What is steel sheet pile support structure

What is steel sheet pile support structure? The strict use and monitoring arrangement and frequency of steel sheet piles in construction cannot be ignored. Below, experts from Guangyu Foundation Engineering will interpret the arrangement and frequency of steel sheet pile monitoring for everyone:
1, During the construction of the main factory building column foundation, only the support system is monitored. After research, one control point is set every 5m from the top of the steel sheet pile, and the coordinates of the control points are measured using instruments as the initial coordinate value before excavation of the foundation pit. After the deployment of monitoring points is completed, the original values are measured twice to reduce errors. The frequency of foundation pit monitoring is adjusted according to the progress of earthwork excavation and changes in the foundation pit. During the excavation process of the foundation pit, the excavation frequency shall not be less than 2 times per day, and after excavation is completed, the excavation frequency shall not be less than 1 time per day. If there is a sudden change in displacement at the top of the observed steel sheet pile, the number of observations should be appropriately increased. When the observed displacement tends to stabilize, the observation interval can be extended.
2, In the construction of equipment foundation support, it is mainly necessary to observe the horizontal displacement and settlement of the column cap foundation on the 46-52 lines of the CD axis, set a benchmark initial data, and monitor the frequency of the column cap foundation once/d before excavation and twice/d after excavation. According to the monitoring of the column foundation, the displacement is relatively small during excavation of the first layer, and relatively large during excavation of the second layer (the foundation pit is excavated in two stages). After excavation, the column foundation is basically in a stable state, and there is slight displacement during continuous rainfall. Monitor until the foundation backfilling is completed.
1. To improve the safety and reliability of deep foundation pit support, it is necessary to calculate the theoretical data of the depth of Larsen steel sheet pile insertion, and verify the strength and stability of the support pile to ensure the reliability of deep foundation pit construction.
2. In the construction of sinking retaining piles, strict adherence to pile sinking standards is required. Corner piles must be used at the four corners of the foundation pit to maximize the leakage prevention performance of small toothed Larsen piles and ensure the smooth progress of the next process.
3. The 250 * 250H steel is used to implement the enclosure pile, and the surrounding enclosure is reinforced. The distance and number of diagonal slant support are added according to the specific situation. The site is equipped with a compaction grouting machine to stop leakage at individual leakage points, so as to achieve the enclosure of Larsen steel sheet piles. The technical parameters meet the specification requirements.
4. Strictly follow the construction specifications of the foundation pit to implement the construction of each process. The excavated soil should be stacked beyond 10m to 15m (1 time the pile length), and the soil should be leveled to minimize the lateral pressure of the soil on the retaining piles, enhance the safety factor of the enclosure, and immediately pump out the accumulated water in the pit. When excavating at the grassroots level, the excavation machinery must strictly follow the standard operation. Which countries can produce steel sheet piles to minimize the unit force area of the excavation machinery, prevent impact loads, damage the retaining piles, and ensure the safety of the foundation pit.