Precast components of precast projects are usually hoisted by tower cranes.

Considering that the bay window is long, the stress mode of bottom sleeve reinforcement requires more sleeve reinforcement embedded, which increases the difficulty of on-site alignment installation on the one hand, and the grouting quality also affects the stress safety of components on the other hand.

The design scheme has a decisive impact on the project cost, and the construction cost of precast buildings is higher than that of traditional buildings.

The reasonable stress of precast bay window and how to install it are the difficulties.

If there are heavy components such as precast columns and precast wallboards, the model of tower cranes can only be increased, which will have a great impact on the construction cost.

Zhongtian Architectural Design Institute officially launched the Shaoxing yellow rice wine town project with an investment of more than 30 billion yuan in April 2020.

In order to increase sales, Party A hopes to obtain as much reward area as possible.

On the premise of not significantly increasing the cost, the assembly rate score of nearly 20 points is obtained, which effectively controls the cost increment of precast construction.

Loop Box

However, heavy components also increase the difficulty of installation and affect the construction quality and efficiency.

Precast building is the main direction of the transformation and upgrading of the construction industry.

The project has a large volume and many house types.

Whether the connection node structure between precast components and cast-in-situ parts is reasonable directly affects the project quality and the difficulty of production and construction.

Taking block 3E as an example, the planned land area of this block is 38831.8 square meters and the construction area is 47963 square meters.

As a special architectural design module, assembly design needs to cooperate with architectural design upward and construction requirements downward.

Compared with the traditional manual drawing, it can reduce the modification time by at least 80%, and effectively avoid the impact on the construction progress.

The precast exterior wall components of the project are generally heavy.

In order to avoid the above problems, during the deepening design, the design team adopted segmented and hollow technologies for some overweight exterior walls, reduced the maximum components from 4.5 tons to 2.8 tons, and optimized the component storage yard in combination with the layout of tower crane yard to ensure the smooth hoisting of components.

On the premise of not affecting the overall effect of the facade, the standardization of the precast exterior wall is realized as far as possible by adjusting the position of the precast exterior wall, fine-tuning the size of the window opening, optimizing the length of the shear wall and other measures.

In order to meet the needs of facade modeling, some house types of the project adopt the design of large face wide bay window in the guest restaurant.

Zhongtian Architectural Design Institute achieved the precast design task of the project with deep technical accumulation and good market reputation.

Therefore, the design team added the cast-in-situ column on the beam in the middle of the bay window, divided the precast bay window into two sections, and set torsional reinforcement to be anchored into the wall columns on both sides to transfer the stress, which not only reduces the weight of components and reduces the embedded reinforcement, but also ensures the safety of force transmission and improves the convenience of construction.

Finally, 1368 m3 of area without capacity is rewarded, and they are concentrated in the foreign house area that is easier to construct.

Precast components need to be produced in advance, so the precision of deepening design is very high.

Since 2013, Zhongtian holding group has taken the lead in the industrial layout in the field of precast construction nationwide, and is committed to realizing the precast construction and service mode of the integration of engineering project design, construction, operation and maintenance driven by digital chain..

The development of the industry urgently needs to change the passive assembly design method which only aims to meet the specifications.

The precast design team of Zhongtian Architectural Design Institute cooperated with Party A to conduct field research on the technologies of key evaluation items in the early stage, fully communicated with experts in the special review meeting of precast scheme and the special technical report meeting of Shaoxing precast building evaluation and interpretation, and finally passed the identification of multiple evaluation items, such as ALC internal wall pipeline integration, integrated kitchen and bathroom standard and BIM Technology, And the calculation of the proportion of precast horizontal components can not be included in the Chinese pitched roof of the row house.

At the same time, the design team also retains the convenience of batch adjustment for the subsequent possible building or hardbound adjustment, so as to realize rapid modification without omission.

The project complies with the local policy requirements on Incentive area, so the precast exterior wall technology is adopted.

Only with a comprehensive understanding of relevant policies and norms and in-depth research on the process technology of each evaluation item, can we adjust measures to local conditions, select the best evaluation item and reduce the cost increment caused by assembly construction as far as possible.

All of them are residential buildings, which are composed of 10 Western-style houses and 7 townhouses.

All individual buildings are constructed by assembly.

After the on-site construction, the drawing quality and later service efficiency have also been unanimously recognized by all parties.

In the initial construction scheme, the incentive area of the split exterior wall is less than 800 m3.

The project consists of multiple blocks, covering residential, commercial, school and other business forms.

Based on the actual situation of the project, from the perspective of Party A and on the premise of meeting the specifications, Zhongtian architectural design institute makes in-depth exploration from the aspects of expanding the incentive area, reducing the construction cost and improving the construction quality, so as to make the precast construction develop its strengths and avoid its weaknesses, and realize the win-win situation of Party A, design and construction.

▲ more high-quality products, focusing on how to maximize the benefits of “search architecture” precast architectural design for Party A.

The design team, combined with the characteristics of the project, comprehensively arranges the components of each block, and uses the relevant self-developed procedures and plug-ins to draw and disassemble the detailed drawing of components into three parts: structural size, hardbound points and detail nodes, so as to ensure the accuracy and standardization of drawings.

Shaoxing City has strict identification of assembly evaluation items, and some common application technologies in other regions may not pass the identification.

Considering the great impact of architectural scheme design on the project, the cast design team of Zhongtian Architectural Design Institute will intervene in advance and cooperate fully and deeply with the architectural scheme design team in the project scheme design stage.

Through the optimization in the design stage, the zero influence on the selection and position of tower crane is realized, which not only reduces the construction cost, but also ensures the construction efficiency.

▼ reserve the column on the beam.

Under the expectation that the sales unit price exceeds 20000, It will add more than 30 million sales to the project.