CN204804053U - Spherical node of assembled concrete frame with from reset function - Google Patents

Abstract

The utility model discloses an assembled concrete frame spherical joint with self-resetting function. The beam end is designed to be ellipsoidal and embedded in the column; pull. The connection construction is mainly based on "dry work". Non-structural grouting is carried out around the joints. Considering the embedding of rubber pads at the joints can reduce the damage of components during collisions and ensure the rotational deformation capacity of the joints after the energy-dissipating elements yield. The structure of the utility model has a self-resetting function. By designing the beam end into an ellipsoid shape, the seismic performance of the beam-column joint is effectively improved, and at the same time, it is convenient to install in place.

Description

A prefabricated concrete frame spherical joint with self-resetting function

technical field

The utility model relates to an assembled concrete frame spherical joint with self-resetting function.

Background technique

Prefabricated building is an industrially produced building structure, which has the characteristics of light weight, fast construction, low construction noise, low cost, energy saving, environmental protection, simple process, etc., and has broad development prospects. Research on prefabricated buildings has important practical significance and application value. At present, a prefabricated frame structure system has been proposed, and a new type of lightweight integral building wall panel integrating functions such as prefabricated structure, heat preservation, decoration, waterproof, and fire prevention has been proposed to realize the integration of structure and function. We have applied for a patent for wall self-insulation technology, and have carried out demonstration projects in the Daxihe City Public Construction Project in Yixing, the new factory building of Jiangsu Taiyuan Environmental Protection Technology Co., Ltd., and the Yixing Beibei Garden. But our country has not yet formed a unified and standardized theory and technology system for its technical system. Therefore, it is necessary to conduct systematic theoretical research on the key parts of the prefabricated structure-nodes, so as to provide a theoretical basis for promoting the industrialization of buildings.

In order to speed up the development of prefabrication and assembly technology for construction projects, and improve the integration level of construction industrialization technology. Support the construction of industrialized bases that integrate the entire process of design, production, and construction, select cities with suitable conditions for pilot projects, and accelerate market promotion and application. Both the country and provinces and cities have put forward construction goals. For example, in 2015, the area of prefabricated buildings built in my country will reach 10 million square meters, and the prefabricated assembly rate of single buildings will reach 30%. By 2020, the prefabrication rate of single buildings will reach 60%. For projects using prefabricated buildings, the state will give incentives and preferential tax policies, and give priority to returning support such as wall reform funds and bulk cement funds. In the prefabricated concrete frame structure, the nodes are the key parts connecting beams and columns, which directly affect the overall performance of the frame. At present, the main problems of prefabricated structures are:

Standardized design and modular production of prefabricated concrete structures. This is an inevitable requirement of industrial production, and it involves a series of issues such as the connection method between components, the structure of leakage prevention and heat insulation, and the setting of corresponding connection accessories.

Connection technology of prefabricated components of prefabricated concrete structures. On the premise of ensuring the safety and integrity of the overall structure, the connection structure should be simplified as much as possible. Reduce the impact of uncertainty in construction on structural performance. At the same time, close attention should be paid to the leak-proof, seepage-proof and heat preservation problems of the joints.

Compilation of design, manufacture, construction and acceptance standards for prefabricated concrete structures. On the basis of a solid grasp of the performance of the prefabricated concrete structure, the supporting design method, manufacturing process requirements, construction guidelines and acceptance criteria, etc. should be determined. To promote technology maturity and promotion. Although many construction companies have issued their own local standards. However, due to local limitations and insufficiently systematic and mature standards, the promotion and application of various technologies have been hindered nationwide.

Utility model content

The purpose of the utility model is to provide an assembled concrete frame spherical joint with self-resetting function aiming at the defects in the prior art.

The utility model draws on the structure of ductile joints at home and abroad, analyzes the force characteristics and energy dissipation mechanism of the joints, and proposes a new joint construction idea: the beam end is designed as an ellipsoid embedded in the column; the prestressed tendon channel is reserved in the middle of the prefabricated beam member , tensioning the prestressed tendons during on-site assembly.

Beneficial effects of the utility model: the utility model has a simple and practical structure. Through the spherical structure of the beam end, the beam and column components can generate rigid body rotation ability under the action of an earthquake, and the components themselves are protected from damage. local extrusion.

Description of drawings

Fig. 1 large sample diagram of the node of the utility model;

In Fig. 1, 1-prestressed tendon, 2-rubber pad, 3-mortar layer.

Detailed ways

As shown in Figure 1, it is a spherical joint of assembled concrete frame with self-resetting function. The beam end is designed as an ellipsoid embedded in the column; the prefabricated beam member is reserved in the middle of the prestressed tendon channel, and the prestressed tendon is tensioned during on-site assembly. pull.

The above descriptions are only preferred examples of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of the new protection.

Claims (3)

1. have an assembly concrete framework sphere nodes for Self-resetting function, it is characterized in that, beam-ends is designed to elliposoidal and is embedded in post; In the middle of precast beam unit, reserved presstressed reinforcing steel duct, implements stretch-draw to presstressed reinforcing steel during site assembly; Connection construction, based on " dry operation ", carries out unstructuredness grouting around node, considers to embed rubber cushion blocks in junction, can alleviate damage during member impacts, also can ensure the Rigid Body in Rotation With ability of the dissipative cell surrender back rest.

2. a kind of assembly concrete framework sphere nodes with Self-resetting function as claimed in claim 1; it is characterized in that, the end of beam is designed to elliposoidal, improve the Rigid Body in Rotation With ability of beam; alleviate local compression stress, protect component in earthquake from damage.

3. a kind of assembly concrete framework sphere nodes with Self-resetting function as claimed in claim 1, is characterized in that, installs presstressed reinforcing steel and solve the fixing and problem in place of installation in component work progress in beam.