CN105200878A - Roadbed and inspection well differential settlement control construction method - Google Patents
Roadbed and inspection well differential settlement control construction method Download PDFInfo
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- CN105200878A CN105200878A CN201510554128.7A CN201510554128A CN105200878A CN 105200878 A CN105200878 A CN 105200878A CN 201510554128 A CN201510554128 A CN 201510554128A CN 105200878 A CN105200878 A CN 105200878A
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Abstract
The invention relates to a roadbed and inspection well differential settlement control construction method, and belongs to the technical field of road construction. The roadbed and inspection well differential settlement control construction method comprises the following steps of (1) roadbed filling: digging slopes into ladder shapes, and carrying out layered filling and dense grinding according to the varieties of soil; (2) pipe channel construction: setting one water collecting well, digging a pipe channel to designed elevation, stably placing pipelines, and performing a pipeline leakproofness closed water test for once after the construction of a section of pipeline is completed every time; (3) inspection well construction: tamping a foundation soil layer of the inspection well by adopting a pounder, and then carrying out foundation construction of a cushion layer and reinforced concrete; (4) backfilling: backfilling the pipeline channel by adopting medium-coarse sand, and compacting in layers; backfilling the periphery of the inspection well by adopting aggregate and dust or sand; (5) roadbed top surface construction: densely grinding by adopting a vibrating type road roller of which the weight is more than 12t until the surface has no obvious wheelmarks. According to the roadbed and inspection well differential settlement control construction method disclosed by the invention, the roadbed is compact, the roadbed is stably matched with the pipelines and the inspection well, and the inspection well is not easy to collapse.
Description
Technical field
The present invention relates to technical field of road construction, be specifically related to a kind of roadbed and manhole difference settlement control construction method.
Background technology
In urban road, manhole periphery sinks and breakage, cause road surface " rotten eyelet " phenomenon, it is a kind of common common quality defect, cause jumping car during vehicle normal pass, cause surface course sinking, be full of cracks, breakage further, crib and superelevation of highway surface value excessive, main cause is different parts Subgrade Compaction, draining, filler moisture content, also have in addition manhole based process, well room (cylinder) are built by laying bricks or stones, the detailed treatment at the position such as borehole wall periphery backfill.
Summary of the invention
Object of the present invention is to solve the problem, and provides a kind of roadbed sturdy, coordinates stable with pipeline and manhole, and the not givey construction method of manhole.
The technical scheme that the present invention solves the problem is as follows:
A kind of roadbed and manhole difference settlement control construction method, comprise the steps:
1. roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 0.7-1.3m, then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit;
2. pipe groove construction: be not more than a well segment limit in trench length and arrange place's collecting well, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, often complete one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
3. manhole construction: first manhole foundation bed is adopted hammer ram compacting before construction, then carry out bed course and reinforced concrete foundation construction;
4. backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
5. roadbed end face construction: carry out king-pile recovery to road, uniform filling is filled up smooth along manhole week, adopts more than 12t vibrating roller grinding compacting, should carry out piecemeal, roll to surface without obvious wheelmark when rolling from roadside to road.
Preferred as technique scheme, step 1. in every grade of shoulder height be 1m, bench floor slopes inwardly.
Preferred as technique scheme, step 1. in every layer of native filling-up thickness be less than 40cm, be less than 30cm after compacting, roadbed filling compaction plane both sides are 50cm wider than design width respectively.
Preferred as technique scheme, step 1. in, fill in scope when having pipe works, soil layer filled height should higher than pipeline highest point at least 50cm, and through more than 12 tons heavy road roller grinding compactings.
Preferred as technique scheme, step 2. in, polyethylene pipe pipe heelpiece sand before laying should adopt plate vibration machine to flatten compacting, and pipeline avris backfills medium coarse sand in time with stable pipeline.
Preferred as technique scheme, step 4. in, the jolt ramming of small vibrating machine is adopted to medium coarse sand, and sprays water on a small quantity in vibration processes, make medium coarse sand packing course in conjunction with closely knit.
Preferred as technique scheme, step 5. in, packing material size is not more than 10cm.
Preferred as technique scheme, step 5. in, road roller does not collide borehole wall extruding walling crib, road roller construction less than position, make separate arrangements small vibrating rolling compaction machine or frog rammer, coordinate the synchronous compacting of roadbed.
Preferred as technique scheme, step 1. before also comprise road repetition measurement step.
Preferred as technique scheme, road repetition measurement step comprises traverse testing survey, check survey of centre line, bench mark repetition measurement.
Traverse testing survey: according to design data, conscientiously carries out traverse testing survey work, adopting through checking the infrared range-measurement system meeting corresponding precision edited, answering traverse station to encrypt if desired, can mutual intervisibility to ensure implementing consecutive points in overall process at road.Certainty of measurement is except being designed with particular/special requirement, and angle is closed poor (" entirely) requirement of ± 16 √ n (n is measuring point number) and relative closing error ± 1/10000 of coordinate should be met.After repetition measurement wire, must with the traverse closure of adjacent construction section.
Check survey of centre line: first should check comprehensively and recover centre mark, route major control stake, as intersection point, turning point, the rising of circular curve and easement curve, settled point.The deviation of center line of road position should control within 5 ㎜: during employing DJ2 level instrument, angle at least surveys a survey time; During employing DJ6 level instrument, angle at least surveyed for two survey time; The common steel ruler of distance comes and goes survey one survey time, or electromagnetic distance measuring instrument can one way measure.
Bench mark repetition measurement: check the bench mark checked Construction unit and pay, and determine bench mark as far as possible with state closed.Construction measurement of the level between adjacent 2 years vertical control points, should adopt contact level measuring method.Urban road temporary bench mark should close with design bench mark repetition measurement, and it allows closing error through street, major trunk roads are ± 12 √ L ㎜, and branch road is ± 20 √ L ㎜.Bench mark spacing is not more than 1 ㎞ temporary bench mark and should adopts 200 ~ 300m arrange one in urban district.
In sum, the present invention has following beneficial effect:
1. a kind of roadbed of the present invention and manhole difference settlement control construction method roadbed are in a down-to-earth manner, coordinate stable with pipeline and manhole;
2. a kind of roadbed of the present invention and manhole difference settlement control construction method manhole not easily subside.
Accompanying drawing explanation
Fig. 1 is rendzinas subgrade construction process chart described in embodiment 1 and embodiment 2;
Fig. 2 is rendzinas subgrade construction process chart described in embodiment 3 and embodiment 4.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Embodiment in the present invention, those of ordinary skill in the art, not doing other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, with embodiment, the present invention is described in detail.
Embodiment 1: a kind of roadbed and manhole difference settlement control construction method, comprise the steps:
1. roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 1m, bench floor slopes inwardly, and then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit;
2. pipe groove construction: be not more than a well segment limit in trench length and arrange place's collecting well, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, often complete one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
3. manhole construction: first manhole foundation bed is adopted hammer ram compacting before construction, then carry out bed course and reinforced concrete foundation construction;
4. backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
5. roadbed end face construction: king-pile recovery is carried out to road, uniform filling is filled up smooth along manhole week, and packing material size is not more than 10cm, adopts more than 12t vibrating roller grinding compacting, should carry out piecemeal to road from roadside when rolling, roll to surface without obvious wheelmark.
Embodiment 2: a kind of roadbed and manhole difference settlement control construction method, comprise the steps:
1. roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 0.7m, bench floor slopes inwardly, then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit, every layer of native filling-up thickness is less than 40cm, is less than 30cm after compacting, and roadbed filling compaction plane both sides are 50cm wider than design width respectively;
2. pipe groove construction: be not more than a well segment limit in trench length and arrange place's collecting well, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, often complete one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
3. manhole construction: first manhole foundation bed is adopted hammer ram compacting before construction, then carry out bed course and reinforced concrete foundation construction;
4. backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers, adopts the jolt ramming of small vibrating machine to medium coarse sand, and sprays water on a small quantity in vibration processes, make medium coarse sand packing course in conjunction with closely knit; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
5. roadbed end face construction: king-pile recovery is carried out to road, uniform filling is filled up smooth along manhole week, and packing material size is not more than 10cm, adopts more than 12t vibrating roller grinding compacting, should carry out piecemeal to road from roadside when rolling, roll to surface without obvious wheelmark.
Embodiment 3: a kind of roadbed and manhole difference settlement control construction method, first carry out repetition measurement to road, comprise traverse testing survey, check survey of centre line and bench mark repetition measurement, the Specific construction after retest-ok comprises the steps:
1. roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 1.3m, then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit, every layer of native filling-up thickness is less than 40cm, be less than 30cm after compacting, roadbed filling compaction plane both sides are 50cm wider than design width respectively;
2. pipe groove construction: be not more than a well segment limit in trench length and arrange place's collecting well, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, often complete one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
3. manhole construction: first manhole foundation bed is adopted hammer ram compacting before construction, then carry out bed course and reinforced concrete foundation construction;
4. backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
5. roadbed end face construction: king-pile recovery is carried out to road, uniform filling is filled up smooth along manhole week, packing material size is not more than 10cm, adopt more than 12t vibrating roller grinding compacting, should carry out piecemeal to road from roadside when rolling, roll to surface without obvious wheelmark, road roller does not collide borehole wall extruding walling crib, road roller construction less than position, make separate arrangements small vibrating rolling compaction machine or frog rammer, coordinate roadbed synchronous compacting.
Embodiment 4: a kind of roadbed and manhole difference settlement control construction method, first carry out repetition measurement to road, comprise traverse testing survey, check survey of centre line and bench mark repetition measurement, the Specific construction after retest-ok comprises the steps:
1. roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 0.9m, then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit, fill in scope when having pipe works, soil layer filled height should higher than pipeline highest point at least 50cm, and through more than 12 tons heavy road roller grinding compactings;
2. pipe groove construction: be not more than a well segment limit in trench length and one place's collecting well is set, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, polyethylene pipe pipe heelpiece sand before laying should adopt plate vibration machine to flatten compacting, and pipeline avris backfills medium coarse sand in time with stable pipeline, often completes one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
3. manhole construction: first manhole foundation bed is adopted hammer ram compacting before construction, then carry out bed course and reinforced concrete foundation construction;
4. backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers, adopts the jolt ramming of small vibrating machine to medium coarse sand, and sprays water on a small quantity in vibration processes, make medium coarse sand packing course in conjunction with closely knit; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
5. roadbed end face construction: king-pile recovery is carried out to road, uniform filling is filled up smooth along manhole week, packing material size is not more than 10cm, adopt more than 12t vibrating roller grinding compacting, should carry out piecemeal to road from roadside when rolling, roll to surface without obvious wheelmark, road roller does not collide borehole wall extruding walling crib, road roller construction less than position, make separate arrangements small vibrating rolling compaction machine or frog rammer, coordinate roadbed synchronous compacting.
Claims (10)
1. roadbed and a manhole difference settlement control construction method, is characterized in that: comprise the steps:
Roadbed filling: side slope is scraped out the stepped of convenient overlap joint, every grade of shoulder height 0.7-1.3m, then according to the kind placement in layers of the soil that will fill, layer-by-layer rolling is closely knit;
Pipe groove construction: be not more than a well segment limit in trench length and arrange place's collecting well, to discharge groove ponding, pipe trench groove digs to design altitude, pipeline is laid firmly, often complete one section of pipeline construction, make a pipeline leakproofness closed-water test, finding leaks fills up in time;
Manhole is constructed: first manhole foundation bed is adopted hammer ram compacting before construction, then carries out bed course and reinforced concrete foundation construction;
Backfill: adopt medium coarse sand backfill pipeline groove, by the bottom of pipe, thoracic cavity, the different parts back-filling in layers of pipe top, compaction in layers; Adopt sandstone dirt or system sand to backfill manhole periphery, build rising by laying bricks or stones with the borehole wall during backfill, successively by the tamping of manhole outer ring, filler virtual resurfacing thickness is not more than 20 ㎝, within the scope of the 60-80cm of manhole outer ring, adopts small vibrating to grind or frog rammer compacting;
Roadbed end face is constructed: carry out king-pile recovery to road, uniform filling is filled up smooth along manhole week, adopts more than 12t vibrating roller grinding compacting, should carry out piecemeal, roll to surface without obvious wheelmark when rolling from roadside to road.
2. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, is characterized in that: step 1. in every grade of shoulder height be 1m, bench floor slopes inwardly.
3. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, is characterized in that: step 1. in every layer of native filling-up thickness be less than 40cm, be less than 30cm after compacting, roadbed filling compaction plane both sides are 50cm wider than design width respectively.
4. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, it is characterized in that: step 1. in, fill in scope when having pipe works, soil layer filled height should higher than pipeline highest point at least 50cm, and through more than 12 tons heavy road roller grinding compactings.
5. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, it is characterized in that: step 2. in, polyethylene pipe pipe heelpiece sand before laying should adopt plate vibration machine to flatten compacting, and pipeline avris backfills medium coarse sand in time with stable pipeline.
6. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, is characterized in that: step 4. in, the jolt ramming of small vibrating machine is adopted to medium coarse sand, and sprays water on a small quantity in vibration processes, make medium coarse sand packing course in conjunction with closely knit.
7. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, is characterized in that: step 5. in, packing material size is not more than 10cm.
8. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, it is characterized in that: step 5. in, road roller do not collide the borehole wall extruding walling crib, road roller construction less than position, to make separate arrangements small vibrating rolling compaction machine or frog rammer, coordinate the synchronous compacting of roadbed.
9. a kind of roadbed according to claim 1 and manhole difference settlement control construction method, is characterized in that: 1. step also comprises road repetition measurement step before.
10. a kind of roadbed according to claim 9 and manhole difference settlement control construction method, is characterized in that: road repetition measurement step comprises traverse testing survey, check survey of centre line, bench mark repetition measurement.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107165251A (en) * | 2017-07-03 | 2017-09-15 | 杭州木兰园林绿化工程有限公司 | A kind of construction method of drainage system |
| CN107178020A (en) * | 2017-05-24 | 2017-09-19 | 浙江明通建设工程有限公司 | A kind of road drainage construction method |
| CN107245994A (en) * | 2017-06-27 | 2017-10-13 | 中铁第四勘察设计院集团有限公司 | It is a kind of based on pre-judging method of the deep foundation pit precipitation to high ferro roadbed safety effects |
| CN110685203A (en) * | 2019-09-19 | 2020-01-14 | 杭州南岳建设工程有限公司 | Method for ensuring compactness of periphery of gully of inspection well |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107178020A (en) * | 2017-05-24 | 2017-09-19 | 浙江明通建设工程有限公司 | A kind of road drainage construction method |
| CN107245994A (en) * | 2017-06-27 | 2017-10-13 | 中铁第四勘察设计院集团有限公司 | It is a kind of based on pre-judging method of the deep foundation pit precipitation to high ferro roadbed safety effects |
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| CN110685203A (en) * | 2019-09-19 | 2020-01-14 | 杭州南岳建设工程有限公司 | Method for ensuring compactness of periphery of gully of inspection well |
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