Notice of RetractionCountermeasures of Payment Risk in Construction Contract
The contractor lacks of identification ability of risks in construction contracts, which result in loopholes and risks that could be avoid in the signing and implementation process of the instruction contract. Due to lack of identification and prevention of these risks, lead to the losses of the contractors in the project construction courses. To the contractor, the significant risk is the owner's payment risks. It is a universal phenomenon there exist plenty of owners in arrears with project payment or repudiate payment, which result not only from insufficient management of contractors, but also closely related to the credit of owners. This paper firstly elaborate contract management of construction project, and then analyze the risk of construction contract and put emphasize on employer payment risk. Finally, point out that employer payment bond is an effective method of risk transferring in preventing employer arrear, to ensure the profitability and construction can be carried through smoothly.
Surety Bonds for Construction Contracts
This book presents the complex field of suretyship for construction contracts by describing and analyzing each element of the surety bonding process in basic terms. Russell unravels the suretyship puzzle through numerous examples and extended case studies drawn from real-world experience. Sample bond forms and surety documents, as well as an extensive glossary of key terms, serve to further illustrate each step of the bonding process.
Centrifuge modelling of effects of shield tunnels on existing tunnels in soft clay
With the rapid development of the subway network,the phenomena of shield tunnels going across the adjacent tunnels are becoming more and more common.The interaction between shield tunneling and nearby tunnels is more complicated than the ordinary shield tunneling in intact soil strata.Based on the project of Shanghai Bund Passage crossing Metro Line 2,the method of centrifuge modeling together with the field measurement is employed to study the effects shield tunneling on nearby strata and existing tunnels.In centrifugal model tests,the effects simulation techniques considering the unloading of excavation,ground loss and grouting are developed to analyze the longitudinal settlement of the shield tunnel and the existing tunnel induced by the shield tunneling.Besides,the deformation distribution and settlement curves of the existing tunnels during shield construction are studied by using the monitoring data.