【正文】 went out on loan from 31 heavy industry group for hoisting two largetonnage crane machines. Construction of steel structure of main tower is by sections, each segment the weight shown in the table below, we can see the difficulty of construction. Large sections of the Tower weightIn ten Tang Heng bridge watch during our first so directly contact with the bridge in construction State. This allows us to have a deeper feeling. First, as a bridge with the landscape, its design was more brilliant, two tilt Bridge viewed from the distance and rely on each other when the main tower structure, turned out to appear in the scene, we will issue voice of praise. We walked to the nearby looking at more than 80 metres from the main tower, it39。s tall and stands in contrast to our small and. I was for the first time this kind of bridgebuilding technology, both design and the construction of tracks! : the first task of the day is to go to Hangzhou subway tunnel excavation site. We walked about a kilometer from the tunnel into the distance to the under construction section. Because only a temporary erection of the access tunnel is a narrow way, so we are basically does not go without interruption all the way. We never made much. Today39。s second task is to watch the new intersection of Tang Lu Jingfang road connection of underground space engineering. Underground space connection project of xintang Lu Jingfang road intersection in new pond road intersects with Fengqi road junction road, Fengqi road along the new road direction setting. Construction of engineering structures using opencut method. Works for the underground twolayer doubleor twostory threeBay rectangular frame structure, retaining structure with diaphragm wall, wall thickness 800mm. Support standard first line of concrete support + 4 steel support, first concrete support the shield section + 4 steel support (the 5th double steel backing for support). Main standard pit depth 16m depth of end well in Foundation pit of . Subsidiary structure in total 9 entrance and 3 Wind Pavilion. According to this there is a project of urban underground space engineering features and difficulties. I are as follows: 1 the pipeline: the works surrounding the main gas, electricity, light current, water supply and other important pipelines, pipeline Manager Basic and parallel to the pit, part of a pipeline crossing the pit needs to be protected. 2, pit monitoring: this works on both sides of the Community traffic, and many surrounding buildings, five farmers 39。 markets in particular distance near pit, strictly controlling deformation of Foundation pit by the Department for this project, the monitoring of Foundation pit. 3, unearthed in the pit: as the project is located in the city center, excavation of large earthmoving required when shipping, this is subject to reasonable arrangements planned and coordinated work on the outskirts of unearthed. 4, traffic: the project covering 7 traffic organization during construction, the project has been pleted the main structure of a traffic organization and Fengqi road traffic organization work. Transport organizations directly related to the project39。s construction progress.: the first task of the day is to go to Hangzhou subway tunnel excavation site. We walked about a kilometer from the tunnel into the distance to the under construction section. Because only a temporary erection of the access tunnel is a narrow way, so we are basically does not go without interruption all the way. We never made much. Today39。s second task is to watch the new intersection of Tang Lu Jingfang road connection of underground space engineering. Underground space connection project of xintang Lu Jingfang road intersection in new pond road intersects with Fengqi road junction road, Fengqi road along the new road direction setting. Construction of engineering structures using opencut method. Works for the underground twolayer doubleor twostory threeBay rectangular frame structure, retaining structure with diaphragm wall, wall thickness 800mm. Support standard first line of concrete support + 4 steel support, first concrete support the shield section + 4 steel support (the 5th double steel backing for support). Main standard pit depth 16m depth of end well in Foundation pit of . Subsidiary structure in total 9 entrance and 3 Wind Pavilion. According to this there is a project of urban underground space engineering features and difficulties. I are as follows: 1 the pipeline: the works surrounding the main gas, electricity, light current, water supply and other important pipelines, pipeline Manager Basic and parallel to the pit, part of a pipeline crossing the pit needs to be protected. 2, pit monitoring: this works on both sides of the Community traffic, and many surrounding buildings, five farmers 39。 markets in particular distance near pit, strictly controlling deformation of Foundation pit by the Department for this project, the monitoring of Foundation pit. 3, unearthed in the pit: as the project is located in the city center, excavation of large earthmoving required when shipping, this is subject to reasonable arrangements planned and coordinated work on the outskirts of unearthed. 4, traffic: the project covering 7 traffic organization during construction, the project has been pleted the main structure of a traffic organization and Fengqi road traffic organization work. Transport organizations directly related to the project39。s construction progress.During the onsite visit, we came up with some questions or deep or shallow. Q1: when we ask how to retaining of Foundation pit is dug out. Staff explained that it was out of the House a digging machine 60~80cm wide, dug at the same time need to be sprayed with a special mud, when this prevents digging mud wall collapsed. Q2: horizontal bracing of Foundation pit wall bid until the last cut you? that will pit the upper fill dirt