The storage rack of components shall have sufficient anti-overturning performance.

Weight of single stair plate: ≤ 2T3.

Stacking of cast components Each PC special storage yard consists of four areas, namely, the peripheral and consumable shelves, the stacking area of laminated plates, the stacking area of stairs, and the stacking area of PC wallboards.

The selection and site layout of tower cranes are very different from those before.

Components shall be stacked with a certain binding distance of hooks.

The supporting points of the wallboard shall be set at both ends of the bottom of the wallboard, and the stacking site shall be flat and solid.

The number of stacked layers of precast composite floor should not be more than 6 (according to the design and relevant requirements).

Special attention points in tower crane model selection 1.

The skids should be on the same vertical line and the thickness should be equal.

3PC component stacking yard PC components are unloaded by transport vehicles and stacked in the dedicated PC storage yard of each building.

Construction unit: Jiangsu Nantong Second Construction Group Co., Ltd.

2.

They are classified and stacked according to the specified order.

The construction storage yard is planned in advance and clearly marked with bright yellow paint.

Weight of single shear wall: ≤ 3.97T2.

(2) Stacking of precast composite slabs The number of stacked layers of precast composite slabs should not be more than 6, and the stacking of composite slabs should be stable with 4 or more fulcrums.

Let’s take a look at it through an engineering example.

The components to be lifted first shall be stacked on the outside or upper layer, and the numbered or marked side shall face the channel side.

In addition to padding at both ends, supports shall also be erected or temporarily fixed with supports.

The supports themselves shall be firm and shall not swing and loosen left and right after support.

Both sides of the road shall be set with stereotyped grids and hung with signs, and it is forbidden to cross the line.

When stacking, the distance between adjacent components shall not be less than 500mm.

On the premise of meeting the target of the sales node, the construction of the pure ground warehouse beside the main building should be synchronous or as early as possible.

The pad between layers shall be leveled and compacted.

The prefabrication rate of precast buildings is more than 30%, and the prefabrication assembly rate is more than 50%.

From the fact that Jiangsu Nantong Second Construction Group Co., Ltd., with the large-scale promotion and landing of precast buildings, has also changed its traditional construction technology.

Design unit: Wuxi Chenggui Design Co., Ltd.

When setting tower foundation piles for tower crane foundation, pay attention to the construction distance from the main building and basement engineering piles.
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The laminated plates are stacked with 4 or more fulcrums.

The “Five Heng” health science and technology fine decoration residential project invested by Wuxi Aizhihong Real Estate Co., Ltd.

Construction unit: Wuxi Aizhihong Real Estate Co., Ltd.

The turning radius of PC component driving road shall not be less than 15m, the width of driving road shall not be less than 4m, and the passage shall be connected in a circular way.

The thickness of skids shall be higher than the height of lifting rings.

The main types of precast concrete (PC) components include: precast shear wall panels, precast composite floors, and precast stair boards.

After the PC board is vertically placed into the special support, the two sides are fastened with wooden wedges.

2.

Supervision unit: Shanghai Construction Engineering Consulting Co., Ltd.

Summary of maximum weight of each component 1.

Since all the main buildings are located on the basement, there are post-pouring belts around the main building.

Do not cross the line.

The distance between tower crane and main building shall be ensured to be accessible during installation.

PC component installation unit: Suzhou Xujie Construction Technology Co., Ltd.

The stereotyped grille is set on both sides of the road and signs are hung.

Each stack shall be no more than 3 pieces.

Selection of tower crane model 1.

Use batten as cushion block to ensure that the board surface is not damaged.

PC component production unit: Changzhou Jietong Assembled Construction Co., Ltd.

The skids between components shall be on the same vertical line with the same thickness.

When unloading, it is advisable to enter the roof of the basement at the front of the vehicle to avoid the impact of the whole vehicle on the roof of the basement; The storage site shall be set according to the specification, variety, use position and lifting sequence; The storage site is set within the effective lifting range of the lifting equipment, and the passage is set between the stacks; The components with poor lateral stiffness, high center of gravity and narrow bearing surface shall be placed in place vertically.

3.

Weight of single laminated plate: ≤ 2T2.

4.

Components shall be stacked with a certain binding distance of hooks.

The foundation bearing capacity of the tower crane foundation shall meet the requirements for the use of tower crane machinery.

The stacking position shall be within the slewing radius of the hoisting machinery as far as possible, and the hoisting direction shall be taken into consideration to avoid turning and re-handling during hoisting.

The pad of each layer shall be on a vertical line, and the fulcrum is generally the lifting hole position.

When the main body is more than 5 floors, the site layout shall timely backfill the foundation pit of the underground garage and connect the construction road.

(1) For the stacking of precast shear walls, the PC wallboard shall be placed vertically, and the special support welded by 6 # and 10 # channel steel shall be used.

(3) Stacking of precast stair boards The stair flight shall be stacked in horizontal layers and by models (left and right).

Plastic Nail Plate

3.

The components shall be stacked in sequence according to the model and lifting sequence.

and constructed by Jiangsu Nantong Second Construction Group Co., Ltd.

The plane layout of the construction site is arranged for the first floor and below the fifth floor.

The bottom pad shall be full length.

Prefabrication rate profile Taking the first batch of 6 buildings as an example, The statistical summary of precast concrete (PC) component types and component schematic diagram are as follows: (1) Summary of precast vertical components (2) Summary of precast horizontal components (3) Summary of precast stair components Basic requirements for site transportation road and storage yard setting 1.

2.

The support shall be provided by the PC manufacturer.

Stacked components shall be separated by skids.

4.

The stacking of components should be kept stable, and the bottom should be placed with skids.

Each PC component storage yard is prepared according to 1/3 of the building number area; The preferred storage yard should avoid the impact and reinforcement on the basement, and minimize the tower operator’s sight and lifting time for installation; The soil layer at the base of the storage yard shall be hardened and open drainage ditches shall be set around it.

The impact of cab, tower crane frame, front and rear boom on scaffold, protruding building and construction elevator during disassembly shall be removed smoothly.

(4) Stacking of peripheral materials and consumable shelves PC special containers for turnover materials and consumables are welded with angle steel L100X10, and horizontally laid with wooden boards for isolation.

When stacking, the distance between adjacent components shall not be less than 200mm.