CN205224266U

CN205224266U - Overlength super large area bottom plate post -cast strip structure

Info

Publication number: CN205224266U
Application number: CN201521062575.2U
Authority: CN
Inventors: 张守治; 徐文; 姚婷; 陆安群; 王育江
Original assignee: Sobute New Materials Co Ltd
Current assignee: Sobute New Materials Co Ltd; Jiangsu Bote New Materials Co Ltd
Priority date: 2015-12-17
Filing date: 2015-12-17
Publication date: 2016-05-11
Anticipated expiration: 2025-12-17

Abstract

The utility model provides a post -cast strip structure of overlength super large area bottom plate. The post -cast strip structure is including setting up in two I -steel of post -cast strip both sides, sets up between two I -steel web inboards the tortuous steel sheet as absorbing the carrier that warp to and attach the stirrup in the web outside of two I -steel every 15cm~25cm's interval welding, be the post -cast strip scope between the two I -steel webs promptly. The utility model discloses an interval sets up tortuous steel sheet in the overlength post -cast strip, can be out of shape the shrinkage strains that buffer absorbs to come from the post -cast strip both sides and water earlier the concrete as one kind on the one hand, and on the other hand had both realized the disposable concreting construction in succession of overlength post -cast strip as being out of shape isolating device overlength post -cast strip along the great shrinkage strains of its length direction accumulation that can effectively weaken, had avoided the disposable overlength in post -cast strip to build the fracture risk that probably produces again.

Description

A kind of overlength overlarge area bottom plate rear pouring tape structure

Technical field

The utility model relates to construction engineering technical field, is specifically related to a kind of late poured band structure being applied in overlength overlarge area base plate.

Background technology

Strength grade of concrete increases in recent years, mobility strengthens, the feature that concrete setting process has soon firmly, morning is strong, calorific value is large, volume of concrete shrinks in increase tendency, this just requires in structure design, must take seriously the adverse effect brought to structure due to overlength, when increase structure expansion joint spacing or when not arranging shrinkage joint, must practical measures be taked, prevent structure crack.In Building Construction, in order to prevent monolithic reinforced concrete structure due to difference variation and shrink uneven issuable harmful cracks, according to design or job specfication requirement, in the structure construction stage, sole plate, wall, beam relevant position are arranged temporary construction last-cost joint, by this seam, super-long structural is temporarily divided into some parts, after treating the shrinkage strain that structure release is certain, then build this constuction joint concrete structure is linked to be entirety, this temporary construction seam is called ater-casting.Ater-casting is a kind of construction measure for discharging shrinkage strain and shrinkage stress often used in concrete building structures construction.The great advantage of this way is: can overcome the distortional stress produced because building is long, can make again whole building one integrated mass, improves using function.

At present, along with developing rapidly and scientific and technical progress of economy, construction work is to super large and multifunction development, some super block constructions of structures constantly occur, overlength, (namely length is more than 60mm for overlarge area, area is more than 3600m2) Concrete bottom plate structure increasing, the ater-casting connecting overlength overlarge area base arrangement is caused to there will be the phenomenon of primary concreting length more than 60m in their length direction thus, ater-casting self is occurred in their length direction, and cracking risk increases, be difficult to reach overlength, the Crack Control effect of overlarge area base arrangement.

Utility model content

There is the problem of cracking risk in the ater-casting for overlength overlarge area base arrangement, utility model provides a kind of novel late poured band structure for overlength overlarge area base plate in their length direction.

The technical solution of the utility model is:

A kind of late poured band structure, it is arranged in the base plate of overlength overlarge area, easily to cause because ater-casting its length is long when constructing concrete shrinkage to strain for preventing overlength overlarge area base plate in ater-casting, produce stress concentrating and occurring crack, being made up of tortuous steel plate, i iron and additional hooping.

A kind of overlength overlarge area bottom plate rear pouring tape structure, comprise two i iron being arranged at both sides, ater-casting, as the tortuous steel plate absorbing the carrier be out of shape between being arranged at inside two i iron webs, and weld additional hooping in the web outside of two i iron every the spacing of 15cm ~ 25cm, be ater-casting scope between two i iron webs;

Described i iron is vertically set on the width of ater-casting, is weldingly connected, so that shutoff underplate concrete as the wall mould of both sides, ater-casting and the main muscle of floor level;

Described additional hooping is vertically welded in the web outside of i iron, as i iron with first water underplate concrete link measure, preferred weld spacing is 20cm;

The cross section that described tortuous steel plate is bent by a monoblock plain plate is the tortuous steel plate of V-shape, and be welded on inside i iron web along ater-casting length direction every the interval vertical of 10m ~ 20m, preferred distance is 12m ~ 15m;

Described tortuous steel plate bending angle can be arbitrarily angled between 90 degree ~ 180 degree, and preferred bending angle is 120 degree ~ 150 degree.

Owing to have employed technique scheme, compared with prior art, tortuous steel plate of the present utility model is as the main device connecting both sides, ater-casting i iron, there is good stretcher strain ability and compression deformation ability, make this ater-casting as a kind of deformation buffer device, Absorbable rod, from the contraction strain of the first pouring concrete in both sides, ater-casting, improves the cracking resistance of underplate concrete at ater-casting width; Owing to namely arranging one block of tortuous steel plate every a certain distance on the length direction of ater-casting, the ater-casting of overlength can be separated into several member units by spaced tortuous steel plate along its length, the larger contraction strain that overlength ater-casting is accumulated along its length is shared on each member unit, in single concrete component unit, the shrinkage stress of accumulation significantly reduces, and effectively can control the crack of concrete on the length direction of ater-casting and occur; Both achieved the disposable continuous placing construction of overlength ater-casting, and turn avoid the disposable overlength in ater-casting and build issuable cracking risk.

Accompanying drawing explanation

Fig. 1 is the utility model overlength super large base plate late poured band structure schematic diagram.

Specifically be labeled as in Fig. 1: 1 i iron, 2 tortuous steel plates, 3 additional hoopings, the main muscle of 4 level.

Detailed description of the invention

Below in conjunction with Figure of description, the utility model is described in further detail.

As shown in Figure 1, for a late poured band structure for overlength overlarge area base plate, comprise be arranged in both sides, ater-casting two i iron 1, be arranged in inside two i iron webs between tortuous steel plate 2 and be arranged in the additional hooping 3 of web outside of two i iron 1.In the present embodiment, i iron 1 has higher bearing capacity, its width builds according to bottom plate rear pouring tape that thickness is corresponding to be chosen, length builds according to bottom plate rear pouring tape that length is corresponding to be chosen, two i iron 1 are all vertically set on ater-casting width, and the main muscle 4 of level in first pouring concrete is weldingly connected, as the side form of the first pouring concrete of shutoff.The cross section that tortuous steel plate 2 is bent by a monoblock plain plate is the tortuous steel plate of V-shape, be vertically welded in inside i iron web at spacing intervals along ater-casting length direction, the effective width of tortuous steel plate equals ater-casting width and deducts two i iron its thickness, tortuous steel plate height equals the thickness that ater-casting thickness deducts i iron upper and lower two-layer I-shaped face steel, and the angle of bend of tortuous steel plate is 120 degree.Additional hooping 3 is vertically welded in the web outside of i iron, and is weldingly connected with the vertical muscle in first pouring concrete, strengthens the connection effect of i iron and first pouring concrete further.

Implement the late poured band structure for overlength overlarge area base plate of the present utility model, its step comprises: choose suitable i iron and plain plate according to ater-casting thickness, first plain plate being bent into cross section is V-shape, angle of bend is the tortuous steel plate of 120 degree, secondly the main muscle 4 of floor level of i iron and both sides, ater-casting is welded to connect, in i iron 1 web outside every 20cm vertical welding additional hooping, and additional hooping 3 and base plate are indulged muscle be welded to connect, make to form region, an ater-casting between two i iron webs, finally lay one block of tortuous steel plate at spacing intervals along ater-casting length direction, the tortuous steel plate of every block is all vertically welded in inside the web of two i iron, tortuous steel plate forms several small-sized late poured band structure unit together with i iron.

The utility model arranges tortuous steel plate by interval in overlength overlarge area bottom plate rear pouring tape, on the one hand can as the contraction strain of a kind of deformation buffer device absorption from the first pouring concrete in both sides, ater-casting, on the other hand effectively can weaken as distortion isolation device the larger contraction strain that overlength ater-casting accumulates along its length, effectively prevent the generation in overlength super large underplate concrete crack.

Claims

1. an overlength overlarge area bottom plate rear pouring tape structure, it is characterized in that: comprise two i iron (1) being arranged at both sides, ater-casting, as the tortuous steel plate (2) absorbing the carrier be out of shape between being arranged at inside two i iron (1) webs, and weld additional hooping (3) in the web outside of two i iron (1) every the spacing of 15cm ~ 25cm, be ater-casting scope between two i iron (1) web;

Described i iron (1) is vertically set on the width of ater-casting, is weldingly connected as the wall mould of both sides, ater-casting and the main muscle of floor level (4); Described additional hooping (3) is vertically welded in the web outside of i iron (1); The cross section that described tortuous steel plate (2) is bent by a monoblock plain plate is the tortuous steel plate of V-shape, is welded on inside i iron (1) web along ater-casting length direction every the interval vertical of 10m ~ 20m;

Described tortuous steel plate (2) bending angle can be arbitrarily angled between 90 degree ~ 180 degree.

2. a kind of overlength overlarge area bottom plate rear pouring tape structure according to claim 1, it is characterized in that, the weld spacing of described additional hooping (3) is 20cm.

3. a kind of overlength overlarge area bottom plate rear pouring tape structure according to claim 1, is characterized in that, described tortuous steel plate (2) is welded on inside i iron (1) web along the interval vertical of ater-casting length direction every 12m ~ 15m.

4. according to a kind of overlength overlarge area bottom plate rear pouring tape structure according to claim 1, it is characterized in that, described tortuous steel plate (2) bending angle can be arbitrarily angled between 120 degree ~ 150 degree.