CN202299422U

CN202299422U - Laterally constraint cement mortar grouting tube bracing rod in concrete formwork

Info

Publication number: CN202299422U
Application number: CN2011203199150U
Authority: CN
Inventors: 鲁统; 陶友; 缪爱军; 叶强; 卢江华; 童霞; 李世健; 郭瑞洪; 金鹭; 殷波
Original assignee: Yongsheng Construction Group Co Ltd
Current assignee: Yongsheng Construction Group Co Ltd
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-07-04
Anticipated expiration: 2021-08-30

Abstract

A laterally constraint cement mortar grouting tube bracing rod a concrete formwork is disclosed, wherein a grouting material (6) is filled in the grouting tube (3), and tube orifices (5) at the both ends of the grouting tube (3) are level. A cement mortar grouting tube is used, wherein the bracing area thereof is equivalent to the bracing area of a large-diameter reinforcing steel bar, and the bracing strength thereof is greater than the bracing strength of a formwork inner brace produced from a wooden rod and a small-diameter reinforcing steel bar. Steel tube or batten top brace is omitted, on-site workload is reduced, and construction progress is accelerated. The bracing rod is low in cost, simple in production, simple and convenient in operation, and capable of controlling the sectional dimensions of concrete formwork well, thus ensuring the dimensional deviation of concrete.

Description

There is the lateral confinement cement mortar to irritate the pipe support bar in the concrete blinding

Technical field

The utility model relates to International Classification of Patents E04G building operations operation field concrete blinding, template or other building servicing unit technology, and especially installing in the work items has the lateral confinement cement mortar to irritate the pipe support bar to intending the concreting member side in template is carried out the concrete blinding of inner support.

Background technology

In the known technology; When concrete component formwork erections such as beam, post, shear wall, strip foundation; The general modes such as small bore flitch, major diameter reinforcing bar or the interior support of minor diameter reinforcing bar welding that adopt support in template, with the sectional dimension of control concrete blinding.

Adopt the small bore flitch to be built in the worker's method in the template; Because the template inner support need overcome the restraint forces that most of template outside is supported, so when adopting the small bore flitch, the slenderness ratio of flitch, the sectional dimension of flitch are had strict requirement as the template inner support.In the too small then pressurized brittle failure easily of the certain situation lower section of flitch length; If in wood support place crack very easily, reduced the durability and the intensity of concrete component after the excessive then concrete component moulding of flitch cross section.

Though adopt the major diameter reinforcing bar relatively good in addition as supporting actual effect in the template, specification, the presentation quality of reinforcing bar to be had relatively high expectations, the reinforcing bar outward appearance does not allow defectives such as old rust, greasy dirt, and diameter generally should be greater than 16mm.If the defective adhesive strength that then influences between concrete and the reinforcing bar of reinforcing bar presentation quality; If the contact surface of bar diameter too small then itself and template is also just less, in the concrete vibrating process, very easily shakes and take off reinforced bar support.But when adopting the major diameter reinforcing bar to support in as template, more serious to the waste of raw material of reinforcement rebar, run counter to the theory of current energy saving building, environment protection architecture.

For another example; Adopt support in the minor diameter reinforcing bar welding T-shape; To the appearance requirement of reinforcing bar with the major diameter reinforcing bar, for the contact surface of avoiding minor diameter reinforcing bar and template too small, generally can be at the steel bar end of the long 3-5cm of the end of minor diameter reinforcing bar welding; With the contact surface of increase reinforced bar support and template, thus the stability of assurance minor diameter reinforced bar support.But adopt that minor diameter reinforcing bar welding brachycephaly is more time-consuming, effort, take manual work and material, and the support strength of minor diameter reinforcing bar is often smaller, under the active force of template outside support, is easy to produce plastic strain.

The rare patent application of similar techniques is open.

For example, the formwork bracing system of 200,910,154,044 1 kinds of steel framed structure box type girder cast-in-place concrete floors of number of patent application.It comprises box-type section beam, bracket, horizontal scaffold member steel pipe, vertical scaffolding steel pipe, steel tube fastener, wooden form, tie-rod steel pipe, stupefied wood; 2 horizontal scaffold member steel pipes and many vertical scaffolding steel pipes are connected to form the scaffolding steel pipe truss through steel tube fastener; The above scaffolding steel pipe truss of 2 Pin is connected through steel tube fastener with 2 above tie-rod steel pipes, and bracket is welded in the box-type section beam, and scaffolding steel pipe truss lower end places bracket; The stupefied wood of scaffolding steel pipe truss upper ends; Place wooden form on the stupefied wood, bracket adopts 100 * 10 angle steel, 200 millimeters of length; The fusion length of the limb back of the body of bracket, acropodium and box-type section beam respectively is not less than 100 millimeters, and weld bead height is 6 millimeters.

Summary of the invention

The purpose of the utility model provides a kind of have enough support end faces and the suitable bracing or strutting arrangement of rigidity, promptly has the lateral confinement cement mortar to irritate the pipe support bar in the concrete blinding.

The measure of realization the utility model goal of the invention comprises: irritate filling material filling in the pipe, the filling pipe two ends mouth of pipe is smooth.

In the utility model, adopt cement mortar to irritate pipe, its Area of bearing is suitable with the major diameter reinforcing bar, supports in the template of its support strength greater than rod and minor diameter reinforcement fabrication.Save steel pipe or batten is shored, reduced the site work amount, accelerating construction progress.With low cost, make simply, easy and simple to handle, can be good at controlling the sectional dimension of concrete blinding, thereby guaranteed concrete dimensional errors.

Description of drawings

Fig. 1 is that the utility model support bar is installed in template inside structure sketch map

Fig. 2 is the utility model supporting bar structure sketch map

Reference numeral: template 1, interior case 2 is irritated pipe 3, pull bar 4, the mouth of pipe 5, material filling 6.

The specific embodiment

Below in conjunction with specific embodiment, describe:

Irritate filling material filling 6 in the pipe 3, the filling pipe 3 two ends mouths of pipe 5 are smooth.

The utility model is when installing and using; With adjacent forms 1 relative position basic fixed, the filling pipe 3 that will meet design specifications is afterwards again inserted interior case 2 with pull bar 4 for case 2 in being built by template 1 earlier, interior case 2 inwalls; The two ends mouth of pipe 5 of irritating pipe 3 holds out against template 1 inboard, has lateral confinement to support in the formation.

The utility model adopts the cement mortar of intensity more than M5.0 to be poured in the UPVC pipeline of DN15, DN20, DN32 as material filling 6; Clog sprinkle water after closely knit, covering, maintenance; Strength of cement mortar in the UPVC pipeline is more than or equal to 5.0MPa; Process and irritate pipe 3, promptly can be used for intending in the template of concreting member as the inner support rod member.

The utility model is owing to adopted the lateral confinement of UPVC pipe as cement mortar; The actual compressive strength of the two combination head and shoulders above the intensity of UPVC pipe and cement mortar itself; Possessed simultaneously:, compressive strength very high, simple for production, with low cost advantage big with template 1 contact area; Reached Expected Results in the actual use, satisfied requirement fully as support in the concrete blinding 1.

The utility model scope of application: irritate template 1 inner support that pipe 3 is applicable to the members such as cast-in-situ concrete beam, post, shear wall, strip foundation of 200mm≤sectional dimension≤450mm.Wherein DN15 irritates pipe 3 and is applicable to that template 1 inner support, the DN20 of concrete section size 200-250mm irritate pipe 3 and be applicable to that template 1 inner support, the DN32 rod member of concrete section size 250-350mm are applicable to the template inner support of concrete section size 350-450mm.

The utility model is made detailed process:

1. measure (width) sectional dimension of intending the concreting member;

2. employing electric slicer is cut out the UPVC pipe along the length direction and to be cut according to the sectional dimension of concrete component;

3. the UPVC pipe that sanction is cut is bundled into tube bank according to the classification of same specification caliber and with adhesive tape;

4. adopt a segment length 60cm, diameter is the round steel of 2/3UPVC caliber, as the stamp stem of tamping mortar;

5. according to the cement mortar of the even stirring intensity of cement mortar mix ratio more than or equal to M5.0;

6. UPVC tube bank is vertically stood on the plate vibrator, with perching knife toward the interior cement injection mortar of UPVC tube bank, while vibrating with stamp stem tamping mortar, until cement mortar fill, closely knit;

7. adopt felt or gunnysack to cover the UPVC tube bank, the watering maintenance is no less than 14 days;

8. cut off adhesive tape when having installed and used lateral confinement cement mortar supporting rod, single supporting rod equidistance is placed in the concrete blinding, this rod member is supported in respectively on the template interior plate after the closed template.

Claims

1. have the lateral confinement cement mortar to irritate in the concrete blinding and manage support bar, it is characterized in that, irritate filling material filling (6) in the pipe (3), filling pipe (3) two ends mouths of pipe (5) are smooth.