(3) The stacking steps of precast stair slabs shall be stacked horizontally in layers and models (left and right).

Let’s take a look through an engineering example.

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

Single weight of laminated plate: ≤ 2t2.

the design unit: Wuxi Chenggui Design Co., Ltd PC component manufacturer of the liability company: Changzhou Jietong precast construction Co., Ltd.

The laminated plates shall be stacked with 4 or more fulcrums.

The distance between tower crane and main building shall be ensured It can be easily installed.

During disassembly, the cab, tower crane frame, front and rear boom, etc.

The stacking position shall be within the rotation radius of the installed lifting machinery as far as possible, and the hoisting direction shall be taken into account to avoid turning and re handling during hoisting.

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

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

The construction unit: Wuxi aizhihong Real Estate Co., Ltd.

4 stacking of cast components each PC special storage yard is composed of four areas, including peripheral material and consumable shelves, laminated plate stacking area, stair stacking area and PC wallboard stacking area.

The number of stacking layers of precast composite floor slab shall not be greater than 6 (according to the design and relevant requirements).

Lifting Insert

After PC wallboards are placed vertically in the special support, both sides shall be pressed with wooden wedges.

(1) For the stacking of precast shear walls, PC wallboards shall be placed vertically and welded with 6#, 10# channel steel.

PC component installer: Suzhou Xujie Construction Technology Co., Ltd.

2.

Stereotyped grids are set on both sides of the road and signs are hung.

The number of stacking layers of precast laminated floors should not be greater than 6, and the laminated plates should be stacked stably with 4 or more fulcrums.

can be dismantled smoothly.

the supervision unit: Shanghai Construction Engineering Consulting Co., Ltd.

Single weight of stair plate: ≤ 2t3.

Because all the main buildings are located on the basement, there are settlement post cast strips around the main building.

The layout of the construction site is 1 Foundation and below 5 floors.

The lowest skid shall be full-length.

Selection of tower crane model 1.

The “wuheng” health technology fine decoration residential project invested by Wuxi aizhihong Real Estate Co., Ltd.

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

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

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

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

2.

Under the condition of meeting the sales node objectives, the pure basement beside the main building shall be constructed synchronously or as soon as possible.

Stereotyped grids and signs shall be set on both sides of the road to prohibit crossing the line.

Each stack shall not exceed 3 pieces.

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

prefabrication rate overview, taking the first batch of 6 buildings as an example, The statistical summary and schematic diagram of precast concrete (PC) component types 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.

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

3pc component stacking yard PC components are unloaded by transport vehicles and stacked in the PC special storage yard of each building, classified and stacked according to the specified sequence.

When setting tower foundation piles for tower crane foundation, pay attention to the construction distance from the main building and basement engineering piles..

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

3.

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

Wooden blocks shall be used as cushion blocks to ensure that the plate surface is not damaged.

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

4.

Special points for attention in tower crane selection 1.

The components shall be stacked with cushion wood Certain hook binding spacing.

The skid between layers shall be leveled and padded.

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

The support shall be provided by PC manufacturer.

Each PC component storage yard shall be prepared according to 1 / 3 of the building area; the preferred storage yard shall avoid the impact and reinforcement on the basement, and minimize the tower company’s line of sight and hoisting time during installation; the base soil layer of the storage yard shall be hardened and open drainage ditches shall be set around.

Do not cross the line.

The stacked components shall be separated by cushion wood, the thickness of the cushion wood shall be higher than the height of the lifting ring, and the cushion wood between components shall be on the same vertical line, and the thickness shall be equal.

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

Summary of the maximum weight of each component 1.

(4) Stacking of peripheral materials and consumables shelves.

Single weight of shear wall: ≤ 3.97t2.

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

2 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.

3.

The components should be stacked with a certain hook binding spacing, and the spacing between adjacent components should not be less than 500mm.

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

The components shall be stacked stably, and the cushion wood shall be placed at the bottom.

(2) Stacking of precast laminated plates.

and constructed by Jiangsu Nantong Second Construction Group Co., Ltd, Main precast concrete (PC) component types include: Precast shear wallboard, precast laminated floor slab and precast stair slab.

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

The special container for PC turnover materials and consumables is welded by angle steel l100x10 and separated by planks horizontally.