CN1035697A - Pneumatic soil pressure sensor embedded device and method for embedding - Google Patents
Pneumatic soil pressure sensor embedded device and method for embedding Download PDFInfo
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- CN1035697A CN1035697A CN 88100625 CN88100625A CN1035697A CN 1035697 A CN1035697 A CN 1035697A CN 88100625 CN88100625 CN 88100625 CN 88100625 A CN88100625 A CN 88100625A CN 1035697 A CN1035697 A CN 1035697A
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- 239000002689 soil Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 18
- 210000002421 cell wall Anatomy 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Pneumatic soil pressure sensor embedded device (abbreviation embedded device) and method for embedding belong to used embedded device and method for embedding in a kind of civil engineering underground concrete construction of diaphragm wall, this device is made up of universal joints structure and air rammer propulsion system, utilizing this device to bury soil pressure sensor underground can be fixed on sensor on the reinforcing cage, in construction of diaphragm wall, go into wall with reinforcing cage, and with source of the gas by the air rammer air feed of pressure regulator valve in embedded device, thereby make the compression face of sensor be close to tested soil body cell wall accurately records soil pressure by sensor variation.
Description
The invention belongs to the embedded device and the method for embedding thereof of used soil pressure sensor (abbreviation sensor) in a kind of civil engineering underground concrete construction of diaphragm wall.Underground concrete diaphragm wall (abbreviation diaphragm wall) is a support building of temporarily going along with sb. to guard him usefulness in the building construction, diaphragm wall will all surround around the house foundation in the Hot work in progress, be foundation excavation soil ten thousand within the walls, wall is outward a undisturbed soil, remain with various buildings on the soil, the effect of diaphragm wall is to prevent undisturbed soil destruction and causes building damage on it.Before the earthwork of excavation house foundation, should earlier diaphragm wall be carried out, body of wall is general wide 60～70 centimeters, several meters to tens meters of the degree of depth, form with the steel concrete cast, in construction of diaphragm wall, must change the soil pressure of the outer undisturbed soil different depth of wall and detect, to guarantee the safe construction of civil engineering groundwork part, its key is to bury underground sensor.
It is existing that to bury the soil pressure sensor technology underground extremely immature, once mentioned the boring method (see figure 3) in the document, this method is in continuous wall groove (35) outside boring (36) with rig, and water-filling, use lifting rope (32) that flat garden cylindricality sensor (34) is hung to water-filled boring (36) again, in boring (36), fill out sand (33) then with fixation of sensor (34), after treating that sand (33) sinks in fact in the boring (36), can detect soil pressure, there are a lot of defectives in this method: (1) is owing to be to hang sensor (34) in boring, the position of therefore very difficult assurance lifting is with direction and be difficult to make the compression face of sensor (34) to contact with the tested soil body (37) of boring and driving fit, (2) because fixation of sensor (34) is to fill out husky the processing in boring (36), therefore sensor (34) is surrounded by husky (33), sensor (34) can not directly contact with tested soil face, and sensor (34) is produced to the displacement that deviates from sensor (34) pressure-bearing surface direction.(3) because existing method for embedding leans on the deadweight of sensor (34) to transfer, can not be too dark so limited the depth of burying, (4) influence programming and have strengthened cost owing to increasing boring in the construction.
The object of the present invention is to provide a kind of pneumatic soil pressure sensor embedded device, be called for short embedded device (see figure 1) and method for embedding (see figure 2), to overcome the defective of existing sensor burying technology, technical characterictic of the present invention is:
1. this embedded device is formed (see figure 1) by Hooke's universal joint structure and air rammer propulsion system, the former comprises sensor sleeve (2), spherical base (3), the globe joint (4) and ballhead (5) latter comprise piston loam cake (7), piston sleeve (8), piston rod (9) air rammer (10), (13) are chewed in air inlet, air chamber (15), piston base (14) Hooke's universal joint structure connects by piston rod (9) air rammer (10) interior with placing piston sleeve (8), when forced draft is chewed from air inlet after (13) enter air chamber (15), promote piston (10) motion, drive piston rod (9) simultaneously and produce motion in the same way together with ball shaped joint construction, sensor (1) is to be rigidly connected with sensor sleeve (2), (bonding with the bonding glue of special-purpose metal between sensor (1) and the sensor sleeve (2)) is in piston rod (9), on piston loam cake (7) and the air rammer (10) sealing ring (6) is housed, (11) reach (12) with anti-gas-leak.
2. utilize said apparatus to bury method general arrangement such as Fig. 2 of soil pressure sensor underground, it is characterized in that on the ground the embedded device (28) that sensor (1) will be housed by design attitude is fixed on the reinforcing cage, in construction of diaphragm wall, go into wall chase (26) with reinforcing cage, start source of the gas (21) then, open pressure regulator valve (22), by flexible pipe (24) to embedded device (28) air feed, adjust supply gas pressure as required, make the motion of sensor (1) generation perpendicular to cell wall (27) direction, be close to cell wall (27) until the compression face of sensor (1), distinguish that by the variation of monitoring instrument (23) indication reading the in running order back of sensor (1) keeps supply gas pressure constant, after treating that continuous wall concrete reaches sufficient intensity, stop air feed, sensor (1) is embedded in the concrete together with embedded device (28) flexible pipe (24).
Utilize the present invention in the civil engineering construction of diaphragm wall, to bury soil pressure sensor underground, thereby can monitor to guarantee the safe construction of civil engineering groundwork part soil pressure that underground diaphragm wall bears, pneumatic soil pressure sensor embedded device provided by the invention and method for embedding thereof have solved the defective of prior art, at first this device (see figure 1) is enclosed within sensor (1) on the sensor sleeve (2), both are rigidly connected to have changed the soft connection form that the prior art rope hangs sensor, thereby sensor (1) is put in place accurately, secondly because this device has the Hooke's universal joint structure, thereby the direction that can adjust sensor (1) arbitrarily makes sensor (1) compression face be parallel to cell wall (27) (see figure 2), the 3rd because the Hooke's universal joint structure of this device is to be promoted by air rammer, thereby no matter whether cell wall (27) (see figure 2) is smooth, can guarantee that all sensor (1) closely contacts with cell wall (27), both just cement paste was also difficult infiltrates wherein, the 4th method for embedding provided by the present invention is owing to be to be fixed on sensor (1) and embedded device on the reinforcing cage together by designing requirement on the ground, in construction of diaphragm wall, go into wall chase (26) (see figure 2) with reinforcing cage, therefore the depth of burying of sensor (1) is unrestricted, the burial place of sensor (1) is accurate, the easy construction small investment, the 5th (see figure 2) method for embedding provided by the invention is owing to adopt the variation of monitoring instrument (23) indication reading to distinguish that sensor (1) is whether in running order thereby improve greatly and bury success rate underground, after sensor (1) is in running order, keep always that supply gas pressure is constant to be reached sufficient intensity until the diaphragm wall body concrete and just stop air feed, thereby guarantee that sensor (1) is working properly.
Description of drawings:
Fig. 1 is pneumatic soil pressure sensor embedded device sectional drawing, wherein: the 1-sensor; The 2-sensor sleeve; The 3-spherical base; The 4-globe joint; The 5-ballhead; The 6-sealing ring; 7-piston loam cake; The 8-piston sleeve; The 9-piston rod; The 10-air rammer; 11, the 12-sealing ring; The 13-air inlet is chewed; The 14-piston base; The 15-air chamber.
Fig. 2 is the method for embedding general arrangement, wherein:
The 21-compressed air source unit; The 22-pressure regulator valve; The 23-monitoring instrument; The 24-flexible pipe; The 26-wall chase; The 27-cell wall; The pneumatic soil pressure sensor embedded device of 28-.The 1-soil pressure sensor
Introduce an embodiment below in conjunction with Fig. 1 and Fig. 2: once adopting apparatus and method provided by the invention to lay 25 cover sensors (1) and pneumatic soil pressure sensor embedded device (28) (see figure 2) this project diaphragm wall depth capacitys in Wangfujing, Beijing Moslem's food trade Building Project construction of diaphragm wall that urban construction three companies in Beijing's are responsible for is 15.5 meters, 14 meters of the maximum buried depths of sensor (1), pressure regulator valve (22) (see figure 2) maximum working pressure is 4.5kg/cm
2, the air rammer (10) in the pneumatic soil pressure sensor embedded device (see figure 1) uses 0～40 centimetre of stroke, and the sealing ring (6) on piston rod (9), piston loam cake (7) and the air rammer (10), (11) and (12) they are rubber ring.Present embodiment is via the observation data analysis in May, 1987 to November, its variation has good regularities and correlation, illustrate that soil pressure sensor is working properly, sensor to 9 meters of buried depth excavates inspection, sensor contacts smooth, tight with the soil body, cement-free nethike embrane on the sensor compression face illustrates that every performance of the present invention all produces a desired effect.
Utilization the invention solves embedded device and the burying technology of soil pressure sensor in the Construction of Civil Engineering, thereby can realize the actual monitoring of bearing soil pressure of underground diaphragm wall, the safe construction that guarantees the engineering foundation part changes the engineering problem that may occur with the forecast construction environment because of soil pressure, prevent harm in order in time take measures, its economic benefit and social benefit are clearly.
Claims (2)
1, a kind of pneumatic soil pressure sensor embedded device following (abbreviation embedded device) is characterized in that forming (see figure 1) by Hooke's universal joint structure and air rammer propulsion system, the Hooke's universal joint structure comprises sensor sleeve [2], spherical base [3], globe joint [4] and ballhead [5], the air rammer propulsion system comprises piston loam cake [7], piston sleeve [8], piston rod [9], air rammer [10], [13] are chewed in air inlet, air chamber [15], piston base [14], the Hooke's universal joint structure is connected by piston rod [9] air rammer [10] interior with placing piston sleeve [8], sensor [1] is to be rigidly connected with sensor sleeve [2], in piston rod [9], on piston loam cake [7] and the air rammer [10] sealing ring [6] is housed, [11] reach [12] (with anti-gas-leak).
2, a kind of method of utilizing said apparatus to bury the soil pressure sensor (see figure 2) underground, it is characterized in that on the ground the embedded device (28) that sensor (1) will be housed by design attitude is fixed on the reinforcing cage, in construction of diaphragm wall, go into wall chase (26) with reinforcing cage, start source of the gas (21) then, open pressure regulator valve (22), by flexible pipe (24) to embedded device (28) air feed, adjust supply gas pressure as required, make the motion of sensor (1) generation perpendicular to cell wall (27) direction, be close to cell wall (27) until the compression face of sensor (1), variation by monitoring instrument (23) indication reading, distinguish that the in running order back of sensor (1) keeps supply gas pressure constant, after treating that continuous wall concrete reaches sufficient intensity, stop air feed, sensor (1) is together with embedded device (28), and flexible pipe (24) is embedded in the concrete together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100625 CN1035697A (en) | 1988-03-10 | 1988-03-10 | Pneumatic soil pressure sensor embedded device and method for embedding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100625 CN1035697A (en) | 1988-03-10 | 1988-03-10 | Pneumatic soil pressure sensor embedded device and method for embedding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1035697A true CN1035697A (en) | 1989-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100625 Pending CN1035697A (en) | 1988-03-10 | 1988-03-10 | Pneumatic soil pressure sensor embedded device and method for embedding |
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| CN (1) | CN1035697A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711151A (en) * | 2013-11-27 | 2014-04-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Wave pressure sensor embedding device and method |
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1988
- 1988-03-10 CN CN 88100625 patent/CN1035697A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711151A (en) * | 2013-11-27 | 2014-04-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Wave pressure sensor embedding device and method |
| CN103711151B (en) * | 2013-11-27 | 2015-08-12 | 水利部交通运输部国家能源局南京水利科学研究院 | Wave pressure sensor pre-embedded device and method for embedding thereof |
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