CN102519427B - Method for observing settlement of full section of widened roadbed - Google Patents
Method for observing settlement of full section of widened roadbed Download PDFInfo
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- CN102519427B CN102519427B CN 201110423338 CN201110423338A CN102519427B CN 102519427 B CN102519427 B CN 102519427B CN 201110423338 CN201110423338 CN 201110423338 CN 201110423338 A CN201110423338 A CN 201110423338A CN 102519427 B CN102519427 B CN 102519427B
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Abstract
The invention discloses a method for observing settlement of a full section of a widened roadbed, belonging to the field of roadbed construction. The method comprises the following steps of: step 1: (1), burying an observation pipe: horizontally burying a U-shaped pipe at the junction between the widened roadbed and the original roadbed; and (2), respectively connecting a return wire pipe and a measurement pipe to two ends of the U-shaped pipe in a sealed manner, and penetrating a full-length measurement rope in the return wire pipe, the U-shaped pipe and the measurement pipe; step 2: (1), observing settlement of the widened roadbed: connecting the head end of a settlement meter to one end of the measurement rope in the measurement pipe; (2), putting the settlement meter in the measurement pipe; (3), pulling the measurement rope at one end of the return wire pipe, and recording data displayed on a display instrument in the event of pausing every time; and (4), back measuring, and recording data; and step 3: cleansing data, and analyzing and comparing the settlement condition of the full section of the widened roadbed. The method disclosed by the invention has the advantages that: the U-shaped pipe is used as a reversing device; furthermore, the measurement rope only needs to be pulled at the same side in the event of observing, so that the settlement meter travels in the measurement pipe at intervals, thus, observation of the settlement condition of the full section of the widened roadbed can be realized.
Description
Technical field
The present invention relates to a kind of settlement of foundation observation procedure, the especially a kind of full section settlement observation of roadbed method of widening.
Background technology
Requirement for aspects such as the satisfied magnitude of traffic flow that increases day by day and running velocity liftings, existing widening of subgrade is transformed into for a hot issue in the present field of traffic, such as the railway single line change multiple line, speed-raising such as widens at engineering, and with the similar structures of roadbed, also exist as the water conservancy dam construction and to widen the transformation problem accordingly.
The sedimentation and deformation of roadbed is made up of banket compression deformation and ground consolidation sedimentation and deformation two parts, when existing roadbed being widened transformation, existing roadbed body and ground stabilization by consolidation under load actions such as deadweight, and new widened section soil body compression deformation is not finished as yet, all there are the trend of sedimentation and deformation in widened section roadbed body and its underpart ground under load action, for reducing and avoiding occurring non-uniform settling, guarantee the normal use of widening of subgrade part, need observe and analyze the sedimentation and deformation characteristic of widened section roadbed.
The widening of subgrade transformation need be excavated certain thickness existing roadbed side slope, reason is that existing roadbed side slope is difficult for compacting when construction, in use cause soil body stress relief owing to lacking sidewise restraint, extraneous simultaneously effects such as precipitation and evaporation also can cause the loose of slope soil, for realizing the collaborative work of new and old roadbed, increase new filling roadbed stability, the general method that adopts at existing roadbed side slope excavation step, successively form bonding layer in the process that widened section fills, more stable.
The sedimentation and deformation Monitoring Data both can have been followed the tracks of the stability of understanding ground and new roadbed in the work progress, can observe and analyze the sedimentation Changing Pattern of roadbed again, the settlement after construction of control roadbed, thus guarantee construction quality, realize the normal use of widening roadbed.
At present, the sedimentation and deformation observation method of testing commonly used for roadbed has: monitoring stake, sedimentation water tumbler, settlement plate, sedimentation magnet ring, hydraulic type section sedimentometer and sedimentometer.Mainly be observation station to be set in road bed, inside and at subgrade cross section measures such as full face sedimentation and deformation observation to be set to realize.
1, at road bed sedimentation variation tendency that sedimentation mark can observation position point is set, as monitoring etc.; Bury settlement plate, sedimentation magnet ring etc. in roadbed inside underground and carry out settlement observation, can analyze the sedimentation Changing Pattern of roadbed close beta point, can't reflect along the bulk settling of subgrade cross section to change.
2, at present to roadbed full section settlement observation mainly adopt equipment such as hydraulic type section sedimentometer and sedimentometer, but all be the settlement observation that is confined to newly-built roadbed.Present method of testing also can't be used for the whole full face settlement observation of roadbed of widening.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of full section settlement observation of roadbed method of widening, and can carry out full sectional observation to widening roadbed, grasps comprehensively and widens the full section settlement law of roadbed.
Design concept of the present invention is achieved in that because to widen roadbed be the new roadbed that fills again in existing roadbed one side or both sides, existing subgrade settlement observation procedure can not be used for observation and widen the full face sedimentation of roadbed, the present invention adopts the method that U-shaped pipe and survey pipe and loop line pipe combine is set in widening roadbed, existing sedimentometer is applied to widens in the full section survey of roadbed, the length of surveying pipe is identical with the width of widening roadbed, the effect of U-shaped pipe is to change the direction of lining rope, can be implemented in and widens the roadbed homonymy and realize full section settlement observation widening the dilatory lining rope of roadbed homonymy.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of full section settlement observation of roadbed method of widening may further comprise the steps:
The first step: bury sighting tube underground
1) widening the horizontally embedded U-shaped pipe in roadbed and existing roadbed junction;
2) be tightly connected respectively at U-shaped pipe two ends loop line pipe and survey pipe, and at loop line pipe, U-shaped pipe with survey in the pipe and wear elongated lining rope; Described loop line pipe with survey that pipe be arranged in parallel and both axis are vertical with the circuit bearing of trend;
Second step: subgrade settlement is widened in observation
1) sedimentometer head end and lining rope being positioned at an end of surveying pipe is connected;
2) sedimentometer is put into the survey pipe;
3) from loop line Guan Yiduan pulling lining rope, sedimentometer is moved inward from surveying the pipe outer end, and every 30-70 centimetre pause is once, and record is each when pausing on display instrument data presented;
4) return survey, and record data;
The 3rd step: data preparation, analyze contrast and widen the full section sedimentation of roadbed situation.
20-40 centimetre apart from the roadbed bottom surface of described U-shaped pipe, preferred 30 centimetres.
Described loop line pipe is steel pipe; Described survey pipe is that inner wall even distribution has the guide wheel that arranges on the pvc pipe of four axial notches and its diameter and groove and the described sedimentometer suitable; Described survey pipe is when burying underground, and wherein two groove opposite are presented down setting, arranges about two other is.
Described survey pipe and loop line pipe outer end exceed roadbed side slope 40-60 centimetre, preferred 50 centimetres.
The fine sand of 5-10 cm thick is laid in described survey pipe, loop line pipe and U-shaped pipe below.
Sedimentometer put into surveys before the pipe, survey the place's zeroing of pipe pipe end earlier again, and with lower tumbler on the sedimentometer with survey pipe and go up lower guide channel and cooperates to leave standstill after the installation and begin measurement after 3-5 minute.
Described lining rope is wire rope.
The nonwoven fabrics sealing is all used in described survey pipe and U-shaped interface tube place, loop line pipe and U-shaped interface tube and survey pipe or loop line pipe lengthening section junction.
Beneficial effect of the present invention is as follows: the present invention adopts the U-shaped pipe as reversing arrangement, and elongated lining rope is set in the loop line pipe, the length of lining rope is greater than the length summation of surveying pipe, U-shaped pipe and loop line pipe, only need during observation at the dilatory lining rope of homonymy, make sedimentometer walking at interval in surveying pipe, can realize widening the observation of the full section sedimentation of roadbed situation, in order to ensure the consistance of observation data, the present invention adopts the mode of repeatedly measuring back and forth to eliminate measuring error.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 surveys pipe, U-shaped pipe and loop line pipe connection diagram among the present invention;
In the accompanying drawings: 1, U-shaped pipe; 2, lining rope; 3, loop line pipe; 4, cable; 5, display instrument; 6, survey pipe; 7, sedimentometer.
Embodiment
In sum, the invention discloses a kind of full section settlement observation of roadbed method of widening, it is characterized in that, may further comprise the steps:
The first step: bury sighting tube 6 underground
1) widening the horizontally embedded U-shaped pipe 1 in roadbed and existing roadbed junction; 20-40 centimetre apart from the roadbed bottom surface of described U-shaped pipe 1, preferred 30 centimetres.
2) be tightly connected respectively at U-shaped pipe 1 two ends loop line pipe 3 and survey pipe 6, and at loop line pipe 3, U-shaped pipe 1 with survey in the pipe 6 and wear elongated lining rope 2; Described loop line pipe 3 with survey that pipe 6 be arranged in parallel and both axis are vertical with the circuit bearing of trend; Described loop line pipe 3 is steel pipe; Described survey pipe 6 has pvc pipe and its diameter and groove and the described sedimentometer 7(RQBF-698A of four axial notches for inner wall even distribution) upward the guide wheel of setting is suitable; Described survey pipe 6 is when burying underground, and wherein two groove opposite are presented down setting, arranges about two other is.Described survey pipe 6 and loop line pipe 3 outer ends exceed roadbed side slope 40-60 centimetre, preferred 50 centimetres.
The fine sand of 5-10 cm thick is laid in described survey pipe 6, loop line pipe 3 and U-shaped pipe 1 below.
When burying underground, at first to form the roadbed of compacting more than 30 centimetres at original ground, excavate 30 centimetres of dark grooves then, the width of groove is determined according to the diameter of surveying pipe 6 and loop line pipe 3, and in the groove that digs, lay the fine sand of 5-10 cm thick, the situation of sheared destruction took place when the effect of fine sand was to prevent to survey pipe 6 along with subgrade settlement; Loop line pipe 3 can adopt steel pipe, owing to steel pipe will be embedded in the roadbed for a long time, so it need take rust preventing; Next connects U-shaped pipe 1, loop line pipe 3 and survey pipe 6, connect for convenience, U-shaped pipe 1 can be arranged to the big and little structure of an end of an end, its two ends diameter adapts with loop line pipe 3 and survey pipe 6 diameters respectively, and the mode of pegging graft with employing between loop line pipe 3 and the survey pipe 6 is connected, survey pipe 6 and loop line pipe 3 and can adopt elongated structure, also can adopt syndeton, but it should be noted that, need take waterproof and anti-mud measure in the junction, interface among the present invention adopts the nonwoven fabrics parcel, and realize with the mode that plastic ties is tightened, to connect as one at last, and the inner survey pipe 6 that wears lining rope 2, U-shaped pipe 1 and loop line pipe 3 are put into the good groove of excavation, and continue roadbed filling.
Second step: subgrade settlement is widened in observation
1) sedimentometer 7 head ends and lining rope 2 being positioned at an end of surveying pipe 6 is connected;
2) sedimentometer 7 is put into survey pipe 6; Sedimentometer 7 is put into survey managed before 6, surveying the zeroing of pipe 6 pipe end places earlier, and with lower tumbler on the sedimentometer 7 and survey on the pipe 6 lower guide channel and cooperates to leave standstill after installing and begin measurement after 3-5 minute, the effect of leaving standstill is to make sedimentometer 7 and ground internal temperature to form balance, prevents from causing error because of temperature drift in the measuring process.
3) from loop line pipe 3 one ends pullings lining rope 2, sedimentometer 7 is moved inward from surveying pipe 6 outer ends, and every 30-70 centimetre pause is once, generally selects 50 centimetres of pauses once, and record is each when pausing on the display instrument 5 data presented;
4) return survey, and record data; When return surveying, drag sedimentometer 7 and move in the opposite direction, measure at interval and still select 50 centimetres, and will guarantee that measuring point is identical, with the elimination measuring error, can also adopt the method for duplicate measurements 2-3 time to guarantee the accuracy of measurement data.
The 3rd step: data preparation, analyze contrast and widen the full section sedimentation of roadbed situation, widen the settlement law that the full section sedimentation of roadbed situation can be reflected in roadbed in the work progress, in work progress, can take multiple measurements, analyze and sum up the full section settlement law of roadbed, for subgrade construction provides reference, also can guarantee to widen the stability of using behind the roadbed worker.
The external diameter of the pvc pipe that adopts among the present invention: 70mm; Internal diameter: 60mm; Guide groove is wide: 5mm; Guide groove is dark: 2mm; Pipe range: 4m; The model of sedimentometer is RQBF-698A, and its major parameter is:
System accuracy :≤0.1mm/500mm; System's resultnat accuracy :≤± 4mm/30m; Measurement range: 0 °～± 90 ° (with the angle of ground vertical line); Resolution: 2 " (0.04mm/m); Linear: ± 0.025% (in 30 °); Repeatability: ± 0.025%; Guide wheel spacing benchmark: 500mm.
Certainly; more than the selection of equipment and material is just selected according to the existing market situation; also be no lack of equipment that other models are arranged or the material of other structures and can more effectively bring into play effect of the present invention; but; no matter select which kind of sedimentometer or survey pipe, all belong to protection scope of the present invention.
Claims (3)
1. widen the full section settlement observation of roadbed method for one kind, it is characterized in that, may further comprise the steps:
The first step: bury sighting tube (6) underground
1) widening the horizontally embedded U-shaped pipe in roadbed and existing roadbed junction (1), 20-40 centimetre apart from the roadbed bottom surface of described U-shaped pipe (1);
2) be tightly connected respectively at U-shaped pipe (1) two ends loop line pipe (3) and survey pipe (6), the fine sand of 5-10 cm thick is laid in described survey pipe (6), loop line pipe (3) and U-shaped pipe (1) below, and wears elongated lining rope (2) in loop line pipe (3), U-shaped pipe (1) and survey pipe (6); Described survey pipe (6) manages (6) with U-shaped pipe (1) interface, loop line pipe (3) and U-shaped pipe (1) interface and survey or the nonwoven fabrics sealing is all used in loop line pipe (3) lengthening section junction, described loop line pipe (3) with survey that pipe (6) be arranged in parallel and both axis are vertical with the circuit bearing of trend, described survey pipe (6) and loop line pipe (3) outer end exceed roadbed side slope 40-60 centimetre;
Second step: subgrade settlement is widened in observation
1) sedimentometer (7) head end and lining rope (2) being positioned at an end of surveying pipe (6) is connected;
2) sedimentometer (7) is put into survey pipe (6), sedimentometer (7) is put into survey pipe (6) before, earlier surveying the zeroing of pipe (6) pipe end place, and sedimentometer (7) is gone up lower tumbler and surveyed pipe (6) and go up lower guide channel and cooperates to leave standstill after the installation and begin measurement after 3-5 minute;
3) from loop line pipe (3) one ends pullings lining rope (2), sedimentometer (7) is moved inward from surveying pipe (6) outer end, and every 30-70 centimetre pause once, and record is each when pausing, and display instrument (5) is gone up data presented;
4) return survey, and record data;
The 3rd step: data preparation, analyze contrast and widen the full section sedimentation of roadbed situation.
2. the full section settlement observation of the roadbed method of widening according to claim 1, it is characterized in that: described loop line pipe (3) is steel pipe; Described survey pipe (6) is suitable for inner wall even distribution has the pvc pipe of four axial notches and its diameter and groove and described sedimentometer (7) to go up the guide wheel that arranges; Described survey pipe (6) is when burying underground, and wherein two groove opposite are presented down setting, arranges about two other is.
3. the full section settlement observation of the roadbed method of widening according to claim 1, it is characterized in that: described lining rope (2) is wire rope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110423338 CN102519427B (en) | 2011-12-16 | 2011-12-16 | Method for observing settlement of full section of widened roadbed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110423338 CN102519427B (en) | 2011-12-16 | 2011-12-16 | Method for observing settlement of full section of widened roadbed |
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| CN102519427A CN102519427A (en) | 2012-06-27 |
| CN102519427B true CN102519427B (en) | 2013-08-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104316026B (en) * | 2014-10-27 | 2017-02-15 | 长沙理工大学 | Cross-section instrument sensor traction method in road widening roadbed |
| CN105926571B (en) * | 2016-04-19 | 2017-11-17 | 长沙理工大学 | Fixed horizontal inclination probe propulsion device for widened roadbed |
| CN107119658A (en) * | 2017-06-28 | 2017-09-01 | 福州大学 | Fill out and dig the horizontal deviational survey wire installation and construction method that combine settlement of subgrade |
| CN109269396A (en) * | 2018-11-22 | 2019-01-25 | 山东科技大学 | A kind of country rock inside vertical deformation measurement device and method |
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| CN201413138Y (en) * | 2009-06-22 | 2010-02-24 | 铁道第三勘察设计院集团有限公司 | Magnetic ring-type lamination and sedimentation horizontal testing system |
| CN202002639U (en) * | 2010-12-28 | 2011-10-05 | 广东省航盛建设集团有限公司 | Roadbed cross-section sedimentation observation device with magnetic ring positioning function |
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| US4003263A (en) * | 1974-05-20 | 1977-01-18 | Rourke John E O | Tube profile gage |
| JP2005331242A (en) * | 2004-05-18 | 2005-12-02 | Taisei Corp | Settlement measuring method for road surfaces |
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Patent Citations (2)
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|---|---|---|---|---|
| CN201413138Y (en) * | 2009-06-22 | 2010-02-24 | 铁道第三勘察设计院集团有限公司 | Magnetic ring-type lamination and sedimentation horizontal testing system |
| CN202002639U (en) * | 2010-12-28 | 2011-10-05 | 广东省航盛建设集团有限公司 | Roadbed cross-section sedimentation observation device with magnetic ring positioning function |
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