CN104060615B - Newly-built foundation pit supporting construction is utilized to remove the construction method of underground obstacle - Google Patents
Newly-built foundation pit supporting construction is utilized to remove the construction method of underground obstacle Download PDFInfo
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- CN104060615B CN104060615B CN201410247776.3A CN201410247776A CN104060615B CN 104060615 B CN104060615 B CN 104060615B CN 201410247776 A CN201410247776 A CN 201410247776A CN 104060615 B CN104060615 B CN 104060615B
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Abstract
The invention discloses a kind of construction method utilizing newly-built foundation pit supporting construction to remove underground obstacle, comprise the following steps: step one, the position of the particular location determining underground obstacle and the some root post stakes needing construction, at region smooth location of removing obstacles, casting concrete terrace; Step 2, stand column pile of constructing; Step 3, the first concrete support of construction foundation pit; Step 4, removes underground obstacle, until exposing undisturbed soil, backfill is native to 100mm under designed elevation at the bottom of second concrete support; Step 5, second concrete support of constructing; Step 6, adopts jet grouting pile driving machine, and the construction end, hole reinforces; Step 7, complement dewatering well, carry out base pit dewatering. Step 8, foundation ditch continues excavation construction. The construction method of the present invention, makes to remove obstacles in hole and excavation of foundation pit is synchronously performed, and not only decreases the duration, also reduces construction costs.
Description
Technical field
The present invention relates to the construction method removing underground obstacle in a kind of architectural engineering, particularly to one in architectural engineering pit excavation construction process, utilize the supporting construction of newly-built design of foundation pit as support system, the construction method of the original underground large obstacle in removing hole.
Background technology
Development along with urban construction; the exploitation of Reforming Center Urban Area and the underground space; often be faced with surrounding enviroment complexity, protection requires the difficult problems such as height, narrow field, underground obstacle are many, and original building is retained in the base component of underground becomes the obstacle before new building is constructed. Typically require and first the underground obstacle in place is removed obstacles.
Owing to being in area, down town, the removing of underground large obstacle is needed to carry out construction pit go along with sb. to guard him, prevent slope failure, barrier backfills after removing again, dismounting construction pit is gone along with sb. to guard him, smooth location, the engineering pile of new building of then constructing and foundation pit enclosure stake, finally ability excavation pit, underground structure of constructing.In this process, it may be desirable to doing twice foundation pit enclosure, after removing obstacles, backfilling of earthwork excavates again so that time duration is long, the waste on definite meaning is formed.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of construction method utilizing newly-built foundation pit supporting construction to remove underground obstacle, removes obstacles and excavates one-time-reach-place, conventional construction method is avoided to backfill after removing obstacles, go along with sb. to guard him again, excavate the waste caused, reduce the duration, reduce cost.
For achieving the above object, the newly-built foundation pit supporting construction that utilizes of the present invention removes the construction method of underground obstacle, comprises the following steps:
Step one, it is determined that the position of some root post stakes of the particular location of underground obstacle and needs construction, at region smooth location of removing obstacles, builds at least thick for 150mm concrete floor;
Step 2, stand column pile of constructing;
Step 3, adopts pick machine to abolish concrete floor and the underground obstacle of more than designed elevation at the bottom of first concrete support, the first concrete support of construction foundation pit;
Step 4, removes underground obstacle, until exposing undisturbed soil, backfill is native to 100mm under designed elevation at the bottom of second concrete support;
Step 5, second concrete support of constructing;
Step 6, adopts jet grouting pile driving machine, and the construction end, hole reinforces;
Step 7, the construction end, hole, has reinforced rear complement dewatering well, carries out base pit dewatering.
Step 8, foundation ditch continues excavation construction.
In described step one, the original engineering pile position of underground obstacle is avoided in the position of stand column pile 6, it is ensured that clear distance is 500mm at least.
The first concrete support in the described step 3 trestle plate in region of removing obstacles wouldn't be constructed, construction bridge plate again after the construction end, hole in step 6 has reinforced.
First concrete support in described step 3 has at least a hole reach 6m × 8m, pick machine can be made to pass through.
Described step 4 is removed in the process of underground obstacle, if underground obstacle 2 has a pile foundation, removing underground obstacle to the operation in backfill soil process is: removes obstacles and exposes old stake to push up → measure stake position → detection of pier foundation → backfill native to 100mm under designed elevation at the bottom of second concrete support.
Described step 4 is removed in the process of underground obstacle, it is divided into some sections along order of removing obstacles to construct, every sector width is not more than 15m, first remove the superstructure of underground obstacle, steel guidance tape is laid again on first concrete support, underground obstacle removed by pick machine on steel guidance tape, and the area of the underground space reaches 200m2After, a pick machine enters the bottom removing underground obstacle of first concrete support.
The construction end, hole of second concrete support and the step 6 of constructing in described step 5, reinforces sectional and carries out, after the second concrete support of one of them section has been constructed, namely arranging jet grouting pile driving machine on first concrete support, the construction end, hole carrying out this section, reinforces.
Effect of the invention is that: the newly-built foundation pit supporting construction that utilizes of the present invention removes the construction method of underground obstacle, make to remove obstacles in hole and excavation of foundation pit is synchronously performed, the work progress of whole underground engineering does not individually take the duration, few operations such as region supporting, backfill, excavation of removing obstacles than conventional construction method, reduce backfill, also just decrease the workload of the end, hole reinforcing, therefore not only decrease the duration, also reduce construction costs. And decreasing the duration is exactly shorten the time that foundation ditch exposes, it is possible to control preferably foundation pit enclosure deformation, reduce the impact on environment to greatest extent.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting full circle swinging obstacle cleaning machine targeted elimination stand column pile position underground obstacle;
Fig. 2 is the schematic diagram adopting pile-filling machine construction stand column pile;
Fig. 3 adopts pick machine to abolish the hardening terrace of more than first concrete support design end absolute altitude and the schematic diagram of barrier;
Fig. 4 is the schematic diagram of construction first concrete support;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the schematic diagram adopting pick crusher machine underground obstacle;
Fig. 7 is the schematic diagram of construction second concrete support;
Fig. 8 is the schematic diagram adopting reinforce the jet grouting pile driving machine construction end, hole;
Fig. 9 is that construction is removed obstacles the schematic diagram of trestle plate in region;
Figure 10 is the top view in Fig. 9 after the construction of trestle plate.
Detailed description of the invention
Referring to Fig. 1～10, the newly-built foundation pit supporting construction that utilizes of the present invention removes the construction method of underground obstacle, and step is as follows:
Step one, it is determined that the position of some root post stakes 6 of the particular location of underground obstacle and needs construction, at region smooth location of removing obstacles, builds at least 150mm thickness concrete floor 20. Passing through surveying setting-out, it is determined that the position of some root post stakes 6 of the particular location of underground obstacle and needs construction, stand column pile 6 top is lattice steel column, inserts in bored concrete pile at the end, hole. Here underground obstacle refers to original building basement. And making the position of stand column pile 6 avoid the original engineering pile of underground obstacle (also known as old pile foundation) position, it is ensured that clear distance is 500mm at least. Construction stand column pile 6 needs through underground obstacle 2 top board and base plate, and the building waste of inside. Stand column pile 6 position adopts RTP-350E full circle swinging obstacle cleaning machine 21 to remove to underground obstacle 2 lower 500mm, aperture 1000mm, big more than the 100mm of aperture ratio bored concrete pile diameter, adopts full circle swinging obstacle cleaning machine 21 targeted elimination stand column pile 6 position underground obstacle 2 as shown in Figure 1. Construction process: stand column pile location → obstacle cleaning machine is in place → hanging device is in place → sleeve pipe convolution press-in → convolution eccentric cutting → groove in draw water, backfill soil cement → densification → telephone-moving in clear soil → tunneling boring convolution cut-outs → handling barrier → hole and carry out next hole removing.
Step 2, adopts pile-filling machine 22 to construct stand column pile 6, as in figure 2 it is shown, bored concrete pile diameter 850mm. Position of removing obstacles arranges the steel thimble of full circle swinging obstacle cleaning machine 21, it is prevented that subsoil water enters in drill-pouring stake holes and causes slurry coat method denseness to decline, and causes hole wall collapse.
Step 3, adopts PC220 type to excavate pick machine 8 and abolishes concrete floor 20 and the indoor wall 3 of underground obstacle 2, the exterior wall 4 of more than first concrete support 1 end absolute altitude, and the first concrete support 1 of construction foundation pit, as shown in Fig. 3, Fig. 4 and Fig. 5. The trestle plate 12 in the non-region of removing obstacles on first concrete support 1 can first be constructed, and the trestle plate 13 in region of removing obstacles wouldn't be constructed, and joint (reserved construction joint) place reserves straight screw sleeve, the connection of trestle plate 13 in region of removing obstacles for construction in later period. Remove obstacles the hole between region supports need optimize, it is ensured that first concrete support 1 has a hole reach 6m × 8m, pick machine 10 can be made to pass through, sail into hole the end.
Step 4, removes underground obstacle, as shown in Figure 6. Begin with pick machine 8 from a vertex angle part to crush. In underground obstacle reset procedure, preferably, in accordance with excavation based on space, take reasonable partitioned mode, be conducive to quickening to remove obstacles speed, as shown in Figure 5, region of removing obstacles can be divided into some sections, be 3 sections shown in figure, namely 1st district in Fig. 5,2nd district, 3rd district, every sector width is not more than 15m.First remove the superstructure of underground obstacle 2, steel guidance tape 9 is laid again on first concrete support 1, underground obstacle 2 removed by pick machine 8 on steel guidance tape 9, after the area of the underground space reaches 200, one pick machine 10 enters the hole end (i.e. the bottom of first concrete support 1) and removes underground obstacle 2, until exposing undisturbed soil. If underground obstacle 2 has pile foundation, it is possible to remove with pick machine again when cutting the earth afterwards. In order to ensure the impact of old pile foundation that the high-pressure rotary jet grouting pile after removing obstacles and piling construction are not removed, or needing the old pile foundation utilized under underground obstacle 2, the operation in backfilling process of removing obstacles is: remove obstacles and expose old stake and push up → measure stake position → detection of pier foundation → backfill soil to 100mm under designed elevation at the bottom of second concrete support.
Step 5, second concrete support 7 of constructing. Region of removing obstacles in step 4 is divided into some sections when constructing, after one of region completes to remove obstacles can on backfill soil formwork, the second concrete support 7 in this region of constructing, as shown in Figure 7. When part second concrete support 7 completes, the pick machine 8 on first concrete support 1 continues broken underground obstacle 2, and in hole, pick machine 10 crushes below, and so closely broken effect is bigger than the effect at pick machine 8.
Step 6, adopts jet grouting pile driving machine 11, and the construction end, hole reinforces. After the second concrete support 7 in this region has been constructed, namely arranging jet grouting pile driving machine 11 on first concrete support 1, the construction end, hole, reinforces, as shown in Figure 8. The construction end, hole, reinforces can carry out with removing obstacles of other regions simultaneously. After second concrete support 7 has all been constructed, the plank 24 of laying depth 50mm on the backfill soil 23 of compacting in foundation ditch, plank 24 is set up framed bent 25, constructed residual is removed obstacles the remaining trestle plate 13 in region, as shown in Figures 9 and 10. Owing to trestle plate 13 is shelved on the beam of first concrete support 1, framed bent 25 can be removed after concrete strength reaches C20. But the trestle plate 13 newly watered is before being not reaching to design strength, it is impossible to load-bearing.
Step 7, the construction end, hole, has reinforced rear complement dewatering well, carries out base pit dewatering.
Step 8, foundation ditch continues excavation construction. Foundation ditch continues excavation construction, and conventionally construction method carries out subsequent construction.
Those skilled in the art will recognize that; above-mentioned detailed description of the invention is illustrative of; it is to enable those skilled in the art to be better understood from this patent content; should not be understood as the restriction to this patent protection domain; as long as any equivalent change made according to the disclosed spirit of this patent or modification, each fall within this patent protection domain.
Claims (1)
1. one kind utilizes the construction method that newly-built foundation pit supporting construction removes underground obstacle, it is characterised in that comprise the following steps:
Step one, it is determined that the position of some root post stakes of the particular location of underground obstacle and needs construction, the original engineering pile position of underground obstacle is avoided in the position of stand column pile, it is ensured that clear distance is 500mm at least; At region smooth location of removing obstacles, build at least thick for 150mm concrete floor; Stand column pile position adopts full circle swinging obstacle cleaning machine targeted elimination stand column pile position underground obstacle, construction process: stand column pile location → obstacle cleaning machine is in place → hanging device is in place → sleeve pipe convolution press-in → convolution eccentric cutting → groove in draw water, backfill soil cement → densification → telephone-moving in clear soil → tunneling boring convolution cut-out → handling barrier → hole and carry out next hole removing;
Step 2, utilizes the steel thimble of the full circle swinging obstacle cleaning machine of position setting of removing obstacles, and adopts pile-filling machine construction stand column pile;
Step 3, adopts pick machine to abolish concrete floor and the underground obstacle of more than designed elevation at the bottom of first concrete support, the first concrete support of construction foundation pit; First concrete support has at least a hole reach 6m × 8m, pick machine can be made to pass through;
Step 4, removes underground obstacle, until exposing undisturbed soil, backfill is native to 100mm under designed elevation at the bottom of second concrete support; Remove in the process of underground obstacle, if underground obstacle has a pile foundation, removing underground obstacle to the operation in backfill soil process is: removes obstacles and exposes old stake to push up → measure stake position → detection of pier foundation → backfill native to 100mm under designed elevation at the bottom of second concrete support; Removing in the process of underground obstacle, be divided into some sections along order of removing obstacles and construct, every sector width is not more than 15m; First removing the superstructure of underground obstacle, then lay steel guidance tape on first concrete support, underground obstacle removed by pick machine on steel guidance tape, and the area of the underground space reaches 200m2After, a pick machine enters the bottom removing underground obstacle of first concrete support;
Step 5, second concrete support of constructing;
Step 6, adopts jet grouting pile driving machine, and the construction end, hole reinforces;
Step 7, the construction end, hole, has reinforced rear complement dewatering well, carries out base pit dewatering;
Step 8, foundation ditch continues excavation construction;
The construction end, hole of second concrete support and the step 6 of constructing in described step 5, reinforces sectional and carries out, after the second concrete support of one of them section has been constructed, namely arranging jet grouting pile driving machine on first concrete support, the construction end, hole carrying out this section, reinforces;
The first concrete support in the described step 3 trestle plate in region of removing obstacles wouldn't be constructed, construction bridge plate again after the construction end, hole in step 6 has reinforced.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155516B (en) * | 2015-08-14 | 2016-11-30 | 江苏省华建建设股份有限公司 | The method of construction drill bored concrete pile before making an overall screening underground obstacle |
| CN105735383A (en) * | 2016-03-25 | 2016-07-06 | 上海建工四建集团有限公司 | Partial underground obstacle removing construction method capable of reserving structural system |
| CN109914507A (en) * | 2019-03-18 | 2019-06-21 | 上海市基础工程集团有限公司 | Abolish the device of underground obstacle under the conditions of deep-cutting |
| CN110173274A (en) * | 2019-05-31 | 2019-08-27 | 武汉市武昌市政建设(集团)有限公司 | A kind of head is removed obstacles method |
| CN110952916A (en) * | 2019-11-28 | 2020-04-03 | 武汉金瑞威基础工程有限公司 | Construction method for crushing and dismantling deep part of old building pile foundation |
| CN112538981A (en) * | 2020-11-26 | 2021-03-23 | 上海建工四建集团有限公司 | Old building basement obstacle removing and new building pile foundation synchronous construction method |
| CN113322965A (en) * | 2021-06-11 | 2021-08-31 | 中国建筑第八工程局有限公司 | Deep foundation clearing construction method for near-subway deep foundation pit |
| CN114753381B (en) * | 2022-05-23 | 2024-09-17 | 中铁七局集团郑州工程有限公司 | Method for removing underground barriers in non-excavation construction path range in limited space |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN103410153A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Adjacent deep foundation trench and shallow foundation trench synchronous construction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3075397B2 (en) * | 1997-06-27 | 2000-08-14 | 株式会社ケー・スタッフ | Mobile earth retaining device and method of avoiding underground obstacles using the earth retaining device |
-
2014
- 2014-06-05 CN CN201410247776.3A patent/CN104060615B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN103410153A (en) * | 2013-08-30 | 2013-11-27 | 南通八建集团有限公司 | Adjacent deep foundation trench and shallow foundation trench synchronous construction method |
Non-Patent Citations (4)
| Title |
|---|
| "上海外滩通道综合改造工程中的深层障碍物清除技术";葛国华;《建筑施工》;20101130;第32卷(第11期);第1102-1103页第0-4节 * |
| "复杂环境下大型地下障碍物处理技术";汪前等;《施工技术》;20130430;第42卷(第7期);第40-42页第1-7节 * |
| "大型地铁枢纽站施工中的地下障碍物拆除及车站结构逆作施工技术";顾亚囝等;《建筑施工》;20080531;第30卷(第5期);第342-344页第1-4节 * |
| "钻孔切割法清除地下障碍物的施工技术";徐建伟;《建筑施工》;20130328;第35卷(第1期);第26-28页第1-6节 * |
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