CN1827920A

CN1827920A - Method for reducing steel pipe concrete pumping resistance

Info

Publication number: CN1827920A
Application number: CN 200510054076
Authority: CN
Inventors: 李勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2006-09-06

Abstract

The invention relates to a method for reducing the pumping resistance of steel tube concrete, especially providing a concrete filling method used in bridge and high building. The invention comprises: a steel tube (1), a slurry-compressing hole (2), an exhaust hole (3) and a water outlet (4). Wherein, the inner wall of steel tube (1) is wet in compressing slurry, to reduce the pumping resistance, and the slurry-compressing hole (2) pumps the concrete to the top of steel tube to form the steel tube concrete. The invention is simple and easy.

Description

A kind of method that reduces steel pipe concrete pumping resistance

Technical field the present invention relates to a kind of method that reduces steel pipe concrete pumping resistance, more particularly, relate to a kind of bridge, isostructural concrete spouting technology of highrise building of being particularly suitable for, for pumping of concrete in the steel pipe reduces measure and the method that resistance is taked.

Background technology in the prior art, do not reduce temporarily the relevant report of steel pipe concrete pumping resistance, application number 87207350 disclosed " the portable pumping concrete of tube wall measure of resistance instrument " is made up of water booster system, mobile pipe, fixed support, thrust device, guiding trestle.It only considers to measure the resistance size, does not consider to reduce resistance.The present invention is by definite conception, and method is simple, prevents from effectively booster to have improved economic benefit.

Summary of the invention the objective of the invention is to utilize the easy flow performance of clear water, can play lubrication to tube wall.Simplicity of design, easy construction, be widely used.

In order to achieve the above object, the invention provides following technical scheme: design steel pipe (1), it is supported at both ends on the concrete bed, and steam vent (3) is arranged at steel pipe (1) top, and mud jacking mouth (2), outfall (4) are arranged at steel pipe (1) bottom.Under steel pipe inwall moisture state,,, form concrete filled steel tube until steel pipe top by mud jacking mouth (2) pumping of concrete.

The present invention's technical scheme preferably is: steel pipe (1) is the circular section steel pipe, and height is greater than 20 meters, to give full play to mechanical properties of materials.

Compared with prior art, the present invention utilizes clear water moistening to steel pipe (1) inwall, thereby reduces pumping resistance, reduces pump pressure, prevents booster, has broad application prospects in building trade especially bridge, highrise building field.

Be description of drawings of the present invention below the description of drawings:

Fig. 1 is a contour structures elevational schematic view one of the present invention; (column)

Fig. 2 is a contour structures elevational schematic view two of the present invention; (steel tube arch)

Fig. 3 is a contour structures floor map of the present invention;

Among Fig. 1～Fig. 3, (1) is that steel pipe, (2) are that mud jacking mouth, (3) are that steam vent, (4) are outfall.

By specific embodiment the present invention is carried out more detailed description below the specific embodiment:

With reference to Fig. 1,2 and 3, earlier mud jacking mouth (2), the outfall (4) of steel pipe (1) are blocked, and located to fill clear water by the steam vent (3) at top; Clear water is discharged rapidly from outfall (4) in will managing before the mud jacking, soldering and sealing outfall then (4); Under steel pipe inwall moisture state by mud jacking mouth (2) pumping of concrete, until steel pipe top.Mud jacking mouth (2) can be installed air valve, after mud jacking is finished, closes earlier gas check valve, removes mudjack, treats to burn after the concrete setting the little steel pipe of mud jacking mouth (2), and soldering and sealing mud jacking mouth (2) finally forms concrete filled steel tube.

Claims

1, a kind of method that reduces steel pipe concrete pumping resistance.It is made up of steel pipe (1), mud jacking mouth (2), steam vent (3), outfall (4) four parts.Earlier mud jacking mouth (2), the outfall (4) of steel pipe (1) are blocked, and located to fill clear water by the steam vent (3) at top; Clear water is discharged rapidly from outfall (4) in will managing before the mud jacking, soldering and sealing outfall then (4); Under steel pipe inwall moisture state,,, form concrete filled steel tube until steel pipe top by mud jacking mouth (2) pumping of concrete.It is characterized in that: steel pipe (1) its inwall when mud jacking is moistening, thereby reduces pumping resistance.

2, steel pipe according to claim 1 (1) is characterized in that: steel pipe (1) is a pipe or the many truss that pipe is formed; It can be the framework of sealing, also can be straight line or the camber line shape cantilever construction that is bearing in ground; Its shape can be arch, door shape or compositions such as broken line, camber line.

3, steel pipe according to claim 1 (1) is characterized in that: steel pipe (1) is the cross section of square steel pipe, round steel pipe or other shapes.

4, steel pipe according to claim 1 (1) is characterized in that: its material of steel pipe (1) can be steel, stainless steel, alloy or other Materials with High Strength; Steel pipe length is generally more than 20 meters.

5, steel pipe according to claim 1 (1) is characterized in that: mud jacking mouth (2) should be installed air valve.After mud jacking is finished, close earlier gas check valve, remove mudjack, treat to burn after the concrete setting the little steel pipe of mud jacking mouth (2), soldering and sealing mud jacking mouth (2).