Based on the traditional interior decoration of houses, this paper analyzes the design method of electromechanical pipeline reservation and embedding in precast components of precast shear wall houses in China, and puts forward the prospect of electromechanical design to realize interior decoration industrialization.

The following is an analysis and summary of the reserved and embedded design of electrical pipelines in precast shear wall residential buildings in this form.

Due to the special form of precast buildings, the internal pipeline integration is particularly important.

Text: with the acceleration of national housing industrialization, a large number of precast houses have been completed and put into use.

The application of interior decoration industrialization technology is largely restricted by the form of residential delivery.

In recent years, with the acceleration of national housing industrialization, a large number of precast shear wall houses have been completed and put into use.

Introduction precast house, as the name suggests, is a house assembled on site with factory precast components.

In this form, the current conventional practice of electrical system design and pipeline laying is basically followed: the electrical pipeline is poured into the structure.

If the connection is not good, it will affect the beauty of the building at least, and will damage the wall and beam slab of the structure at most.

Fig.

This kind of building has the advantages of fast construction speed, saving labor cost and improving construction quality to a great extent.

set on the precast wall need to reserve the junction box in advance in the design stage.

3.

The sockets, switches, weak current equipment, fire-fighting equipment, etc.

In order to ensure that the equipment points in the precast parts are complete and avoid damaging the precast components during chiseling and cutting on the construction site, the reserved holes and embedded parts required by each system should be integrated on one drawing to facilitate leak detection and defect filling, as well as to check whether there are conflicts and problems between the equipment points of each system Whether the pipeline paths coincide, and the problems can be found and solved in time in the design stage.

The thickness of the cast-in-situ layer of the laminated plate shall not only consider the structural safety, but also consider the routing requirements.

The reservation and embedment of electrical pipelines and wire pipes account for a very large proportion in Electromechanical.

1 reserved method of junction box in laminated floor 👇👇👇 Click the picture below to view the details.

The precast shear wall residence refers to the precast residence whose structural load-bearing components are mainly borne by reinforced concrete walls.

Therefore, the reservation and embedding on the precast structure is the key to the current electrical design.

There are many comprehensive electrical professional systems, and each system has a separate set of drawings.

In public areas, lamps with acousto-optic control switch on the lamp cap shall be selected as far as possible, and ceiling installation mode shall be selected for acousto-optic alarm and emergency broadcasting as far as possible.

1.

The commonly used technologies of precast shear wall residence mainly include: structural industrialization technologies such as thermal insulation and decoration integrated concrete exterior wall slab, precast staircase, precast balcony slab and laminated floor slab, as well as interior industrialization technologies such as integral bathroom, integral kitchen, raised floor and drainage on the same floor.

Bubble Panel Pad

According to the principle of shortest pipeline, the socket close to the ground can be connected with the pipeline in the cast-in-situ layer downward; The switch close to the floor can be connected with the pipeline in the cast-in-situ layer upward..

Pipeline reservation # equipment pipelines shall be comprehensively designed to reduce plane crossing.

The specific location of the junction box should be preliminarily positioned by the electrical discipline first, and then accurately positioned by the structural discipline.

2.

Optimizing the layout of pipelines and reducing pipeline crossing is the key of electrical design.

Point reservation # in order to facilitate and standardize the fabrication of components, the box and junction box reserved in the precast components shall be accurately and standardized positioned on the precast components according to the modulus of the precast components.

In addition, the lighting fixtures, fire detectors and other equipment in the laminated floor need to reserve deep junction boxes to connect with the pipelines in the cast-in-situ layer of the laminated floor (see Figure 1 for details).

The prefabrication personnel shall accurately locate the wires, boxes and boxes in each precast slab and wall according to the drawings and unified standards.

For the residence with blank delivery, the wire pipe is basically cast in the structure: the wire pipe and wire box in the precast wall are cast in the factory at one time with the structure; When the laminated floor slab is adopted, the horizontal wire pipe is laid in the cast-in-situ laminated layer of the floor slab, which still needs to be completed in the field wet operation.

There are generally two ways to connect the pipeline in the precast wall and the pipeline in the cast-in-situ layer: upward connection and downward connection.

If the pipeline laying is crossed, the thickness of the cast-in-situ layer shall be at least 80mm.

When the horizontal pipeline must be concealed, it shall be laid in the cast-in-situ layer of the laminated floor, and the comprehensive design of three-dimensional pipeline shall be carried out by various means including BIM Technology, so as to avoid the phenomenon of cross laying of multiple electrical pipelines in the same place.

In addition, concealed pipelines passing through steel beams can be reduced by means of open laying in the electric shaft.

4.

The designer shall accurately locate the equipment pipeline in the design stage and generate the BIM model together with the civil components and provide it to the precast component factory.

Reasonable design can reduce the thickness of structural layer and reduce the project cost.

The design of electrical pipeline reservation and embedding of precast residence # the electrical equipment pipeline in the blank room is installed in place.

In precast buildings with concrete structure, electrical vertical pipelines should be laid centrally to meet the needs of maintenance and replacement; In steel structure cast buildings, the vertical pipelines that do not need to pass through steel beams should be laid centrally, and the vertical pipelines that must pass through steel beams should be laid dispersedly to ensure the safety of the structure.

At present, China’s housing is still dominated by traditional decoration, and the industrialized technology of interior decoration has not been fully popularized.

In addition, steel structure cast buildings should try to avoid vertical pipelines crossing steel beams and arranging pipelines that need to be laid from the top plate to the wall at the place with beams.

The key technology of precast residential electricity is to reserve and embed the pipelines in the precast structure.

Here, the standard 86 junction box is appropriate.

Pipeline connection # the connection between pipelines is very important, which is mainly divided into the connection between precast components and the connection between precast components and pipelines in the cast-in-situ layer.