CN101130992B - Pneumatic caisson non-exhaustion excavating construction method - Google Patents
Pneumatic caisson non-exhaustion excavating construction method Download PDFInfo
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- CN101130992B CN101130992B CN2006100302736A CN200610030273A CN101130992B CN 101130992 B CN101130992 B CN 101130992B CN 2006100302736 A CN2006100302736 A CN 2006100302736A CN 200610030273 A CN200610030273 A CN 200610030273A CN 101130992 B CN101130992 B CN 101130992B
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Abstract
The present invention is earth digging out pneumatic caisson construction process without air exhaustion. The process includes the following steps: 1. digging out earth with an auger and establishing controllable pressurizing earth cabin; 2. raising the piston pipe of the auger to set position conveying earth to the earth cabin; 3. stopping earth conveyance after the earth cabin is full filled, and depressing the piston to close the earth cabin; 4. raising the pressure in the earth cabin, driving the auger, depressing the piston pipe homogeneously, and exhausting earth through the earth door to sink the caisson; 5. stopping the auger after the piston pipe mouth is lowered to the bottom of the earth cabin, and raising the piston pipe to set position; and 6. repeating the steps 2-5 until the pneumatic caisson is sunk to required elevation. The present invention has no air exhaustion noise, environment friendship, high efficiency and other advantages, and may be applied widely in municipal engineering.
Description
Technical field
The present invention relates to a kind of pneumatic caisson job practices of underground construction, particularly a kind of pneumatic caisson job practices that is used for underground buildings such as the subway station of downtown area, underground ventilating shaft, underground parking garage building.
Background technology
" pneumatic caisson " excavating construction method (see figure 1) in the past normally adopts the twice valves (translation door 3 with revolving door 4) that are unearthed that the air pressure P in the caisson 1 is isolated from the outside, for keeping the stable gas pressure in the caisson 1, hang soil bucket 5 will be by unearthed tower the time, all the time guarantee that it is to be in closed condition that a sect is arranged, for keeping the soil stabilization in the caisson 1, need corresponding draught head with caisson 1 is outer in the caisson 1, this draught head is along with the degree of depth that caisson 1 sinks increases, increasing of soil pressure and increasing.Because the existence of pressure reduction is arranged, door could be opened or closed during the valve that is unearthed (translation door 3 and revolving door 4) both sides air pressure balance, need carry out the exhaust inflation, this process has just been wasted energy (E), E=P (exhaust pressure reduction) * V (exhaust volume).If go out lm
3Soil row 2m
3Gas, exhaust pressure reduction is that 0.2Mpa then arranges lm
3Soil waste 4x10
5The energy of Nm need go out 15000m as a caisson
3Soil, then Lang Fei energy is just considerable, reaches 6x10
9Nm.The more important thing is that instantaneous capacity is very big, exhaust noise is also very big, so want usually more than 90 decibels as will disturb residents at municipal construction, does not reach environmental requirement, the be unearthed requirement of the inapplicable urban construction of technology of existing pneumatic caisson.Secondly, will pass through two sects owing to be unearthed, this valve open and close need the row of being accompanied by, air inlet, operate loaded down with trivial details, native barrel the difficulty of positioning action up and down, work efficiency is low.
Summary of the invention
The present invention will solve the air pressure balance process that must follow exhaust when being unearthed in the existing pneumatic caisson work progress, and a large amount of pressure energy of waste in the work progress, and exhaust noise is big, contaminated environment, problem such as can't apply for a long time in the city, and a kind of Pneumatic caisson non-exhaustion excavating construction method is provided, this method can thoroughly be eliminated the exhaust noise that is unearthed and pollute, improve efficiency of construction, and have characteristics such as simple to operate.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of Pneumatic caisson non-exhaustion excavating construction method the steps include:
(1) is unearthed with spiral organ, sets up controlled supercharging Tu Cang;
(2) piston tube that promotes spiral organ is to desired location, and machinery carries soil to Tu Cang;
(3) Tu Cang fills, and machinery is carried and stopped, and piston tube presses down and makes the Tu Cang sealing;
(4) native storehouse soil pressure rising drives spiral organ, and piston tube evenly presses down, the unearthed door of spiral organ casting, caisson sinking;
(5) the piston mouth of pipe drops at the bottom of the native storehouse, and spiral organ stops operating, and the jigger lifting piston pipe is to desired location;
(6) repeat two to five steps, sink to corresponding absolute altitude until pneumatic caisson.
Wherein, when machinery is carried soil to native storehouse, by being arranged on water filling on the native bulkhead, grouting port injection water or slurry; When raising, soil storehouse soil pressure controls driving spiral organ rotation casting by the pressure sensor that is arranged in the native storehouse.
The invention has the beneficial effects as follows:
(1) the present invention is a Pneumatic caisson non-exhaustion excavating, and the no exhaust noise that is unearthed produces, and environment protecting is obvious;
(2) the present invention is a non-exhaustion excavating, and the pressure energy avoids waste;
(3) native holding capacity of bin hangs 3 ~ 4 times in soil bucket relatively, and one is unearthed is about existing being unearthed 0.5 ~ 0.8 times circulation timei, and work efficiency is original 4 ~ 8 times relatively;
(4) simple to operate being convenient to promoted;
(5) can promote, promote the extensive use of pneumatic caisson technology in municipal engineering.
Description of drawings
Fig. 1 is existing pneumatic caisson construction schematic diagram;
Fig. 2 to Fig. 5 is work progress figure of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and specific implementation process.A kind of Pneumatic caisson non-exhaustion excavating construction method the steps include:
(1) adopts spiral organ 6 to be unearthed, set up controlled supercharging soil storehouse 8 (Fig. 2);
Have when being unearthed for solving arrange, the problem of air inlet: adopt spiral organ 6 to be unearthed, because being unearthed, spiral organ 6 is unearthed for pushing, soil forms soil plug continuously in spiral organ 6, in the process of being unearthed, air pressure in the caisson 1 is always isolation with the air pressure in the external world, therefore can exhaust when being unearthed, do not need into Inflatable balance yet, avoided exhaust noise.
For solving the difficult problem that spiral organ 6 is unearthed: only soil can not be discharged in caisson 1 with spiral organ 6, need set up a controlled supercharging soil storehouse 8 at this, the principle in supercharging soil storehouse 8 is to press to airtight native storehouse 8 by a piston tube 7, thereby make the soil pressure in the native storehouse 8 be elevated to needed pressure, soil rotation extruding by spiral organ 6 under certain pressure reduction can be discharged soil continuously.(2) piston tube 7 that promotes spiral organ is to desired location, and machinery carries soil to native storehouse 8 (Fig. 2); In order to improve soil transportation performance in spiral organ 6, water filling port 10, grouting port 11 are set on native Cang8Bi, inject an amount of water or slurry in case of necessity, can effect a radical cure the plugging phenomenon of soil in spiral organ 6.
(3) fill in native storehouse 8, and machinery is carried and stopped, and piston tube 7 presses down and makes 8 sealings (Fig. 3) of native storehouse;
(4) native storehouse 8 soil pressures rising drives spiral organ 6, and piston tube 7 evenly presses down, the unearthed door of spiral organ 6 castings, caisson 1 sinking (Fig. 4);
When raising, soil storehouse 8 soil pressures control the 6 rotation castings of driving spiral organ by the pressure sensor 9 that is arranged in the native storehouse 8.This unearthed process need not adopt translation door, and revolving door and inlet and outlet operation only need be controlled the operation of native storehouse 8 pressure, piston tube 7, spiral organ 6, and this is simple to operate, positioning control requires low, convenient.
(5) piston tube drops to 8 ends of native storehouse for 7 mouthfuls, and spiral organ 6 stops operating, and jigger lifting piston pipe 7 is to desired location (Fig. 5);
(6) repeat two to five steps, sink to corresponding absolute altitude until pneumatic caisson 1.
Claims (3)
1. a Pneumatic caisson non-exhaustion excavating construction method is characterized in that, this construction method step is:
(1) adopts spiral organ (6) to be unearthed, set up controlled supercharging Tu Cang (8);
(2) piston tube (7) that promotes spiral organ is to desired location, and machinery carries soil to Tu Cang (8);
(3) Tu Cang (8) fills, and machinery is carried and stopped, and piston tube (7) presses down and makes Tu Cang (8) sealing;
(4) Tu Cang (8) soil pressure raises, and drives spiral organ (6), and piston tube (7) evenly presses down, the unearthed door of spiral organ (6) casting, and caisson (1) sinks;
(5) piston tube (7) mouth drops to Tu Cang (8) end, and spiral organ (6) stops operating, and jigger lifting piston pipe (7) is to desired location;
(6) repeating step (2) sinks to corresponding absolute altitude to step (5) until pneumatic caisson (1).
2. Pneumatic caisson non-exhaustion excavating construction method according to claim 1 is characterized in that, when described machinery is carried soil to Tu Cang (8), by being arranged on water filling port (10) on Tu Cang (8) wall, grouting port (11) injection water or slurry.
3. Pneumatic caisson non-exhaustion excavating construction method according to claim 1 is characterized in that, when described Tu Cang (8) soil pressure raises, controls driving spiral organ (6) rotation casting by the pressure sensor (9) that is arranged in the Tu Cang (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100302736A CN101130992B (en) | 2006-08-22 | 2006-08-22 | Pneumatic caisson non-exhaustion excavating construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100302736A CN101130992B (en) | 2006-08-22 | 2006-08-22 | Pneumatic caisson non-exhaustion excavating construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101130992A CN101130992A (en) | 2008-02-27 |
| CN101130992B true CN101130992B (en) | 2010-09-29 |
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| CN2006100302736A Active CN101130992B (en) | 2006-08-22 | 2006-08-22 | Pneumatic caisson non-exhaustion excavating construction method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339083A (en) * | 2018-10-19 | 2019-02-15 | 岩土科技股份有限公司 | Utilize the open caisson construction method of twisting sucker head |
| CN115262619B (en) * | 2022-09-28 | 2022-12-27 | 三亚宏岩岩土工程有限公司 | Special suction type caisson foundation structure for assembly type ocean engineering |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776119A (en) * | 2004-11-19 | 2006-05-24 | 光洋自动机株式会社 | Caisson structure |
-
2006
- 2006-08-22 CN CN2006100302736A patent/CN101130992B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776119A (en) * | 2004-11-19 | 2006-05-24 | 光洋自动机株式会社 | Caisson structure |
Non-Patent Citations (2)
| Title |
|---|
| JP 2006-2426 A,全文. |
| JP平8-113948A 1996.05.07 |
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| CN101130992A (en) | 2008-02-27 |
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Owner name: SHANGHAI FOUNDATION ENGINEERING GROUP CO., LTD. Free format text: FORMER NAME: SHANGHAI FOUNDATION ENGINEERING CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 200002, room 406, 612 middle Jiangxi Road, Shanghai, Huangpu District Patentee after: Shanghai Foundation Engineering Group Co., Ltd. Address before: 200002, room 406, 612 middle Jiangxi Road, Shanghai, Huangpu District Patentee before: Shanghai Foundation Engineering Co., Ltd. |