Quality Control of Drainage Board Construction Process
Abstract: Focus on how to meet the design quality control from the perspective of the dimple drainage board for sale construction technology, and the precautions for wholesale low cost storage and drainage sheet construction.
Keywords: wholesale low cost storage and drainage sheet, construction technology, quality control, precautions.
Located in the Kemen Port on the south bank of Luoyuan Bay on the northeast coast of Fujian Province, there is a berth of 200,000 t class unloading berths and a berth of 50,000 t class berths. The total length of the berths with two berths is 667 m. At the same time, the construction of rear dikes, land storage yards and other supporting engineering facilities; the entire project is divided into I and II areas of the project, the land area of the entire project is formed by sand filling, site backfilling, rear mountain parting and foundation treatment Plastic dimple drainage board for sale are inserted, and the rest of the foundation treatment content is implemented in stages according to the scope of Zone I and Zone II. In the land formation and foundation treatment project of the Kemen operation area of Fuzhou Port, the drainage plate part of the land area is mainly controlled in detail and adopting feasible arrangements. The construction process of the wholesale low cost storage and drainage sheet is comprehensively summarized, and the construction process is appropriate. No, it is directly related to the drainage effect of the plastic dimple drainage board manufacturers.
1. Construction preparation
(1) Paving the lower gravel cushion: Before laying the plastic wholesale storage and drainage sheet, lay a 25cm thick gravel cushion on the flat ground to provide a better operation site for the plastic wholesale low cost storage and drainage sheet.
(2) Positioning: According to the plane position of the measurement stakeout, the inserter is in place, the guide frame verticality and depth mark is adjusted, and the sleeve is aligned with the pile position.
(3) Wearing boots: the plastic dimple drainage board for sale is inserted from the hollow sleeve, and the end is passed through the tube boots so that the plastic dimple drainage board manufacturers are tightly connected and fixed to the boot so that the soil can be prevented from entering the sleeve during the insertion process. Tube; first insert and start the winch, vibrate the casing and plastic wholesale low cost storage and drainage sheet into the soil, and shut down after design depth.
(4) Lifting: start the hoist and lift the casing. Due to the extrusion of the soil, the pipe and the plastic dimple drainage board manufacturers remain in the soil together; after the casing is raised on the ground, the plastic wholesale storage and drainage sheet are cut at 30cm on the gravel cushion. The plug-in machine can be shifted.
(5) Paving the upper gravel cushion: After the acceptance of the plastic dimple drainage board manufacturers of one section, the gravel material should be used to fill the hole formed around the board during the piling, and the upper 25cm thick gravel cushion should be paved as soon as possible. , leveling and compacting.
2. Requirements for laying gravel cushion
The gravel cushion is a lateral drainage channel for the plastic dimple drainage board for sale treatment section, which also contributes to the diffusion of stress. The gravel cushion is 50cm thick and is laid on the upper and lower layers. The mud content of the gravel is not more than 5%, and the maximum particle size is not more than 8cm. To prevent the loss of gravel, the drainage of the cushion is strengthened. The bag is used for the face protection; before the construction of the gravel cushion, the drainage ditch must be excavated to reduce the groundwater level, and the drainage should be ensured between the cushion and the drainage ditch; when the gravel cushion is constructed, manual construction with light mechanical paving is adopted to avoid the surface of the soft soil is excessively disturbed and causes the gravel to mix with the sludge, which affects the drainage effect of the cushion.
3. Construction technical requirements and construction technology
3.1 Construction technical requirements
(1) During the construction of plastic wholesale storage and drainage sheet, the requirements of the industry standard “Construction Rules for Plastic wholesale low cost storage and drainage sheet” (JTJ/T256-96) shall be strictly observed.
(2) During the process of setting up the plastic dimple drainage board for sale, kinking, breaking, tearing of the filter membrane and pollution are strictly prohibited.
(3) Prevent mud and debris from entering the casing and block the water supply passage during construction. Once it is found, it must be removed in time. The plastic wholesale storage and drainage sheet that penetrates the foundation should be the whole board. When the length of the footage is not enough, it is not allowed to use the lap continuous plastic wholesale storage and drainage sheet to ensure the drainage performance after the plastic dimple drainage board manufacturers are installed.
(4) The top of the plastic dimple drainage board manufacturers should extend into the gravel cushion no less than 30cm so that it can penetrate with the gravel cushion to ensure smooth drainage and protect it to prevent damage to machinery and vehicles when entering and leaving.
3.2 Design requirements
(1) After filling the sand to the design elevation, lay a 30cm working cushion layer to carry out the operation of laying plastic dimple drainage board manufacturers on the land. Before the plastic drainage version is installed, the area should be measured, and the board position should be determined and marked to ensure the construction. The accuracy of the area.
(2) The distance between the plastic wholesale storage and drainage sheet in the yard area is 1.2m, square layout, the base spacing of the I-zone engineering bucket turbine is 1.0m, square layout, the plastic wholesale low cost storage and drainage sheet is made of C-type board, and the rest is made of high-performance dimple drainage board for sale.
(3) The wholesale low cost storage and drainage sheet application process are determined by the site according to the site soil condition, mechanical equipment, capacity, etc., and the driving power is hydraulic. If the hydraulic type is difficult to operate, it can be changed to vibrating type; in the vibrating application process The observation of the surrounding dikes and the front slope of the stacking should be strengthened; the depth of application must strictly meet the design requirements.
(4) Detailed construction records should be submitted during construction, including board depth, board position, verticality, exposed length, return length, number of returning boards, number of hits and position. The specific control standards are as follows: The mark deviation is 70mm, the return tape length is less than 500mm (the number of roots shall not exceed 5% of the total number of holes to be set, and the insertion point shall be added when it is greater than 1.5m); the deviation of the exposed length: 0, +200mm (the number of roots is less than 3%) The verticality is less than or equal to 1.5% (the number of roots is less than 10%); the plane position is less than or equal to 100 mm (the number of roots is less than 10%).
(5) In the process of applying a plastic dimple drainage board manufacturers, it is strictly forbidden to have kinks, breakage, and tearing of the filter membrane. If it appears, it should be inserted near the insertion point.
(6) After the plastic wholesale storage and drainage sheet is set up, it should be checked and accepted in time. After passing the test, the cavity formed around the board is filled with sand and sand, and the plastic wholesale low cost storage and drainage sheet head are placed in the sand cushion layer.
(7) Plastic wholesale low cost storage and drainage sheet near the surrounding dike and riprap squeezing area: plastic dimple drainage board for sale should be inserted into the embankment or riprap near the blasting silt and riprap area. Side slab dikes shall be applied from the boundary of the insert to the yard.
(8) The test panel test should be carried out before the formal construction of the plastic wholesale storage and drainage sheet to determine the construction process and construction parameters.
3.3 Construction process
(1) Main materials: During the construction process, it should be checked frequently whether the plastic wholesale storage and drainage sheet jacket film is intact;
(2) Mechanical equipment: There are two kinds of equipment for designing plastic dimple drainage board manufacturers: 1 crawler pile driver; 2 gantry type inserter; static or vibrating equipment capable of driving into design depth is required, the hammer is not available Hit or water.
(3) Construction process: measuring stakeout → ground cleaning and adjusting leveling paving → laying argillaceous stratification layer → laying lower layer gravel cushion → laying pile position → playing plastic dimple drainage board for sale → grit gravel and filling pit → laying upper layer Sand gravel cushion → paving geotextile → embedding settlement observation board.
4. Construction quality control should pay attention to matters
(1) The casing tube and the pile tip should be tightly combined to prevent the sludge from entering the inside of the casing, thereby increasing the resistance to the plastic drainage and causing the belt to return. Therefore, the sludge entering the casing should be removed in time.
(2) During construction, inspections should be intensified to ensure that the board spacing, verticality, length of the board, and length of the belt are in compliance with the specifications. Otherwise, it should be re-played. The position of the pile and the original pile are not more than 15% of the board spacing.
(3) The strike is carried out from the slope protection road to the center of the road. The number of designs is set for each row. After the row is completed, the machine is moved forward to the endpoint, then the machine is traversed, and the frame is returned to avoid blocking the drainage channel.
(4) The sludge from the extubation should be removed in time to keep the gravel cushion clean so as not to block the drainage channel.
(5) The reserved length of the top of the plastic dimple drainage board for sale shall not be less than 30cm. After the installation is completed, it shall be bent and buried in the gravel cushion in time.
(6) After all the plastic dimple drainage board manufacturers have been applied, lay the upper layer of gravel, and press the end of the drainage board to the outside of the route and flatten it on it, and cover it with sand.
(7) It is strictly forbidden to drive the plastic dimple drainage board for sale section that has been set up to prevent the plastic wholesale storage and drainage sheet from being damaged.
(8) Construction records should be made one by one during construction.
The optimized design scheme, reasonable construction technology, qualified construction materials, and strict construction management are decisive factors for the whole process of construction and drainage and the quality control of the construction. The formation and foundation of the 4# and 5# berths in the Kemen operation area In the treatment project, strict implementation of the engineering quality industry acceptance criteria are controlled throughout the construction process to ensure the quality of the project.