CN103821149A - Large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method - Google Patents
Large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method Download PDFInfo
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- CN103821149A CN103821149A CN201410074356.XA CN201410074356A CN103821149A CN 103821149 A CN103821149 A CN 103821149A CN 201410074356 A CN201410074356 A CN 201410074356A CN 103821149 A CN103821149 A CN 103821149A
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Abstract
The invention discloses a large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method, which is characterized in that the earthwork digging comprises the following steps including 1, first layer earthwork digging: the first layer earthwork digging is potted digging; 2, second layer earthwork digging: the second layer earthwork digging is slope remaining digging; 3, third layer earthwork digging: a method that a concrete earthwork slope passage is arranged at the left side of a middle trestle and an automobile directly runs into the passage for loading soil is adopted; 4, slope remaining part earthwork digging; 5, pit-in-pit earthwork digging; 6, pit-in-pit concrete casting construction after the pit-in-pit earthwork digging completion. The large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method has the advantages that the concrete post casting construction method is adopted, the construction difficulty is small, the cost is low, in addition, the construction period is short, and the risk is low.
Description
Technical field
The present invention relates to the construction of large-scale deep foundation ditch.
Background technology
All the time, the construction cost control of large-scale deep foundation ditch and safety become the Focal point and difficult point of developer and unit in charge of construction, due to the large-scale deep pit digging degree of depth and area all larger, and all more in downtown urban land, therefore Foundation Pit Support Design and unit in charge of construction all adopt the method that more conservative support supporting and trestle fetch earth, and large-scale deep foundation ditch generally also needs at elevator shaft position down to dig 3～5 meters more more, if construct again and dig the base plate conventional process flow of the depth compared with position, deep base plate according to first constructing, like this foundation pit construction not and the cycle grow up to Ben Gao and also foundation ditch open-assembly time long construction risk large,
Summary of the invention
Technical problem to be solved by this invention be just to provide a kind of large-scale deep foundation ditch stay slope cut the earth and hole in water construction after cheating concrete, difficulty of construction is little, cost is low and short construction period, risk are little.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: large-scale deep foundation ditch stay slope cut the earth and hole in water construction after cheating concrete, comprise the process of soil excavation, it is characterized in that: soil excavation comprises the steps:
Step 4, the soil excavation at Liu Po position, the soil excavation at Liu Po position is that fortune is dug in the earthwork of car ramp position, takes limit to dig the method for just removing, ramp surface layer concrete is taked pick crusher machine;
Step 5, cheats soil excavation in hole, in hole, beyond hole, after underplate concrete pouring construction, excavate again, takes tower crane to coordinate small-sized excavator to fetch earth;
Step 6, cheats in hole in cheating after soil excavation completes and cheats concrete pouring construction.
Preferably, when first floor soil excavation, foundation ditch is divided into two parallel shovelings of while of thing to the position muck haulage of middle trestle, and synchronous construction side slope position spray anchor, when excavation supports absolute altitude to first, just support to centre construction first from east-west direction, finally from south orientation north Construction Support trestle, when two constructions of thing, take to concentrate to centre from North and South direction the form of excavation simultaneously.
Preferably, the 3rd layer of soil excavation taked drawing Soil-nailed the soil body of below, concrete ramp, binding reinforcement net and C20 sprayed mortar bank protection.
Preferably, in hole, beyond hole, underplate concrete will stay and establish constuction joint before building, be provided with the shaped steel of one long 4m at constuction joint position, vertically place on the edge of a wing, and add the sealing steel disc that twice round in centre, seal impervious setting up defences, the constuction joint of the concrete cross section of the concavo-convex zigzag fashion of twice is set in short transverse, extend infiltration path and improve shear stiffness.
Construction of the present invention has adopted the reverse thinking in work progress, utilizes dell position base plate in addition to construct in advance as one support system of pattern foundation pit supporting structure.In shoveling method, adopt a shoveling passage that leads to foundation ditch inside is set, make digging machine can directly reach the entrucking of cutting the earth of foundation ditch inside, on construction cost, save like this expense of one horizontal support of constructing, and shoveling speed in ramp is fast, high efficiency, more be conducive to the speed of application of foundation ditch, reduce the security risk of deep foundation pit construction, Safety Construction of Deep Foundation Pit has also been had to larger help, there is certain economic and social benefit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is first floor soil excavation flow graph;
Fig. 2 is that the ramp that the second layer stays slope to cut the earth is stayed and established and excavate the flow direction;
Fig. 3 is that the 3rd layer of ramp of staying slope to cut the earth stayed and established and excavate the flow direction;
Fig. 4 is the 3rd layer of generalized section of staying slope to cut the earth;
In figure, 1 for first supports, and 2 for second supports, and 3 is middle trestle.
The specific embodiment
The engineering object of suitable engineering method is mainly cutting depth and is greater than 10 meters, and supporting and protection structure adopts the above base pit engineering of one-level that horizontal support and duration are tight, the more safety requirements of periphery pipeline building is high, the slope gradient (1:10) is stayed in the setting of having ready conditions.Be specially adapted to elevator shaft be arranged on foundation ditch middle part and elevator shaft position again than periphery foundation ditch position soil excavation deeply more than soil excavation and the foundation pit construction of 5 meters of above base pit engineerings.
This construction is in the time of large-scale deep foundation pit construction, to adopt to stay the earthwork of cutting the earth in slope to dig transportation method, adopt and current ramp one direct line of an earthwork car is set fetches earth to carrying out entrucking bottom foundation ditch when pit earthwork digs certain degree of depth (after general 10 meters), and by the adjustment of depth foundation pit construction sequencing, the base plate of dell periphery of first constructing (waters constuction joint after one special base plate is set when construction: constuction joint is arranged to concave-convex, and set up the sealing steel disc that shearing resistance shaped steel and twice round in middle part, seal impervious setting up defences, template construction to constuction joint simultaneously, the processing on constuction joint surface, constuction joint concrete curing, in hole, cheat concreting etc. and carry out technical finesse), utilize one horizontal support of this base plate as pattern foundation pit supporting structure, Zhong Keng position, the way construction hole base plate that recycling tower crane etc. fetches earth reaches Safety Construction of Deep Foundation Pit, high-quality and efficient, reduce costs object.Soil excavation comprises the steps:
As shown in Figure 1, first floor soil excavation is basin excavation, directly digs to first support base absolute altitude from natural terrace.For accelerating construction progress, according to job site actual conditions, foundation ditch is divided into two parallel shovelings of while of thing to the position muck haulage of middle trestle, and synchronous construction side slope position spray anchor.When excavation supports absolute altitude to first, just support to centre construction first from east-west direction, finally from south orientation north Construction Support trestle.When two constructions of thing, take to concentrate to centre from North and South direction the form of excavation simultaneously.
As shown in Figure 2, second layer soil excavation, for staying slope excavation, adopts, at east-west direction, a shoveling ramp is respectively set, and flows to layering and cuts the earth to second support base absolute altitude, construction second concrete support take middle trestle as line of demarcation according to excavation.Now support last formation near the second under shoveling ramp, north side.
As shown in Figure 3 and Figure 4, the 3rd layer of soil excavation arranges one article of concrete earthwork ramp for adopting in middle trestle left side, and the method into the in-built soil in hole directly driven by automobile.Now second supports all and forms, could form ramp near needing backfill to put in the support of position, ramp, because the earthwork of car ramp downside is backfill, easily produce landslide, therefore need the soil body that ramp is transferred to take reinforcement measure, reinforcement measure is to drawing soil nailing.Soil nailing adopts steel pipe Ф 48 × 3.0 × 1200, effective length 6～9m, binding reinforcement net and C20 sprayed mortar bank protection.
Step 4, the soil excavation at Liu Po position;
Last soil excavation is that fortune is dug in the earthwork of car ramp position.When position, both sides soil excavation when absolute altitude, starts to carry out the soil excavation at car ramp position to the end, large area hole of foundation ditch.Now ramp takes limit to dig the method for just removing, ramp surface layer concrete is taked pick crusher machine, adopt a 1m3 excavator to retreat to foundation ditch limit, north side while digging, hole limit surplus earth because of the degree of depth larger, adopt 1m3 excavator cannot continue to fetch earth, just change an extension arm excavator and rest in trestle position, north side and fetch earth, until all the earthwork to dig fortune complete.
Step 5, cheats soil excavation in hole;
Last soil excavation digs fortune for cheating the earthwork of Zhong Keng position.Stable for guaranteeing foundation ditch, the earthwork of cheating in hole requires to excavate after the large-area construction of bottom plates of foundation ditch again.Therefore, when in hole, excavate in hole, the base plate of its surrounding has been constructed complete, and Zhong Keng position, hole area is narrow and small, and the dell bottom surface absolute altitude discrepancy in elevation is larger from large-area backplane face absolute altitude to hole, earth volume is more, now cannot take the form of staying slope and trestle to cut the earth, and adopt tower crane to coordinate small-sized excavator excavation and construction speed greatly to lower.Staying slope shoveling staged construction organization arrangement to dig out 1.8m by down the Zhong Keng position earthwork of this hole, to reduce dell excavation quantities, make the last left small part earthwork more for this reason.Like this, take tower crane to coordinate small-sized excavator to fetch earth and greatly shortened the duration.Specific construction is such: adopt 0.3m3 excavator to coordinate the suspension bucket of two 1.2m3, use the muck haulage vehicle of tower crane handling to top, hole.Now needing to adopt mobile crane that the little shoveling function of about 5t is delivered to smoothly and hung out in hole cheats.
Step 6, cheats in hole in cheating after soil excavation completes and cheats concrete pouring construction, it should be noted that:
1, in hole, cheat the setting of concrete structure construction seam, how to stay and to establish constuction joint at super thick base plate, safety to structure and quality are all a great problems, must be how to guarantee construction quality and the constructability emphasis as discussion in the time considering that staying of constuction joint established, in order to solve shearing resistance and the seepage resistance demand of setting-up of construction joint, this engineering method has been set up the shaped steel 350 × 350 × 12 × 19 of long 4m together at constuction joint position, spacing 1m, vertically place on the edge of a wing.And add the sealing steel disc that twice-400mm × 4mm rounds in centre, seal impervious setting up defences, simultaneously by constuction joint region base plate thickening 400mm.The constuction joint of the concrete cross section of the concavo-convex zigzag fashion of twice is set in short transverse, extends infiltration path and improve shear stiffness.
2, in hole, cheat the construction of constuction joint template;
Intensity, rigidity and the stability of so thick base plate template is the key that guarantees concrete pouring quality, must formulate the special shuttering supporting scheme of constuction joint to engineering, and concrete technical essential is as follows:
The template of A, general place adopts multilayer nine clamping plate, for 400mm base plate thickening position, due to reinforcing bar is closeer cannot formwork, adopting three layers, to exempt from form removal body ater-casting special be gauze wire cloth, outside use ф 161 × 00mm steel reinforcing.
The inner side of B, template arranges one thick cystosepiment XPS of 50mm insulation layer as side direction underplate concrete; Outside, 400mm thickening position uses gunnysack jam-pack as insulation layer.
C, back cord are adopted steel pipe 2 φ 48 × 3.0mm, Screw arbor with nut at both-ends φ 14mm; Vertical supporting vertical rod adopts L100mm × 10mm angle steel of spacing 450mm, and inner side is connected on the main muscle of engineering pile and sockets with steel bar welding, and this column is held concurrently as bottom plate steel bar support use.
［ 18 channel-section steels × 2000mm is with engineering pile firm supporting with two for D, outside.
E, inner side adopt three road ф 16 × 2000mm reinforcing bars and engineering pile welding to draw anchor; ［ 10 channel-section steels directly support to two side templates, to increase the integral rigidity of template in bight employing.
F, shearing resistance shaped steel inner side adopt L100mm × 10mm shaped steel to support, and outside adopts scaffold to support.
3, in hole, cheat the concrete maintenance measure of constuction joint;
Super thick concrete floor belongs to concrete in mass, its maintenance scheme is through calculating the maintenance scheme that has adopted 3 layers of gunnysack 2 layer film, because constuction joint rotation angle position calculation of temperature stresses is larger, so 4m scope increases 1 layer of gunnysack and film on the basis that adopts 3 layers of gunnysack double-layer films again around this position.When the insulation layer construction of constuction joint starts, consider the thick XPS cystosepiment of 50mm of template inner side, after underplate concrete is built, hang up 3 layers of gunnysack again in template outside, 400mm base plate thickening position also adopts the plug gunnysack insulated curing that waters.
4, in hole, cheat the processing on constuction joint surface;
The surfacing of constuction joint is carried out after base plate insulated curing finishes, because constuction joint side adopts multiply plywood formwork, casting and compacting of concrete rear surface smoother, therefore must be with manually carrying out surperficial dabbing, particularly the concrete surface laitance at steel plate for sealing water and shearing resistance shaped steel position is more, after form removal, cleans out in time.After concrete dabbing, rinse well with giant.When pouring concrete is constructed after dell part, connect slurry by the cement mortar of identical concrete grating.
5, the concreting in hole in hole
Because large-area backplane surface and the dell bottom surface discrepancy in elevation reach more than 10m, concrete structure reinforcing bars configuration is wherein many, arrange and close, for making concrete directly blanking from above, and prevent segregation phenomenon, improve disposable efficiency of watering high oscillating column pump while smashing, the author has formulated special constructure scheme, reserve in advance the manhole of a 500mm × 500mm by top layer reinforcing bar, make workman can under to the operation of vibrating on bottom reinforced mesh, pump line access is cheated to position, bottom like this after the about 2m of concreting simultaneously, just progressively remove the pump line that stretches into reinforced mesh inside, upwards construction gradually thus, complete the concrete construction of large thickness.This scheme has not only solved concrete disintegration problem but also has guaranteed concrete vibrating quality, and has accelerated speed of application.Take for constuction joint position one side the measure of repeatedly vibrating, when before the complete about 2h(initial set of first floor concrete vibrating) repeating to vibrate to improve the compactness that New-old concrete connects near constuction joint position again.
The advantage of construction of the present invention is:
1, whole foundation ditch can be divided into two foundation pit constructions of size, first construct to the large area hole end absolute altitude of foundation ditch, and then cheat part in construction hole;
2, pit earthwork excavation is first constructed periphery compared with superficial part position, has reduced the disposable long risk of dark large, long construction period, foundation ditch open-assembly time of digging, and because periphery base plate first waters, can earlier form support system, and Safety Construction of Deep Foundation Pit has obtained powerful guarantee;
3, adopt and stay the slope digging machine can the direct entrucking of excavator, reduced and in hole, fallen native time and mechanical one-shift;
4, reduce the concrete engineering quantity of base plate one-time-concreting, provide powerful guarantee for complete base plate on schedule;
5, after the base plate of deep foundation ditch dell position, water in pattern foundation pit supporting structure angle and consider can save one horizontal support.Utilize dell position sole plate in addition to construct to supporting and protection structure exterior wall as one horizontal support;
6, after the base plate of dell position, water, can accelerating construction progress, directly save construction and the dismounting time of one horizontal support.
Claims (4)
- Large-scale deep foundation ditch stay slope cut the earth and hole in water construction after cheating concrete, comprise the process of soil excavation, it is characterized in that: soil excavation comprises the steps:Step 1, first floor soil excavation, first floor soil excavation is basin excavation, directly digs to first support base absolute altitude from natural terrace;Step 2, two layers of soil excavation, two layers of soil excavation, for staying slope excavation, adopt, at east-west direction, a shoveling ramp are respectively set, and flow to layering and cut the earth to second support base absolute altitude, construction second concrete support take middle trestle as line of demarcation according to excavation;Step 3, the 3rd layer of soil excavation, the 3rd layer of soil excavation arranges one article of concrete earthwork ramp for adopting in middle trestle left side, and the method into the in-built soil in hole directly driven by automobile;Step 4, the soil excavation at Liu Po position, the soil excavation at Liu Po position is that fortune is dug in the earthwork of car ramp position, takes limit to dig the method for just removing, ramp surface layer concrete is taked pick crusher machine;Step 5, cheats soil excavation in hole, in hole, beyond hole, after underplate concrete pouring construction, excavate again, takes tower crane to coordinate small-sized excavator to fetch earth;Step 6, cheats in hole in cheating after soil excavation completes and cheats concrete pouring construction.
- Large-scale deep foundation ditch according to claim 1 stay slope cut the earth and hole in water construction after cheating concrete, it is characterized in that: when first floor soil excavation, foundation ditch is divided into two parallel shovelings of while of thing to the position muck haulage of middle trestle, and synchronous construction side slope position spray anchor, when excavation supports absolute altitude to first, just support to centre construction first from east-west direction, finally from south orientation north Construction Support trestle, when two constructions of thing, take to concentrate to centre from North and South direction the form of excavation simultaneously.
- Large-scale deep foundation ditch according to claim 2 stay slope cut the earth and hole in water construction after cheating concrete, it is characterized in that: the 3rd layer of soil excavation taked drawing Soil-nailed the soil body of below, concrete ramp, binding reinforcement net and C20 sprayed mortar bank protection.
- Large-scale deep foundation ditch according to claim 3 stay slope cut the earth and hole in water construction after cheating concrete, it is characterized in that: in hole, beyond hole, underplate concrete will stay and establish constuction joint before building, be provided with the shaped steel of one long 4m at constuction joint position, vertically place on the edge of a wing, and add the sealing steel disc that twice round in centre, seal impervious setting up defences, the constuction joint of the concrete cross section of the concavo-convex zigzag fashion of twice is set in short transverse, extend infiltration path and improve shear stiffness.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804091A (en) * | 2016-04-18 | 2016-07-27 | 浙江耀厦控股集团有限公司 | Cooperative construction method of prestress combined profile steel support and earth excavation in deep foundation pit |
| CN110965586A (en) * | 2019-11-25 | 2020-04-07 | 中国十九冶集团有限公司 | Construction method of multi-layer basement structure of municipal road |
| CN113502824A (en) * | 2021-07-08 | 2021-10-15 | 中国建筑第八工程局有限公司 | Construction method for quickly unearthing annular road in deep foundation pit by combining trestle with construction method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114956A (en) * | 1996-10-09 | 1998-05-06 | Maeda Corp | Method of boiling countermeasure by groundwater |
| CN101775807A (en) * | 2010-03-03 | 2010-07-14 | 天津二十冶建设有限公司 | Structure for supporting deep foundation pit of soft soil foundation |
| CN101824825A (en) * | 2010-05-28 | 2010-09-08 | 天津三建建筑工程有限公司 | Deep foundation pit open cutting construction method |
| CN102425173A (en) * | 2011-12-07 | 2012-04-25 | 中冶天工集团有限公司 | Deep foundation pit earthwork digging method |
| JP2012162968A (en) * | 2011-02-09 | 2012-08-30 | Takenaka Komuten Co Ltd | Construction supporting structure |
| CN102691300A (en) * | 2012-04-18 | 2012-09-26 | 浙江省建工集团有限责任公司 | Construction method of foundation pit earthwork |
| CN102704488A (en) * | 2012-04-24 | 2012-10-03 | 王军 | Novel soft soil foundation pit excavation method |
| CN103195067A (en) * | 2013-03-29 | 2013-07-10 | 中国十七冶集团有限公司 | Deep foundation pit muddy-silty clay cushion layer construction method |
-
2014
- 2014-02-28 CN CN201410074356.XA patent/CN103821149A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10114956A (en) * | 1996-10-09 | 1998-05-06 | Maeda Corp | Method of boiling countermeasure by groundwater |
| CN101775807A (en) * | 2010-03-03 | 2010-07-14 | 天津二十冶建设有限公司 | Structure for supporting deep foundation pit of soft soil foundation |
| CN101824825A (en) * | 2010-05-28 | 2010-09-08 | 天津三建建筑工程有限公司 | Deep foundation pit open cutting construction method |
| JP2012162968A (en) * | 2011-02-09 | 2012-08-30 | Takenaka Komuten Co Ltd | Construction supporting structure |
| CN102425173A (en) * | 2011-12-07 | 2012-04-25 | 中冶天工集团有限公司 | Deep foundation pit earthwork digging method |
| CN102691300A (en) * | 2012-04-18 | 2012-09-26 | 浙江省建工集团有限责任公司 | Construction method of foundation pit earthwork |
| CN102704488A (en) * | 2012-04-24 | 2012-10-03 | 王军 | Novel soft soil foundation pit excavation method |
| CN103195067A (en) * | 2013-03-29 | 2013-07-10 | 中国十七冶集团有限公司 | Deep foundation pit muddy-silty clay cushion layer construction method |
Non-Patent Citations (1)
| Title |
|---|
| 张建平，黄应仲: ""挖深24.3m的基坑留坡挖土及坑中坑混凝土后浇综合应用技术"", 《建筑施工》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804091A (en) * | 2016-04-18 | 2016-07-27 | 浙江耀厦控股集团有限公司 | Cooperative construction method of prestress combined profile steel support and earth excavation in deep foundation pit |
| CN105804091B (en) * | 2016-04-18 | 2019-05-28 | 浙江耀厦控股集团有限公司 | Prestressing combination type steel support and earth excavation coordinative construction engineering method in deep basal pit |
| CN110965586A (en) * | 2019-11-25 | 2020-04-07 | 中国十九冶集团有限公司 | Construction method of multi-layer basement structure of municipal road |
| CN110965586B (en) * | 2019-11-25 | 2021-06-29 | 中国十九冶集团有限公司 | Construction method of multi-layer basement structure of municipal road |
| CN113502824A (en) * | 2021-07-08 | 2021-10-15 | 中国建筑第八工程局有限公司 | Construction method for quickly unearthing annular road in deep foundation pit by combining trestle with construction method |
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Application publication date: 20140528 |