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Construction technology and quality control of bored piles This paper mainly introduces the construction technology of bored piles and the solutions to some common quality problems. The technology includes the following processes: 1. site preparation; 2. pile casing; 3. rig installation; 4. slurry preparation; 5. hole forming; 6. hole forming inspection; 7. hole cleaning; 8. fabrication and installation of reinforcement cage; 9. transportation and lifting of reinforcement cage in place; 10. grouting equipment; 11. underwater concrete pouring; 12. surface sounding and guiding of pouring concrete -
Construction Quality Control of Large Diameter Bored Pile The foundation of Songhua River cable-stayed bridge is cast-in-place bored piles. There are 26 piles for the main tower of the main bridge on the south bank, with a pile diameter of 2.0m and a pile length of 70m; There are 4 piles for the transition pier of the main bridge, with a diameter of 2.0m and a length of 45m; There are 6 piles at the junction pier of the main bridge and the approach bridge, with a pile diameter of 2.0m and a pile length of 53m; There are 20 piles in 5 piers of the approach bridge, with a pile diameter of 2.0m and a pile length of 50m; There are 10 piles in the abutment -
Technology and quality control of impact pile, long spiral bored pile and CFG pile Including the construction technology of percussion drilling cast-in-place pile and treatment of disease, CFG pile construction technology, long spiral quality control technology, and analysis of problems of bored pile -
Construction technology and quality control of bored pile and CFG pile ppt version (86 pages in total) Bored cast-in-place pile, as a form of pile foundation, has been widely used in engineering with the construction of expressway, high-speed railway and high-rise buildings, because it has no noise, no vibration, little impact on the environment, the maximum diameter is 3~4m, and the bearing capacity is large. However, since most of the construction of bored cast-in-place pile is carried out underwater, the construction process cannot be observed, and it is difficult to excavate after the pile is formed -
Quality control of jacked pile engineering The application of static pressure prestressed pipe pile is more and more extensive. This paper analyzes and discusses the construction quality control of static pressure pipe pile. -
Quality Control of Bored Pile The construction of bored piles is mostly carried out underwater, so the construction process cannot be observed, and the excavation acceptance cannot be carried out after the pile is formed. Any problem in any link of the construction will directly affect the quality and progress of the whole project, and even cause huge economic losses and adverse social impact to investors. Therefore, the foundation construction team is required to implement the construction technical measures -
On Quality Control of Bored Pile Construction The key points of quality control in bored pile construction -
Quality control of hole forming of super long bored cast-in-place pile Bored cast-in-place pile is a common foundation form for sluice and bridge structures. For ultra long bored pile, once the hole collapse, pile hole deflection and other accidents are caused due to geological conditions or improper construction control, it is difficult to deal with them, which affects the quality of pile forming and forms a potential safety hazard. Combined with engineering practice, this paper probes into the effective methods for the construction quality control of super long bored piles. -
Quality Control of Manual Digging Pile in Construction The large-diameter hand dug pile is widely used in the construction field. Its advantages are relatively economical, intuitive, quality assurance, simple operation of construction machines and tools, small occupation of construction site, no impact on surrounding buildings, full deployment, shorter construction period, lower cost, etc -
Quality Control of CFG Pile in Long Spiral Construction The construction quality control points of CFG pile for long spiral hole forming pipe pumping mixture construction, CFG pile generally has three pile forming methods: vibration pipe sinking pile forming, long spiral drilling pile forming, long spiral drilling pipe pumping mixture pile forming, of which the latter is the most commonly used construction method -
Quality control of construction supervision of bored pile Quality control of construction supervision of bored pile -
Construction method and quality control of CFG pile This document is about the construction method and quality control of CFG pile, including the basis for preparation, project overview, main construction technical scheme, etc. It is detailed and can be downloaded for reference by netizens. -
Construction quality control of bored pile Abstract: Bored cast-in-place pile is a concealed project, which is prone to quality accidents during construction. This paper analyzes the causes of hole wall collapse, necking and other accidents encountered in the construction of bored cast-in-place piles with engineering examples, and discusses the key points of quality control in the process of pile forming. -
Construction quality control of cement mixing pile 1. All construction machinery shall be numbered, and the site technician, drilling rig leader, site principal, cement mixing pile length, pile spacing, construction process and mechanical parameters shall be made into signs and hung on the obvious place of the drilling rig to ensure that the personnel are in place and the responsibility is assigned to each person. -
On project quality control This document is about project quality control, and its contents are only for reference. Thank you for your participation -
JDG pipe laying and quality control This article is sorted out according to the online data and acceptance specifications, hoping to help improve the quality of electrical construction -
Discussion on quality control of concrete Nowadays, reinforced concrete plays an increasingly important role in engineering, and its quality is directly related to the quality of the project. Therefore, the quality control of reinforced concrete has become the top priority of the quality management of construction projects. This paper emphatically analyzes various quality problems that may occur in reinforced concrete engineering, lists the phenomenon, causes and prevention measures of various problems, and -
Quality control of a construction procedure This document is about the quality control of a construction process, including the content of process quality control, the setting of quality control points, the inspection of process quality, the pre control of construction project quality, etc. It is accurate in design, detailed in content, and worth downloading. -
Discussion on quality control of concrete The concrete structure occupies a large proportion in the construction engineering and plays an absolute role in the safety, reliability and durability of the structure. Therefore, the supervision engineer is very important to the quality control of concrete. -
Talking about the quality control of concrete Introduction: Concrete structure accounts for a large proportion in construction projects. The supervision engineer is very important to the quality control of concrete. Concrete, quality control of concrete. Key words: concrete, quality control -
Construction technology and quality control of bored pile Bored cast-in-place piles have been widely used in coastal cities and urban reconstruction at present, but it is difficult to check the quality of piles after they are built because they are concealed works. Based on the author's experience in the construction of dozens of bored pile projects in the past ten years, this paper discusses how to fully attach importance to, carefully construct, strengthen quality management and other issues in each construction link, and hopes to communicate with peers -
Key points for quality control of bored pile construction Introduce key points of construction control -
Whole process management and quality control of bored pile The construction of houses and substations often encounter the foundation treatment form of bored piles, whose quality, duration, etc. directly affect the next construction of houses or structural support foundations. This paper introduces the construction technology, quality control and quality standards of bored piles in detail. -
Summary of Static Pressure Pile Supervision and Quality Control in Construction Process The project is located in the east of Xin'an Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, with a building area of 41487 ㎡. -
Quality control during construction of bored cast-in-place pile During the pouring process, waste concrete and sundries shall not be thrown at will, and vehicles shall be used to transport the waste materials to the designated place for landfill. During hole filling, the slurry overflowing from the hole shall be led to the sedimentation tank by digging a drainage ditch. After the slurry is cleared, it can be discharged into the designated channel, and shall not be discharged arbitrarily. -
Construction technology and quality control of bored pile Bored cast-in-place pile is widely used in highway bridge construction and other engineering fields due to its strong adaptability, moderate cost, simple construction and other characteristics. Bored cast-in-place pile is a concealed project. Most of the drilling and concrete pouring are carried out underwater. There are many factors that affect the construction quality of bored cast-in-place pile. Any minor mistake may lead to quality problems of cast-in-place pile -
Quality control of cement mixing pile for strengthening soft foundation at bridge head Abstract: This paper summarizes the construction process and quality control measures of cement mixing piles in the soft subgrade section of the highway bridge based on the construction technology of the fifth section of Kaifeng Tongxu Expressway. -
Key points of construction quality control of bored cast-in-place pile Abstract: Bored cast-in-place pile is a kind of pile foundation widely used in construction projects at present. The pile diameter is generally more than 500MM, the pile length is generally 40-50M, the strength grade of concrete is generally not lower than C20, and the strength grade of C30 is often used -
Construction quality control technology of bored pile Shenzhen Reservoir Aqueduct is located at the upstream of Dawang Bridge of Shenzhen Reservoir, which is the link between the two water conveyance tunnels on the east and west sides of the reservoir. The total length of the aqueduct is 530m, the design net section is 4.2mx4.2m, and the design water carrying capacity is 24m3/s. The superstructure is composed of 6-span 48m and 5-span 45m prestressed concrete simply supported beams. The substructure has 12 trough piers (abutments) in total, -
Key points of supervision quality control in the construction process of bored pile According to the geographical location of the project and the adjacent engineering geological exploration report, the upper part of the foundation is a gray mucky soil layer with a thickness of 3~8m; The middle and upper parts are silt and fine sand, the coarseness changes from coarse to fine from bottom to top, and the thickness varies from 40 to 50m; The lower part is gravel type medium coarse sand layer (Quaternary bottom gravel layer), with a thickness of 6~13m; The bottom is solidified tuffaceous silt -
Key points of construction quality control of rotary drilling cast-in-place pile This document is the key points for the construction quality control of rotary drilling cast-in-place pile, including: Contents: I. Construction process and quality control points of rotary drilling cast-in-place pile II. Quality control requirements III, Attached table: relevant pictures of engineering pile construction photos, etc. -
Construction quality control of large diameter bored pile 1. During construction, the slurry surface in the pile casing shall be more than 1.0m higher than the groundwater level. When affected by the fluctuation of water level, the slurry surface shall be more than 1.5m higher than the highest water level. 2. In the process of hole cleaning, the slurry shall be continuously replaced until the concrete is poured. 3. Before pouring concrete, the slurry density within 500mm of the hole bottom should be less than 1.25g/cm3, and the sand content -
Quality control measures for supervision of bored pile engineering After analyzing the problems that may occur during the construction of cast-in-place piles, corresponding construction quality standards, acceptance implementation plans and disclosure are formulated. It mainly includes the disclosure of survey and setting out plan, construction material quality control measure plan, hole forming equipment operation and hole forming quality control plan, reinforcement cage fabrication and hoisting plan, concrete pouring plan, and finished product protection plan. -
Construction scheme and quality control of pile cap foundation General layout, quality assurance measures and main construction methods of foundation works -
Discussion on quality control of manual hole digging pile construction Guide reading: before digging holes, at least one shaft circle retaining wall shall be made to control the pile center and elevation: if the pile center in the design drawing is on the axis, the distance deviation between the center of the first shaft circle and the design axis shall not be more than 20mm, and the top surface shall be 150-200mm higher than the site, so as to determine the pile position and control the elevation line of the reinforcement cage; The first section of retaining wall shall be 100 thicker than the following retaining wall -
Construction technology and quality control of post grouting of bored piles According to the factors such as stratum nature, pile length, bearing capacity increase and pile use function (compression resistance and uplift resistance), post grouting of cast-in-place piles can be conducted by pile bottom grouting, pile side grouting and pile bottom compound grouting. This technology is applicable to slurry wall drill, bored pile and dry operation drill, bored pile. -
Construction technology and quality control of vibro replacement gravel pile Vibro replacement gravel pile is a method of rapidly strengthening soft foundation by using locally vibrated gravel in the foundation. In recent years, it has also been widely used in the reinforcement and treatment of high-rise building foundation. It has the advantages of reliable technology, simple equipment, easy to master operation technology, simple and fast construction, short construction period, no cement or steel, and significantly improved foundation bearing capacity after reinforcement -
CFG pile construction technology and quality control measures The most commonly used pile forming construction methods of CFG pile include vibrating pipe sinking and grouting pile forming, long spiral drilling, and pipe pumping mixture grouting pile forming. This paper explains the construction process of CFG pile and the common construction quality problems and control measures of pile forming.
