Component stacking specification.

During construction, a 150mm high water retaining sill shall be set at the upper opening of the outer wall, so as to control the leakage from the source.

What is so special about such a seemingly ordinary commercial housing project that it can stand out and become a district level observation site in Jinshan District? Now let’s invite the watchman to come with you to find out! When you enter the construction site, you can immediately see the safety passage arranged in a standardized atmosphere.

The composite floor is divided into two aspects: the connection between floors and the connection between floors and cast-in-place parts.

For the design of precast stairs, the connections at both ends of the stairs are set as sliding bearings, and the joints are filled with polystyrene board and mortar.

Among them, the connection point between floors adopts post cast concrete, and the bandwidth of post cast slab is divided into 200mm and 300mm.

II.

On the morning of May 24, the construction site Jun participated in the exchange and observation meeting on the theme of “innovating science and technology, assembling construction technology and leading the development of the era of construction industrialization” in Jinshan District.

After the hoisting of PC components, plugging materials shall be used for plugging.

1、 BIM application and design deepening before construction, the project department will jointly review the whole component combination drawings with the owner, the designer and various professional units for many times, and integrate the opinions into the construction drawings through the designer to avoid rework in the later stage.

▲ laminated plates are stacked, separated by sleepers in the middle, no more than six floors ▲ the shear wall uses intensive stacking frame, and the base of the stacking frame is equipped with rubber to protect components, which also saves the site ▲ stairs are stacked, separated by sleepers in the middle, no more than four floors ▲ IV.

3、 Mobilization acceptance of precast components in order to ensure the smooth mobilization of components, the project department designed the width and turning radius of the on-site transportation road, and checked the load and height limit of the off-site route.

Because there are so many highlights, you can list some of the most representative displays on the construction site: ▲ cast construction method building ▲ cast material display ▲ precast component semi-finished product display ▲ precast component production process ▲ PC sling ▲ PC sling ▲ precast sample display of operation layer ▲ reinforcement binding display of operation layer ▲ precast wallboard hoisting display ▲ masonry sample display ▲ electromechanical installation sample ▲ various construction schemes have been made into QR codes, According to Chen Jingkai, the project manager, this precast project not only has good quality, but also has fast construction speed, which can complete one floor of 450 M2 every five days.

The construction team has made many efforts from the initial BIM deepening design to the quality control in the construction process.

Click on the Shanghai construction site above to pay attention to us.

It is also important to select a good component supplier.

The selection of component processing plant has done a good job in the preliminary design, and the next step is to make components.

According to the provisions of Shanghai dgj08-2117-2012 specification, grouting shall be carried out from the lower opening by grouting method.

The project department also follows the regulations to make full-time inspectors stand by and retain image data for each component.

In order to ensure the bearing capacity of the pavement in the basement area, the project department also reinforced the basement roof according to the actual situation of the site after being signed and approved by the design unit.

The upper and lower layers of the exterior wall are usually the main potential leakage parts.

A simulated grouting model is also set up at the observation site to operate “grouting” on site, so that everyone can have an intuitive understanding..

According to statistics, the total number of visitors reached more than 400! What is the origin of observing the construction site? The project name of the observation site in this area is: 06-04 project of jss3-0402 unit in Jinshan Industrial Zone, which is undertaken by China Construction Eighth Engineering Bureau Co., Ltd.

The acceptance of components entering the site shall also be in strict accordance with the design documents, and the joint acceptance of the supervisor and the owner shall be organized.

The project department uses the sealing mortar with high strength, non shrinkage and good deformation resistance.

At the scene of the event, Zhu Wenzhong, deputy director of the construction safety supervision station in Jinshan District, Shanghai, and vice president of the construction safety supervision station of Jinshan District, Jinshan District, vice president and general manager of the operation and management department, Yi Wen Yong, and the eight party Bureau of East China sub bureau Party Secretary Wang Lifeng attended the observation.

The factory adopts the fully automatic vibration formwork with centralized control and steam maintenance to ensure the quality of the components produced.

Magnetic Box Adapter

Two post reinforcement are set at the bottom of 200mm post cast slab strip, and four post reinforcement are set at the bottom of 300mm post cast slab strip; The connection point between the floor slab and the cast-in-place part adopts the design of throwing out hook reinforcement ≥ 280mm, and throwing out straight reinforcement in the falling plate area.

Further inside, there are dozens of construction model displays.

It is used around the PC component to strengthen the integrity of the grouting construction.

In the deepening design of precast shear wall joints, the project department has given three connection modes of wall joints: “I”, “L” and “t”, and added the design of opening and closing connecting reinforcement in the cast-in-situ area of edge components.

In terms of precast slab hoisting, the project department uses many auxiliary “artifact”.

PC construction quality process control.

The components used in the project are produced by China Construction aviation construction industry development Co., Ltd.

For example, in the transfer floor, the reinforcement locator is used to ensure the accurate positioning of reinforcement, the precast wallboard is fixed with inclined support rod to ensure that the initial adjustment is roughly vertical, the adjustable inclined support bolt rod is used for temporary fixation, and the short rod inclined support is installed immediately after the long rod inclined support is fixed, etc.

It covers an area of 36912.93 ㎡, with a total construction area of 105132 ㎡.

It is composed of 10 precast houses with 15-18 floors.

The structure of the residential building is cast frame cast-in-situ shear wall, and the assembly rate is 28%.

M14 bolts are embedded in the cast-in-situ ladder beam, and the bolt opening is blocked with mortar; The design of sliding bearing and embedded bolt makes the on-site installation more convenient.