ugg Günstig Subway station monitoring and analysi

2n2sale160ad

Subway station monitoring and analysis of deep excavation

Three air pavilion near the Newport Seafood Restaurant) settlement, tilting and cracks. Underground pipeline deposition】『l. Below the level of the main structure of the foundation pit subsidence displacement and adjacent buildings to do the monitoring and analysis. Monitoring sites in and around the building pit deformation monitoring arrangement shown in Figure 1. Note: 0Qx】 x} body arsenic inclinometer hole; △ PD1D28 pile top displacement of measurement points; △ J1 match building Street Settlement observation points. Figure 1 Point North Tucheng excavation monitoring station floor plan 4.2 Monitoring and Analysis (1) horizontal displacement of foundation pit enclosure envelope horizontal displacement measured by 060mmPVC ramps. 8 around foundation laid along the inclinometer hole,ugg Günstig, retaining wall inclinometer tube and the same depth. Inclinometer tube pre-fixed to the envelope on the pile reinforcement cage,ugg boots, and with the steel cage in concrete pouring. Inclinometer tubes arranged in the wall, I asked 422 * Municipal Technology Volume 25 inside and near the excavation direction. Servo accelerometer test equipment of Foundation inclinometer t21. QX3 below to the west pit hole inclinometer example to analyze the results of its monitoring. Figure 2, Figure 3.30350051015 depth fm Note: +6 l5 months to 3 layers at the end of excavation; ten days in June 3o excavation in the end; 202 530 +7 13 floor Chuan. Figure 2 inclinometer different construction stages of a deep hole horizontal displacement curve of the date of Figure 3 inclinometer hole horizontal displacement time curve according to Figure 2,uggs, the deformation curve of pile foundation pit lanes form a large bow. The peak is usually located above the excavation surface within 1.0-2.0m, and with the excavation depth increases. Maximum horizontal displacement of points along down. Reason for this phenomenon is due to anchor set. Usually in the excavation to the bottom elevation of a cable before installing the cable channel, in the process, the anchor will pull most of the following on a cable and its commitment to passive earth pressure. Cable to the channel really work, the Foundation has produced a large pile retaining arch out of shape. Stiffness of the large envelope pile on further prestressing anchor has been difficult to change the horizontal deformation of pile foundation pit the direction of excavation in the subsequent process, the envelope further in the direction toward the pit deformation. Figure 3 shows, a layered excavation pit, horizontal displacement of retaining pile of soil with each layer of the excavation, showing a stage of \Floor construction is complete, retaining the level of displacement piles became stable. (2) Building a settlement with the DSZ Precision Level 2. Second level of technical requirements by country of Surveying building settlement monitoring points. Construction of the foundation within the four buildings were laid out 22 test points. The general characteristics of building settlement: settlement of ancillary structures such as stairs and other locations than the corresponding settlement of the main structure: the structure of the main settlement near the foundation is greater than the side away from the pit side of the settlement value. 5 Conclusion Tucheng subway station through the construction of the North practice. Can come to the following understanding: (1) and other excavation methods comparison, the prestressed cable interference of less excavation, where applicable, geological conditions, can guarantee the stability of excavation sex; but there are also complex and construction operations, the stress imposed by a timely fashion. And the strand can not be recycled construction waste created after the other shortcomings. (2) Comparison of precipitation within the pit, pit dewatering can reduce external interference with the construction, but also to get to the good rainfall effect,, but will cause a larger surface area of the consolidation settlement. The environmental impact of large pit outside. (3) Monitoring is to ensure that the key to deep foundation construction safety. Monitoring data must be accurate, and timely feedback on the monitoring results to relevant information, provide the basis for the construction decisions. (4) The floor construction is complete, FOUNDATION PIT curve has stabilized. Because the floor on both sides of the envelope will be linked into a whole. Effective resistance of the foundation soil on both sides of the lateral pressure. Floor is completed, construction of the station less affected by the surrounding environment, basically does not change.

相关的主题文章：

ugg boots New belt conveyor rollers _690

moncler sale Project price contract for small and

uggs Shanghai Water Resources Analysis and Sustain