UA83616U - Method for arrangement of joints of reinforced-concrete constructions - Google Patents

Abstract

Method for arrangement of joints of reinforced-concrete constructions includes preliminary preparation of large-dimension wall reinforced-concrete constructions, mounting those at the object, reinforcement of vertical straight, Γ-, T-, cross-like and at any angle γ joints, units, connections. At least part of vertical ends of the articles has depressions not less than 1/10 of thickness, semi-round or at angle, or in trapezium or other form, with arranged at least in the lower and/or the upper zones loop and/or rod extensions made of steel armature, the wall panels are connected with the ends or with other facets to each other, with formation of cavities with round, many-sided or with any other cross sections, where needed, according to calculations, metal rods of frames are placed, or high-strength wire, those go through loop extensions and/or floor and go to the basement plate and/or through horizontal joints to the upper floor, with following laying and compaction of concrete mix and building-in and connection of pre-fabricated panels to flat and volumetric multi-element joints and units with rigid construction of high-rise composite buildings and constructions.

Description

The useful model belongs to construction, namely to the joints, nodes and connections of prefabricated prefabricated reinforced concrete structures that form the load-bearing vertical part of a prefabricated monolithic structure, and can be used in the construction of relatively inexpensive multi-story industrial and civil buildings, including residential, buildings and structures.

There is a known method of arranging monolithic joints of multi-story frame-monolithic industrial and civil, including residential, buildings, which includes preliminary arrangement of formwork, reinforcement and preparation of the concrete mixture, its laying, compaction and provision of the necessary conditions for concrete hardening (Sannikov I.V. , Velichko V.O., Slomenov S.V. and others.

The monolithic ceiling is completed and constructed. - Kyiv: Budivelnyk, 1991.-152 p.). Joints, nodes and connections of vertical elements, according to this decision, are reliable and durable.

The disadvantage of the method is that the arrangement of joints and connections of the frames of monolithic buildings requires considerable time, labor-intensive work on the arrangement of formwork and reinforcement, the difficulty of ensuring normal conditions for concrete hardening, especially in the winter period of the year, which causes a significant deadline and a sufficiently high cost construction

There is also a known method of arranging monolithic joints when connecting prefabricated reinforced concrete structures by making trapezoidal grooves at least 20 mm deep on their vertical ends in the process of forming, which ensures the resistance of the unit to the mutual displacement of plates along and across the joint (Guide to the design of residential passed. Ex. C, part 1.

Constructions of residential buildings (to SnyP 2.08.01-85), TsNNIZP dwellings of the State Committee of Architecture, etc. - M.:

SI, 1987).

The disadvantage of the method is that with a small gap between the panels, it becomes difficult to lay and compact the concrete mixture (the mixture hangs and does not fill the cavity), the strength of the solution in the key is not high, the use of vertical reinforcing bars is not possible, the joints are not of high quality.

The useful model is based on the task of improving the well-known method of arranging the joints of precast concrete structures by changing operations, which allows creating reinforced monolithic, reliable, strong, durable joints and nodes at low costs, combining precast concrete elements into rigid flat and three-dimensional multi-element supporting structures of a multi-story prefabricated monolithic building.

З The task is solved by the fact that in a well-known multi-story building made of precast reinforced concrete structures, which includes the preliminary manufacture of flat precast concrete structures and their installation on the site, according to a useful model, even a part of the vertical ends of the wall panels has a recess of at least 1/ 10 thickness in a semicircle or at an angle, or trapezoidal or other shape with loop and/or rod outlets made of steel reinforcement arranged at least in the lower and/or upper zones, the panels are butted at the ends to form cavities of round, polygonal or any other cross-section , into which the necessary, according to the calculations, metal rods or frames are inserted, they are passed through loop outlets and/or overlaps and introduced into the foundation slab and/or through horizontal joints on the upper and/or lower floors, with subsequent laying and compaction of concrete mixtures and monopolizing and connecting prefabricated panels into flat and three-dimensional multi-element joints and nodes of the rigid structure of multi-story prefabricated monolithic buildings and structures. The arrangement of reinforced monolithic joints, nodes and connections in this way in the conditions of the construction site allows you to build up longitudinal and transverse internal and external walls from prefabricated products to the specified dimensions and erect durable multi-story prefabricated monolithic buildings. At the same time, the combination of prefabricated products into a three-dimensional monolithic structure with high strength, rigidity, reliability, seismic and explosion resistance, and therefore durability is ensured. The combination of the latest technologies of prefabricated and frame-monolithic house construction allows you to use their advantages, namely: intensively with minimal expenditure of labor, material and energy resources, to conduct the assembly of buildings from factory elements of maximum factory readiness; to create significant free areas to provide wide opportunities and flexibility of volume-planning and architectural solutions in the construction of modern industrial high-rise buildings at a minimum construction cost.

The essence of the useful model is explained by the drawings, where in fig. 1-7 are shown in cross section of vertical reinforced monolithic straight, G-, T-, cross-shaped and at any angle at the joints of vertically installed prefabricated internal and external wall structures. In fig. 7 also shows the use of formwork when arranging a joint with smaller thickness and at an angle in the panel.

An example of the implementation of the method.

When manufacturing external and internal wall panels, balcony fence panels and other structures that are most heavily loaded in multi-story buildings in factory conditions, for the formation of straight, G-, T-, cross-shaped and at any angle at the joints in the places of the joints, vertical recesses are arranged in a semicircle or at an angle, or trapezoidal in 5-70 96 thickness of panels with the exposure of loop, rod releases and individual longitudinal rods of the frame. At the same time, the loop and rod outlets in the ends of the panels, which are connected, are made of different lengths and placed with an offset to the bottom or to the top by a size equal to the diameter of the rods of the loop outlets.

For the formation of high-quality cavities and loop and rod releases, along with the metal end elements of the formwork, products made of rubber, Zhorskogo formoplast, polystyrene foam, etc. can be used. elastic materials that withstand the appropriate loads.

When preparing forms for the formation of panels for loop releases, it is advisable to put on specially made caps.

When installing structures on construction sites, wall panels 1, reinforced with a frame 3, are butted with each other at the ends to form cavities 4 of round, polygonal or any other cross-section, which, if necessary, are framed with formwork 6. The necessary are inserted into them, according to according to calculations, metal rods or frames 5, or high-strength wire, which are passed through loop outlets 2 and/or overlaps and lead into the foundation slab and/or through horizontal joints and overlaps on the upper and/or lower floors. In some cases, the cavities are reinforced with wire , including high-strength, reinforcement for several floors, or for the entire height of the building, or connected with the help of reinforcing rods or embedded parts additionally installed, at least in the upper and/or lower joint zones. Loop outlets can be connected connected by short vertical rods or by passing a wire through them with reinforcement of a larger diameter fixed at the connection points.

The concrete mixture of minimum permissible mobility is laid in the cavities, as a rule, by a mechanized method and compacted with a vibrating mace or by transmitting vibration to reinforcing bars or frames installed in the cavities, providing a uniform dense structure of concrete over the entire height of the joint. Create the necessary conditions for concrete hardening and set control

From strength. In addition to reinforced monolithic joints, panels can be connected by electric welding of embedded parts. The joints and connections of prefabricated panels arranged in this way into flat and three-dimensional multi-element joints and nodes of the rigid structure of multi-story prefabricated monolithic buildings and structures are reliable and durable and allow to build up from prefabricated products longitudinal and transverse internal wall panels to specified dimensions with the formation of wide-body with with a wide step of the load-bearing walls of multi-story prefabricated monolithic buildings.

After reinforcement, concreting and hardening of the concrete in the cavities, the reinforced concrete elements formed in them perform the functions of mini-columns, which are able to perceive the load and tension.

The proposed useful model is being prepared for implementation in combination with other technical solutions in the city of Kyiv during the construction of relatively inexpensive multi-story prefabricated monolithic industrial and civil buildings, including residential, buildings and structures.

Claims (4)

USEFUL MODEL FORMULA 1. The method of arranging the joints of reinforced concrete structures, which includes the preliminary manufacture of large-sized wall reinforced concrete structures, their installation on the site, reinforcement of vertical lines, G-, T-, cross-shaped and at any angle at the joints, nodes, connections, which differs by the fact that at least part of the vertical ends of the products has a recess of at least 1/10 of the thickness in a semicircle or at an angle, or trapezoidal or other shape with arranged at least in the lower and/or upper zones loop and/or rod outlets made of steel reinforcement, wall panels connect the ends or other faces with each other to form cavities of round, polygonal or any other cross-section, into which the necessary, according to the calculations, metal rods or frames or high-strength wire are inserted, pass them through loop outlets and/or overlaps and wind into foundation slab and/or through horizontal joints to the upper floor, with subsequent laying and compaction of concrete mixtures and monolithing and joining prefabricated panels into flat and three-dimensional multi-element joints and nodes of the rigid structure of multi-story prefabricated monolithic buildings and structures. 2. The method according to claim 1, which differs in that for the formation of straight G-, T-, cross-shaped and at any angle at joints, nodes, connections during the formation of panels in the places of joints, vertical recesses of 5-70 95 thickness are arranged panels with the exposure of the longitudinal bars of the frame and the installation of additional reinforcing rods at least in the upper and/or lower joint zones. C. The method according to claims 1, 2, which differs in that the loop and rod outlets in the ends of the panels that are connected are made of different lengths and are placed with an offset to the bottom or to the top by a size equal to the diameter of the rods of the loop outlets, and, in in some cases, the cavities are reinforced with wire, including high-strength, reinforcement for several floors or for the entire height of the building, or connected with the help of additionally arranged embedded parts. 4. The method according to claims 1, 2, which is distinguished by the fact that after reinforcement, concreting and hardening of the concrete in the cavities, the reinforced concrete elements formed in them perform the functions of mini-columns, which can also accept the load and tension. y a Z y V Spa M ay m y SHYN, her Z I do not limit Fig. 1 Y Z innocent, shy kin did you SHY NI ku s - re Ж Ka Ж what what h ik M nin sh-o son! in Yes, yes! And from here on out Fig. 2 Ki nn DK Z se den MTU Lo ns: pyvnmiya ShK Zh tone sat down that Shnshia What else Fig. With and