SU1300133A1 - Device for reinforcing floors of ribbed ferroconcrete panels - Google Patents

Abstract

The invention relates to the reinforcement of ceilings made of reinforced concrete ribbed panels used and repaired industrial buildings and structures. The aim of the invention is to increase the carrying capacity and rigidity of the overlap. The device comprises reinforcing beams covering the longitudinal edges of the adjacent panels 1 at the bottom, the upper reinforcement element and the strut 4, missed at the junction between the adjacent panels and connecting the upper reinforcing element with the reinforcement beam. The length of the reinforcement beam is less than the span of panel 1 in the light. The top reinforcement is made uncut over the supports of the panels. The upper element can be made in the form of adjacent angles 1 adjacent to the corners of the upper corners 8. Discrete plates 9 with openings for passing the strips 4 are supported on the paired angles 8. The junction between the adjacent panels 1 can be filled with concrete 10. 2p. . f-ly. 3 il. ate 00 o oo C8. 3

Description

11300133

refers to the construction of the WB

in particular, to reinforcement of reinforced concrete ribbed panels of industrial buildings and structures being operated and repaired

The aim of the invention is to increase the capacity and rigidity of the overlap.

FIG. 1 shows a device for reinforcing slabs of reinforced concrete ribbed panels; a cut-out in FIG. 2 is a view A of FIG. 1J in FIG. 3 - section bb in fig., 1.

A device for reinforcing slabs of reinforced concrete ribbed panels 1 consists of a reinforcement beam, a tunnel of channel 2 and strips 3, stud 4, missed at the junction between adjacent panels 1 and connecting the upper reinforcement element to the reinforcement beam.

The length of the reinforcement beam is less than the span of the panel 1 in the light, and the upper reinforcement element is continuous not above the supports 5 of the panels 1. The size of the channel 2 is chosen so that its shelves are covered with the minimum clearance of the longitudinal edges of the adjacent panels 1. The gaps are welded to the inner side of the shelves channel 2 strips 3. A clamp 4 with channel 2 is fixed by a nut 6, and from the top support element of the reinforcement by a nut 7. The top reinforcement element can be made in the form of adjacent panels 1 that surround the upper corners of 8 angles. 8 discrete corners are simply supported plate 9 with openings for the passage of tie rods 4. In addition, the joint between the adjacent panels 1 can be filled with concrete 10.

An example of strengthening the coverage of the workshop of a house-building factory. The shop flooring is made of reinforced concrete ribbed PKZh panels 1.5x6 m in size. The panels have cracks, corrosion of reinforcement, delamination of the protective layer with exposed rebar. The reinforcement beam is threaded from the channel 18, and the upper reinforcement element is in the form of paired angles 8 from the 75x75x8 corners. The length of the reinforcement beam 1 is equal to 5.6 m, which is less than the size between the extreme surfaces of the roof trusses. Bands 3 are 6 mm thick and 120 mm high. The length of the strips 3 is left 500 mm each and is welded to the flanges of the channel 2. Until strength

2

on the panel in the area of the longitudinal joints of the panels 1, the rolled carpet, insulation and strippers are removed; Near the roof trusses there are holes, and on the top of the junction of the adjacent panels, pair corners 8 are set, framing the upper corners of the latter. Inside the workshop with a Pioneer crane with a telescopic boom,

mounted on a trolley bridge crane, carry out the lifting and suspension of the reinforcement beam under the longitudinal edges of adjacent panels 1, and the strips 3 welded to the channels

2, interact with the internal inclined surfaces of the longitudinal edges of the adjacent panels 1. Pass the straps 4 into the holes made in the junction between the adjacent panels 1

and on discrete plates 9, and secured with nuts 6 and 7. After fixing the reinforcement device, the remaining straps 4 are installed and the joint zone between adjacent panels is injected with concrete. Concrete that joins between channel 2 and the edges of adjacent panels fills all the defects of the longitudinal Hbzx edges, cracks, exposure, reinforcement. After the injection of the joint, the nuts 7 are finally tightened from the top of the reinforcement element with a torque wrench with a squeezing force of 300-400 N. The total squeezing force is 2.5 kN / m, which increases the bearing capacity of the panel by 20-25%. Zhek 4 lanes 3, fixed on the slopes of the shelves of the channel 2, fit snugly to the longitudinal ribs and partially surround them due to the wedge-shaped profile of the interacting elements.

Claims (3)

1. A device for reinforcing slabs of reinforced concrete ribbed panels comprising reinforcement beams covering the longitudinal edges of adjacent panels from below and fixed to supports, characterized in that, in order to increase the bearing capacity and rigidity of the slab, each support is made in the form of an upper reinforcement element and station the same, missing in the junction between adjacent panels and connecting the upper reinforcement element with the reinforcement beam, the reinforcement beam length being less than the panel span in the light, and the upper element 313001334 The bridges are made by continuous cutting corners and disopors of panels supported on them. Specific plates with holes for 2. The device according to claim 1, about tl and skip stjk. so that the top ele 3. The device according to claim 1, about tl the name of the reinforcement is fulfilled in the form of a frame, so that the joint between the adjacent corners of the adjacent panels and the adjacent panels are filled with concrete. L, E F | -111 pni V T PRLY U L MCH L .. -f-Fi, t Jt t 61 fie. / at BUT / BUT  pni V T PRLY U L MCH L -f-Fi  t 61 fie. / tt  % -i 895 Editor T. Parfenova Compiled by L, Skvortsova Tehred L. Serdyukova Proofreader M. Demchik Order 1126/31 Circulation 666 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Subscription