On April 18, 2024, the new project of Huaishang Mingju East District undertaken by Bengbu Wanshun Construction and Installation Engineering Co., Ltd. successfully held the "Owner Open Day" and Project Quality and Safety On-site Observation and Promotion Meeting of the construction site in Bengbu City, Anhui Province. The observation meeting was hosted by the Bengbu Municipal Housing and Urban-Rural Development Bureau and the Bengbu Municipal Construction Management Office, and the representatives of the city's development, construction, supervision and other units and some owner representatives observed the standardization practices such as the quality and safety of the project, the construction technology and the acceptance of sub-households, and praised the benchmarking project level of private enterprises in the construction industry.
The construction site "Owner's Open Day" and the project quality and safety on-site observation and promotion meeting
One
Safety and civilization
A series of standardized, tooled and stereotyped facilities are set up at the construction site to realize the management of "people-oriented, environmental protection and energy saving, quality excellence, and safe development", and to realize the safety protection of "four mouths and five borders".
1
Image of the entrance to the construction site
The image of the gate of the construction site meets the CI requirements of the enterprise, neat and generous, and the height of the closed wall meets the main road section of the urban area not less than 2.5m, and the general road section is not less than 1.8m.
Entrance image
The guard room adopts a box-type board room, supporting a roller turnstile, complete security and management system, and strictly implements the real-name management of entry and exit;
Real-name channel and nine cards and one picture
2
Hardening of the construction site
The construction roads and main sites are all hardened, and the drainage system is set up to ensure that the transportation and construction operations in the site are civilized and orderly, the bearing capacity of the road surface meets the construction requirements, and the drainage is smooth.
Hardening of the construction site
3
Pre-class evaluation area
A pre-shift evaluation platform is set up at the main passage of the construction area, warning slogans are posted, and the workers accept the pre-shift work arrangements and safety technical disclosures every day.
Pre-class lecture and evaluation platform
Pre-class commentary
4
Vehicle management facilities
Automatic car washing tanks are installed at appropriate locations at the entrances and exits of the construction area to ensure that vehicles enter and exit the construction site are cleaned, and sedimentation tanks are set up to prevent mud from polluting the environment.
Automatic car wash tank and weighbridge
5
Fugitive dust control facilities
A spray dust removal system is set up around the construction site fence, a fog cannon dust removal is set up in the construction area, and an environmental detection system is equipped with real-time monitoring to ensure that the dust control meets the requirements.
Sprinkler, fog cannon and environmental monitoring facilities
6
Construction site culture billboard
Set up a construction site culture publicity area in the construction safety area to carry out the publicity and construction of party building culture and construction site culture, improve the quality of all employees, and help the high-standard construction of the project.
Construction site culture publicity board
7
Workers' coffee break area
Outside the fall radius of the building and the coverage area of the tower crane, a workers' coffee break room is set up, equipped with seats, water dispensers, ash barrels and other facilities, and mobile toilets are set up in the field and floors to provide convenience for workers' work.
Workers' coffee room
8
Safety enclosure protection
In the dangerous area of the construction site and the fall radius area of the building, the stereotyped protective railing is used for safety enclosure, and the safety officer conducts daily inspection and management, and it is strictly forbidden to cross.
Construction site safety fence protection
Elevator shafts, staircases, reserved openings, passage openings and floor edges and other "four mouths and five edges" are provided with stereotyped railings, covers or other protective facilities to prevent injuries caused by workers or items falling.
Elevator shaft and hole safety enclosure protection
The temporary power distribution box, tower crane and other equipment and facilities at the construction site are equipped with all-steel structure protective sheds, warning slogans, double-layer protection at the top, and the supporting side doors can be locked, so that the overall assembly is convenient and safe to use.
Distribution box and tower crane protective shed
9
Hoistway construction hoist
The innovative application of hoistway construction hoist, through the installation and use of construction hoist in the indoor hoistway, is not affected by the climate and the working environment is improved, which greatly improves work efficiency and civilized construction.
Hoistway construction hoist
10
Safe passage
The construction site is set up with a stereotyped protection safety channel, the whole steel assembly, the top is set up with double-layer protection to ensure the safety of the construction site, and the safety and civilization and other publicity signs are posted on both sides of the channel to enhance the safety awareness of all employees.
Safe access to the construction site
The entrance and exit of the building and construction elevator are provided with stereotyped protection channels, the length is greater than the radius of free fall from high altitude, the width and height meet the requirements of the project, and when the building height exceeds 24m, the top is provided with double-layer protection.
Safe passage for building and construction elevator entrances and exits
11
Model experience area
A quality model area is set up in the safety area of the construction site, and a movable quality model is set up for the key construction processes, which provides reference and basis for construction operation and quality management through the model guidance, and helps the high-quality construction of the project.
Quality model area
A safety experience area is set up in the safety area of the construction site, and a safety experience project is set up for the key risk factors that are prone to casualties on the construction site, so as to enhance the safety awareness of all employees by personally feeling the physical state of the safety accident when the safety accident occurs.
Safe Experience Zone
A VR safety experience hall and a smart construction site exhibition hall are set up in the safety area of the construction site, and intelligent construction methods are actively applied to improve the quality and safety management of the project.
Smart construction site exhibition hall
Two
Quality excellence
At the beginning of the project, it was clear to ensure the quality objectives of the high-quality project "Pearl Cup" in Bengbu City and the "Huangshan Cup" of the high-quality project in Anhui Province, and during the construction of the first floor, the model area of the key construction technology was made simultaneously, and the quality excellence was achieved through the implementation of "model guidance and process control".
1
Prototype leads the way
(1) Masonry construction technology model
It focuses on the quality points that should be controlled in the whole process of masonry construction, including: reverse masonry at the bottom, staggered joint building of blocks, straight and uniform ash joints, solid brick inlay, horse tooth chauffeur and structural column setting, hanging net at the junction of different substrates, corner protection setting, top oblique masonry and window sill pressing and other processes, supplemented by identification prompts, to achieve the effect of "model guidance".
Masonry construction technology model
(2) Plastering coating construction process model
It focuses on the quality points that should be controlled in the whole process of plastering coating construction, including: wall ash cake, wall punching, wall slotting and hanging net at the junction of different substrates, plastering "three times survival", putty and latex paint layered construction and other processes, supplemented by identification prompts, to achieve the effect of "model guidance".
Plastering coating construction process model
(3) Line pipe embedded construction technology model
It focuses on the quality points that should be controlled in the whole process of the embedded construction of the secondary structure line pipe, including: positioning elastic line, slotting and cleaning, line pipe laying, mortar filling and hanging net, etc., supplemented by identification prompts to achieve the effect of "model guidance".
Wire pipe embedded construction technology model
(4) Model of construction technology for sealing screw holes in external walls
It focuses on the quality points that should be controlled in the whole process of exterior wall screw hole plugging construction, including: rubber plugging, outer waterproof mortar plugging and waterproof coating brushing, inner foaming agent and waterproof mortar plugging and other processes, supplemented by identification prompts, to achieve the effect of "model guidance".
Model of exterior wall screw hole plugging construction technology
(5) Demonstration model of actual measurement
It focuses on the operation points of the main body, masonry, plastering and putty and other stages of the measured quantity, including: the position of the ruler of verticality and levelness, the process of data on the wall, etc., supplemented by identification prompts, to achieve the effect of "model guidance".
The actual measurement and actual quantity display sample
(6) Toilet construction technology model
It focuses on the quality points that should be controlled by various specialties in toilet construction, including: waterproofing, ground, water supply and drainage facilities and electrical facilities and other detailed practices, supplemented by identification prompts, to achieve the effect of "model guidance".
Toilet construction technology model
(8) Kitchen construction technology model
It focuses on the quality points that should be controlled by various specialties in kitchen construction, including: waterproof and moisture-proof, ground, water supply and drainage facilities and electrical facilities and other detailed practices, supplemented by identification prompts, to achieve the effect of "model guidance".
Kitchen construction process model
(9) Mechanical and electrical installation process model
It focuses on the display of fire alarm and water supply system, smoke prevention and ventilation system, weak current security system and other mechanical and electrical systems and materials and equipment, supplemented by identification prompts, to achieve the effect of "model guidance".
Mechanical and electrical installation process model
2
process control
(1) Underground waterproofing project
Underground engineering focuses on the control of waterproof detail node practice, cushion, brick fetal film and pile head yin and yang angle and other detail nodes do semi-circular treatment, brush waterproof reinforcement layer, pave the additional layer of waterproof membrane, waterproof protective layer pouring plastering surface outside the light inside.
Waterproof detail node manufacturing method
The innovative application of water-stopping fish scale nets in the construction joints replaces the traditional chiseling in the later stage, which not only saves labor costs, but also has good rough surface forming quality, and firmly combines the old and new concrete to prevent leakage.
Effect of water-stopping fish scale netting
(2) Reinforcement engineering
Before the construction of the steel bar, the pay-off positioning is carried out in strict accordance with the drawings to ensure that the number and spacing of the steel bar are consistent, the construction specification of the steel bar binding, and the innovative use of PVC casing for the temporary protection of the column reinforcement, which effectively prevents the steel bar from being exposed for a long time and causes pollution or rust, and ensures the quality of the physical project.
Positioning and binding of steel bars and temporary protection
Apply a number of steel bar spacing and protective layer thickness control measures such as ladder bars, protective layer snap rings, finished stools, etc., to ensure that the thickness of the steel bar protective layer meets the requirements of the specification.
Control of rebar spacing and cover thickness
The construction site of the reinforcement is paved with a horse road, which effectively avoids the damage to the reinforcement skeleton caused by the direct arrival of the finished surface of the reinforcement, and the reinforcing ribs are set at the yin and yang corners and the opening, which effectively prevents the common problem of easy cracking at the stress concentration place.
Steel bars anti-trampling stool, steel radial bars
(3) Formwork engineering
The innovative application of pull-piece aluminum mold reinforcement system saves accessories and is simple to operate, which greatly improves the construction efficiency, anti-leakage effect and project quality.
Pull-piece aluminum mold reinforcement system
The formwork support adopts the disc buckle scaffold support system, which eliminates the backward technology and improves the safety construction level, and innovates and applies a number of new technologies such as the vertical formwork positioning reinforcer, which not only effectively locates and reinforces the vertical formwork, but also further ensures the thickness of the steel bar protective layer.
Disc buckle support system, formwork positioning reinforcer
(4) Concrete works
The application of slab thickness controller to control the thickness of concrete pouring floor slabs, and the application of different grades of concrete pouring at beam-column nodes to intercept airbags, convenient construction and turnover use.
Concrete quality control "small process big effect"
The chiseling treatment at the construction joint ensures that the joint surface of the old and new concrete is tight and firm, and the water-stopping and anti-squeezing of the wading room such as the toilet adopts a synchronous one-time molding construction with the main structure, which not only avoids the hidden danger of leakage caused by the existence of construction joints in the later stage, but also saves the cost of the secondary construction in the later stage.
The concrete construction joints are chiseled, and the toilet is formed at one time
After the final setting of concrete, the sprinkling maintenance system is strictly implemented, the daily data on the wall can be traced, the acceptance of concrete engineering implements the "measured amount + data on the wall", the quality management responsibility is assigned to the person, and the key indicators should meet the allowable deviation.
Concrete curing and acceptance inspection
(5) Mechanical and electrical engineering
The comprehensive pipeline layout of the basement of the mechanical and electrical engineering adopts BIM deepening design, which discovers and solves the collision of various mechanical and electrical professional pipelines in advance, reasonably arranges the location and direction of equipment and pipelines, minimizes the space occupied by the pipeline, and improves the quality of mechanical and electrical installation and the net height of the building space.
Basement integrated pipeline layout
In the main stage, the focus is on the reserved pre-embedded construction, and the casing pre-embedding innovation adopts the finished water-stop section to replace the traditional formwork plugging and filling process, which not only optimizes the process to save costs, but also effectively prevents and controls the common problem of leakage;
Mechanical and electrical installation is reserved for pre-embedding