CN101886391A

CN101886391A - Waterproof guide pipe for underwater concrete filling pile

Info

Publication number: CN101886391A
Application number: CN 201010217625
Authority: CN
Inventors: 黎明中
Original assignee: WUHAN FIRST METALLURGICAL COMMUNICATION ENGINEERING Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2010-11-17

Abstract

The invention relates to a guide pipe for a filling material for a borehole filling pile or an underwater concrete filling pile of an underground continuous wall and the like. The guide pipe consists of a bottom guide pipe (1), a middle guide pipe (2) on the upper part of the bottom guide pipe (1), an upper guide pipe (3) at the upper end of the middle guide pipe (2), and a hopper (4); a flexible inner pipe (5) is arranged in the bottom guide pipe (1), one end of the flexible inner pipe (5) is fixedly connected with the upper end of the bottom guide pipe (1), and the other end of the flexible inner pipe (5) is locked by using an elastic locker (6); and the pipe wall of the bottom guide pipe (1) is provided with a through hole (7). The guide pipe can effectively prevent underground water from entering the guide pipe at the bottom of the filling material to keep the filling guide pipe in a water-free state during construction so as to ensure the construction quality of the concrete filling pile; and the guide pipe can adapt to the filling of the underwater concrete filling pile under various environments, can be continuously constructed by reinserting a concrete mixture in midway, and has a simple structure and easy implementation.

Description

A kind of waterproof guide pipe of underwater concrete filling pile

Technical field

The present invention relates to the perfusion material conduit of underwater concrete filling pile, specifically belong to the conduit of the perfusion material of underwater concrete filling piles such as bored pile or diaphragm wall.

Background technology

At present, when underwater concretes such as bored pile, diaphragm wall poured into, often adopting bottom formula and side valve type also was two kinds of catheterized reperfusion technologies of water proof bolt.The bottom formula is to install bottom in the bottom of the used conduit of concrete perfusion, again conduit is slowly sunk at the bottom of the hole, back penetration concrete in anhydrous conduit, when progressively mentioning conduit, bottom comes off and stays in the concrete, after again according to process specification requirements perfusion concrete.

Side valve type is under the opened state of conduit bottom, conduit is slowly sunk at the bottom of the hole 0.3～0.5 meter depths; Before concrete perfusion, guiding valve is put on the water surface in the conduit; Then first batch of concrete mix is filled up, after cut off the iron wire that hangs guiding valve, guiding valve and concrete mix descend along pipe, the water in the pipe is extruded, guiding valve just comes off and stays in the base concrete of hole, after pour into concrete according to technological requirement again.Its advantage: can pour into a large amount of concrete rapidly to depth of water place, without draining, implement and utensil are simple.Its deficiency: the conduit of bottom formula is bigger to buoyancy when water is dark, and must add the counterweight of offsetting buoyancy this moment, as for 10 meters with headwater depth, then the conduit very difficulty that just falls because bottom is blocked bottom the conduit, utilizes the clear hole of conduit to become also very difficult in addition.And the conduit construction requirement strictness of side valve type, otherwise easily produce water injection through pipe and make the quality problems of concrete disintegration; If conduit stops up the tremie concrete that can not placing of concrete then must adopt the bottom formula again, waste time and energy, construction quality also is difficult for guaranteeing.In addition, stick to the concrete that condenses on the pipe inner wall, in time clear Xian otherwise knock and easily cause deformation of guide tube to influence construction quality, especially very unfavorable to the quality of castinplace pile, have a strong impact on the quality of the building of on this castinplace pile, building, even can cause very big harm.

The perfusion material conduit of present employed cast-in-place concrete pile, because there is certain irrationality in structure, when concrete perfusion, there are vegetables suddenly descend muddy water then can enter in the conduit slightly, the perfusion material of underground muddy water and castinplace pile is mixed, thereby will be extremely harmful to the quality of castinplace pile pile body, have a strong impact on construction quality, this is that institute is unallowed.In case this problem occurs, then can cause doing over again, perfusion is time-consuming, take material again, influences programming, causes the increasing of construction cost.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, provide a kind of and can prevent effectively that underground muddy water from entering the conduit of perfusion, guarantee the waterproof guide pipe of the underwater concrete filling pile of cast-in-place concrete pile construction quality.

Realize the technical measures of above-mentioned purpose:

A kind of waterproof guide pipe of underwater concrete filling pile, upper end conduit, the hopper of its intermediate conductor by bottom conduit, conduit top, bottom, intermediate conductor upper end are formed.It is: pipe in the flexibility is installed in the conduit of bottom, and an end of flexible interior pipe is fixedlyed connected with the upper end of bottom conduit, and the other end of flexible interior pipe blocks with the elasticity locker; On the tube wall of bottom conduit, be provided with through hole.

It is: the elasticity locker is a clamping hoop type or annular.

It is: the material of pipe is percolation-proof and wear-resisting rubber, engineering plastics material in flexible.

The present invention compared with prior art, it can prevent effectively that underground water from entering the conduit of perfusion material bottom, make in the inherent work progress of perfusion cannula and remain anhydrous state, thereby guarantee the construction quality of cast-in-place concrete pile, for solid basis has been established in next step building operations, and can be adapted to the perfusion of underwater concrete filling pile under the various ambient conditionss, also can continue construction because of certain reason can repeat to insert concrete mix midway, and simple in structure, very easily implement.

Description of drawings

Fig. 1 is the structural representation of the bottom conduit of cast-in-place concrete pile

Fig. 2 is the contour structures schematic diagram of bottom conduit among Fig. 1

Fig. 3 is the structural representation of clip shape elasticity locker among Fig. 1

Fig. 4 is the structural representation of cyclic spring locker among Fig. 1

Fig. 5 is the structural representation of flexible interior pipe among Fig. 1

The specific embodiment

Be further described below in conjunction with accompanying drawing

A kind of waterproof guide pipe of underwater concrete filling pile, its intermediate conductor 2 by bottom conduit 1, bottom conduit 1 top, the upper end conduit 3 of intermediate conductor 2 upper ends, hopper 4 are formed.It processes equally distributed through hole 7 on the tube wall of bottom conduit 1; Again in bottom conduit 1 installation can prevent to seep water and wear-resisting rubber material or engineering plastics flexible in manage 5, its can prevent to seep water and wear-resisting rubber material or engineering plastics flexible in the upper end of an end and bottom conduit 1 of pipe 5 by bolt or clip or peg graft fast and fixedly connected, can prevent to seep water and wear-resisting rubber material or engineering plastics flexible in the other end of pipe 5 tight with clamping hoop type or cyclic spring locker 6 envelopes, and be the state that freely hangs.

Principle

Before concrete spouting, can prevent to seep water and wear-resisting rubber material or engineering plastics flexible in pipe 5 owing to blocked by clamping hoop type or cyclic spring locker 6, underground muddy water is entered less than in the pipe 5 in this flexibility, and, owing to the through hole 7 on bottom conduit 1 tube wall has entering of underground water and mud to make the interior pipe 5 of this flexibility and the inwall of bottom conduit 1 is to separate shape, and should manage 5 owing to the pressure that is subjected to outside muddy water is close in the flexibility, thereby guaranteed and to be in dry state by the interior pipe 5 of flexibility; When the concrete spouting material passes through catheter perfusion, because the concrete spouting material has an impact force to pipe 5 in this flexibility, make muddy water between the inwall of pipe 5 and bottom conduit 1 in this flexibility under pressurized by through hole 7 and the discharge of conduit 1 end opening, increase along with pipe 5 concrete spouting material in this flexibility, pipe 5 and the inwall of bottom conduit 1 are for pasting state mutually in this flexibility, the concrete spouting material struts clamping hoop type or cyclic spring locker 6, makes the concrete spouting materials flow go out in this flexibility pipe 5 and pours into into cast-in-place concrete pile.When pipe 5 in this flexibility is damaged by the concrete spouting material or clamping hoop type or cyclic spring locker 6 can not then should in time be changed in should flexibility during pipe 5 lockings.Plugging appears in running into the extraordinary circumstances construction, insert in the concrete of having poured into a mould more under water after then conduit can being extracted cleaning, this process makes that the concrete pouring quality is unaffected proceeds that because of above-mentioned principle has kept anhydrous in the pipe this point is that traditional handicraft method institute is unvanquishable.

Claims

1. the waterproof guide pipe of a underwater concrete filling pile, upper end conduit (3), the hopper (4) of its intermediate conductor (2) by bottom conduit (1), bottom conduit (1) top, intermediate conductor (2) upper end are formed, it is characterized in that: pipe (5) in the flexibility is installed in bottom conduit (1), an end of pipe (5) is fixedlyed connected with the upper end of bottom conduit (1) in flexible, and the other end of flexible interior pipe (5) blocks with elasticity locker (6); On the tube wall of bottom conduit (1), be provided with through hole (7).

2. the waterproof guide pipe of a kind of underwater concrete filling pile as claimed in claim 1 is characterized in that: elasticity locker (5) is for clamping hoop type or annular.

3. the waterproof guide pipe of a kind of underwater concrete filling pile as claimed in claim 1 is characterized in that: the material of pipe (5) is percolation-proof and wear-resisting rubber, engineering plastics in flexible.