2015February 4，The First Engineering Company of Zhejiang Hongxiang Construction Group Co., Ltd. organized the project department and the management personnel of each project department，Visited the first phase II bidding project of Haining Organic Renewal Workers Road Commercial Center，The project is currently in the basement construction phase。
    This project is located on the north side of Changdai Road, Haining City、South side of Workers' Road、East side of Lane 182, Changdai Road、West side of Renmin Road。Developed by Haining Urban Organic Renewal Co., Ltd;Designed by Shanghai Hanfeng Architectural Design Co., Ltd. and Lin Ke (Shanghai) Architectural Design Consulting Co., Ltd;The total construction area is 141477.82 O，The underground construction area is 60067 O；Number of floors、height：The above-ground construction area of Block A in the West District is 9504.26 O，5 floors above ground，The building height is 24.90 meters。The above-ground construction area of Block B in the West District is 6428.83 O，3 floors above ground，The building height is 16.10 meters。The above-ground construction area of Block C in the West District is 66652.87 O，The podium above ground has 4 floors，The building height is 20.70 meters；3#The tower's high-rise main building is an apartment and the hotel has 15 floors，The building height is 58.00 meters；4#The tower's high-rise main building is an apartment and the hotel has 11 floors，The height of the building is 60.05 meters；5#The tower's high-rise main building is an apartment and the hotel has 12 floors，The building height is 53.20 meters；6#The tower's high-rise main building is an apartment and the hotel has 12 floors，The building height is 53.20 meters。 
    The project has three basement floors，The bottom elevation of the pit is -13.90m，The excavation depth of the foundation pit is 13.1m。The red line of the basement edge around the foundation pit is about 2.5~10m，Outside the red line on the north side of the foundation pit is Workers' Road，There is a buried 2m cable at 9m from the basement edge；The east side of the foundation pit is connected to Lot I，It is bounded by the midline of concrete support；The northwest side of the foundation pit is a 1~6-story house，Adopt a shallow foundation with natural foundation，3~10m away from the pit；There is a communication buried under the road on the south side of the foundation pit、Power lines，It is about 7m from the basement edge，Buried 2m deep；The above-mentioned existing buildings and underground pipelines are more sensitive to deformation，All are within the influence area of excavation of foundation pits，It is the focus of the protection of the foundation pit project；
This foundation pit is designed for one year of use；The total circumference of the foundation pit is 460m。
    The enclosure design of this project adopts vertical support structure, and adopts the form of three-shaft cement mixing pile + poured pile enclosure，The horizontal support system adopts the form of enclosure combining two reinforced concrete supports and prestressed fish belly beam steel supports，Locally adopt the form of rotary spray stirring stiffener pile support。
    The construction sequence is：Construction preparation→ three-shaft cement mixing pile、The construction of bored piles → the envelope structure reaches the strength required by the design，The first earthwork was excavated to -2.60m，Construction spray reinforced concrete surface layer→ construction of the first rotary spray stirring stiffener pile→ construction of pressing top beams (including steel support embedded bolts)、The first concrete inner support and the first steel support → layered、Sectional excavation (second excavation to -4.60m，3rd excavation to -6.60m) 2nd rotary spray stirring stiffener pile construction→ 4th excavation to -7.60m，Construction of the second support (including the concrete purlin、Section steel purlin，The second concrete inner support、Steel support) → excavated in layers and sections to the elevation of the bottom of the pit→ manual soil repair and bedding construction→ construction of basement floor、Plain concrete transmission belt → construction - 3-layer roof、Force transmission belt，After the strength meets the design requirements→ the second support → construction - 2-layer roof plate is removed、Force transmission belt，After the strength meets the design requirements→ the first support → construction basement roof→ fill the fence between the outer wall and the outer wall of the structure and compact。