment section in road engineering in soft ground,it is found that the uncoordinated deformation of the subgrade between the section of river and creek soil treatment and the adjoining region is the essential reason that results in the diseases of the road.

The compatibility of deformation may occur on tube thread according to dimension of collar thread, which is helpful in improving the connection quality.

Discussion of the forming mechanism of reflective cracks in pavement from the angle of deformation compatibility;

Phillips's serise/parellel model has been employed, Transverse modulus of squarefibrous composites are analysed from longitudinal deformation compatibility, Then, by virture of relative volume fraction application are discuss for a wide range of fire section.

According to the deformation compatibility relationship between corroded steel bars and concrete,on the basis of the constitutive relationship which can reflect the mechanical properties of corroded steel bars and concrete respectively and the bond-slip constitutive law,a nonlinear differential equation for the beam,expressed in the form of the tensile force(N) o.

Method for calculating settlement of composite ground under rigid foundation considering distortion coordination;

Based on the allowable stress theory,considering the stress characteristics of reinforcing layer before and after reinforcement,and guaranteeing the reinforcing layer and the original structure distortion coordination as a premise,a equation about reinforcing layer thickness section destruction was established before reinforcement to determine the reasonable thickness of reinforcing layer.

According to the deformation coordination of baffle and turbine,the relational equation of rotational speed,fore-and-after pressure difference of boltless baffles and available pressure was con.

Based on Hiley piling formula,and considering the compressing impacts of foundation soil on piles,this paper establishes a formula for penetration of piles according to the principle of deformation coordination.

according to Poisson effect and deformation coordination mechanism of the cross-ply laminates under compression loads,the mean interlaminar shear stress mechanism is analyzed and shear stress analytic model constructed.