CN109972624A - Subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction method - Google Patents
Subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction method Download PDFInfo
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- CN109972624A CN109972624A CN201910227484.6A CN201910227484A CN109972624A CN 109972624 A CN109972624 A CN 109972624A CN 201910227484 A CN201910227484 A CN 201910227484A CN 109972624 A CN109972624 A CN 109972624A
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- earthwork
- foundation pit
- campshed
- excavation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction methods, comprising the following steps: excavates the number of plies and every layer of cutting depth according to enclosure structure of foundation pit of subway station crown beam, support drawing absolute altitude and the design of actual place absolute altitude relativeness；It excavates route and step divides quinquepartite, the first step excavates the hat above earthwork of bottom elevation, second step excavates campshed and punches part cubic metre of earth, third step is punched at campshed under crown beam using rope saw, 4th step punches the earthwork within the scope of facade foundation pit, and the 5th step punches lower part cubic metre of earth within the scope of facade foundation pit；The present invention transports ramp by increasing portal and slag-soil truck newly at the following campshed of foundation pit crown beam, earth excavation is carried out using common excavating machinery, reduce the investment of large excavator tool, the speed of construction is accelerated simultaneously, it reduces the duration and then saves cost, and the excavation working efficiency of the earthwork will not be limited because of the super large span of foundation pit, guarantee the progress of duration, convenient for the budget of duration.
Description
Technical field
The present invention relates to a kind of subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction methods, belong to
Subway station open-cut field.
Background technique
Currently, urbanization is advanced by leaps and bounds, subway construction is such as emerged rapidly in large numbersBamboo shoots after a spring rain booming, subway work place periphery high building woods
Vertical, heavy traffic, environment is increasingly complicated, requires controls such as construction noise, vibrations further stringent；It is carried on construction work at night in city to making an uproar
Sound requires extremely harshness, a variety of large excavator tools, slag-soil truck is especially needed in earth excavation work progress, noise seriously surpasses
Mark, increases subway foundation pit earth excavation difficulty.In addition, ordinary excavator tool can not be just since part foundation pit span, depth are big
Earth excavation is often carried out, needs to excavate and to add in foundation pit many general using multiple large-sized long arm excavator tools above foundation pit
Logical excavating machinery carries out the earthwork inside foundation pit to lead digging, further increases the difficulty of construction, in this regard, current this campshed+
There is also following defects for inner support huge ultradeep foundation pit digging mode:
(1) large-sized long arm excavator tool fuel consumption is big, purchase and lease expenses are high, it is mechanical to need to increase multiple auxiliary, increases
Construction cost is added；
(2) the longer single excavated volume of large-sized long arm excavator tool arm is smaller, and the unit earth volume excavation used time is longer, and with
The intensification of foundation depth, effect gradually decrease, and not can guarantee duration progress, influence duration budget.It can be seen that in the prior art
Campshed+inner support huge ultradeep foundation pit earth excavation mode there are problems that construction cost is high and not can guarantee duration progress.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of subway station campshed and the inner support huge ultradeep foundation pit earthwork are fast
Fast excavation construction method, to solve current huge ultradeep foundation pit earth excavation mode there are construction cost height and can not protect
The problem of demonstrate,proving duration progress.
In order to solve the above-mentioned technical problem, present invention employs following technical solutions:
Subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction method, comprising the following steps:
Step 1, the drawing absolute altitude according to enclosure structure of foundation pit of subway station crown beam, support are opposite with actual place absolute altitude
The number of plies and every layer of cutting depth are excavated in relationship and geological condition, design；
Route and excavation step are excavated in step 2, design, excavate route and step divides quinquepartite, the first step excavates crown beam
The above first layer earthwork of bottom absolute altitude, second step excavation campshed punches in range and the earthwork of slope lane portion, third step row
Stake punches, and the 4th step punches the second layer earthwork within the scope of facade foundation pit, under the 5th step punches within the scope of facade foundation pit
Portion's third layer and the 4th layer of earthwork；
Step 3 excavates conventional excavating machinery and excavates the hat bottom elevation above section first layer earthwork, and the first layer earthwork is opened
It digs successively to be excavated from the campshed place of punching to its opposite direction, increases bearing diagonal newly in crown beam, first of support and the range that punches at this time
Synchronous construction；
Step 4 is completed when increasing bearing diagonal construction newly in crown beam, first of support and the range that punches, and excavates campshed and punch
In range and after the completion of the earth excavation and slope protection of slope lane portion spray anchor, punched the row in range using rope saw cut
, earth excavation and slope protection spray anchor are alternately constructed within the scope of slope lane；
Step 5 excavates first of support and lower part second branch using conventional excavating machinery after the completion of campshed punches
The second layer earthwork between support, slag-soil truck haul volume outside slope lane, during excavation of earthwork, according to working face range
Expansion is stepped up excavating machinery quantity and is excavated, and second layer earth excavation replaces construction with spraying anchor between piles at this time；
Step 6, after the completion of second layer earth excavation, the third layer earthwork, the 4th layer of earthwork that successively slope carries out lower part are opened
Dig, the third layer earthwork and the 4th layer of earth excavation alternately, the third layer earthwork at this time, the 4th layer of earthwork, spraying anchor between piles and the
Two support erection to replace with third road performs.
Further, in the step 1, same court absolute altitude is surveyed, the difference with hat bottom elevation is the first layer earthwork
Cutting depth, the second layer, third layer earth excavation height between adjacent supports bottom distance, the 4th layer of earth excavation depth be
Third road supports distance of the bottom away from foundation pit bottom.
Further, in the third step of the step 2, campshed is carried out using crane, rope saw and hand fit and is punched.
Further, in the step 5, when second layer earth excavation, digging, slag-soil truck are drawn into foundation pit with excavating machinery
The haul volume outside slope lane.
Further, the step 6 punches most specifically, after the completion of second layer earth excavation from foundation pit with respect to campshed
Inside carries out third layer earth excavation, and slag-soil truck is in the haul volume outside slope lane, earth excavation, support erection, spraying anchor between piles
Intersection is constructed；Loop wheel machine, excavating machinery and hand fit's location and installation during support is set up；When foundation pit most inner side third layer
Earth excavation to when meeting excavating machinery operating space, being put into the excavation that excavating machinery carries out the 4th layer of earthwork thereunder；The
Four layers of earthwork are imported in third layer by excavating machinery, are packed into slag-soil truck by the excavating machinery of the excavation third layer earthwork and are transported outward,
Loop wheel machine, excavating machinery and hand fit's location and installation during support is set up, circuit sequentially；The third layer earthwork at this time and the 4th layer
Earth excavation is alternately；The third layer earthwork and the 4th layer of earthwork, support erection alternately to perform at spraying anchor between piles.
Further, each road support is bracing members.
Compared with the existing technology, the present invention has the following technical effect that
The present invention transports ramp by increasing portal and slag-soil truck newly at the following campshed of foundation pit crown beam, using conventional digging
Pick is mechanical to carry out earth excavation, reduces the investment of large excavator tool, while accelerating the speed of construction, reduces the duration in turn
Save artificial, machine cost, and the excavation working efficiency of the earthwork will not be limited because of the super large span of foundation pit, guarantee the duration into
Degree, convenient for the budget of duration.
Detailed description of the invention
Fig. 1 is the plan view of the embodiment of the present invention；
Fig. 2 is the sectional view of the embodiment of the present invention.
Specific embodiment
Present invention is further described in detail by 1-2 with reference to the accompanying drawing, but not as a limitation of the invention.
Referring to Fig.1, Fig. 2, subway station campshed of the invention and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction party
Method includes the following steps:
Step 1, the drawing absolute altitude according to enclosure structure of foundation pit of subway station crown beam, support are opposite with actual place absolute altitude
The number of plies and every layer of cutting depth are excavated in relationship and geological condition, design；Same court absolute altitude is surveyed, the difference with hat bottom elevation
For 10 cutting depth of the first layer earthwork, the height that the second layer earthwork 12, the third layer earthwork 13 are excavated is adjacent supports bottom spacing
From the 4th layer of 14 cutting depth of the earthwork is 50 distance of the bottom away from foundation pit bottom of third road bracing members.
Route and excavation step are excavated in step 2, design, excavate route and step divides quinquepartite: the first step, excavate hat
The above first layer earthwork 10 of bottom elevation；Second step, excavation campshed punches in coverage and the earthwork of slope lane portion
11；Third step, crane, rope saw and hand fit carry out campshed and punch 30；4th step, punch in excavation pit facade foundation pit range
The interior second layer earthwork 12；5th step, the lower third layer earthwork 13 and the 4th layer of earthwork 14 within the scope of the facade foundation pit that punches.
Step 3 excavates the hat bottom elevation above section first layer earthwork 10 using excavating machinery 60, wherein comprising punching
The earthwork of bottom elevation or more is preced at slope；Earth excavation be punch from campshed successively excavated to its opposite direction from 30, outer muck haulage
Side, according in digging process in crown beam, first of bracing members 20 and the range that punches increase newly 80 face condition of bearing diagonal, timed delivery
Fork construction.
Step 4, when the construction of bearing diagonal 80 completion newly-increased in crown beam, first of bracing members 20 and the range that punches and concrete
After intensity reaches design requirement, carries out the earthwork 11 in coverage that punches of campshed in slope ramp and foundation pit and excavate；Earth excavation,
Spraying anchor between piles and slope protection spray anchor 40 are alternately constructed, and the materials such as anchor cement to be painted, which reach, to carry out campshed after intensity requirement and punch cutting,
Campshed punches 30 using loop wheel machine, rope saw, the artificial construction that cooperates.
Step 5 excavates first of bracing members 20 and the using conventional excavating machinery 60 when campshed punches after the completion of 30
The second layer earthwork 12 between two bracing members 50；When the second layer earthwork 12 is excavated, digging, slag are drawn into foundation pit with excavating machinery 60
The haul volume outside slope lane of navy barrow 70；During excavation of earthwork, excavator is stepped up according to the expansion of working face range
60 quantity of tool is excavated, and increases the outer haul volume of slag-soil truck 70, improves working efficiency, at this time earth excavation and spraying anchor between piles 40
Alternately construct.
Step 6 after the completion of second layer earth excavation, carries out third layer soil from foundation pit with respect to punch 30 most inner side of campshed
Side is excavated, and slag-soil truck 70 is in the haul volume outside slope lane, earth excavation, second and the erection of third bracing members 50, spraying anchor between piles
40 intersections are constructed；Second and 50 erection process of third bracing members in loop wheel machine, excavating machinery 60 and hand fit's location and installation.
When the foundation pit most inner side third layer earthwork 13, which is excavated to, meets 60 operating space of excavating machinery, it is put into excavating machinery 60 thereunder
Carry out the excavation of the 4th layer of earthwork 14；The 4th layer of earthwork 14 is imported in third layer by excavating machinery 60, by the excavation third layer earthwork
13 excavating machinery is packed into slag-soil truck 70 and is transported outward, loop wheel machine, excavating machinery 60 and hand fit in 50 erection process of bracing members
Location and installation circuits sequentially.The third layer earthwork at this time 13 and the 4th layer of earthwork 14 are excavated alternately, earth excavation 13,14, stake
Between spray anchor 40, bracing members set up 50 alternately perform.
The present invention increases diagonal brace by increasing newly in the following campshed of foundation pit crown beam, ensure that the stabilization of foundation pit, increases newly at portal
Portal effectively ensures that earth excavation efficiently promotes, while having excavating machinery cooperation in overlength bracing members erection process, improves
Installation effectiveness effectively prevents casualties risk, improves support and sets up safety coefficient.
The present invention transports ramp by increasing portal and slag-soil truck newly at the following campshed of foundation pit crown beam, using conventional digging
Pick is mechanical to carry out earth excavation, reduces the investment of large excavator tool, while accelerating the speed of construction, reduces the duration in turn
Save artificial, machine cost, and the excavation working efficiency of the earthwork will not be limited because of the super large span of foundation pit, guarantee the duration into
Degree, convenient for the budget of duration.
Above-described embodiment, which is intended merely to become apparent from, illustrates that technical solution of the present invention made enumerates, not to of the invention
It limits, those skilled in the art are according to the common knowledge of this field to the accommodation of technical scheme also in this Shen
Please be within protection scope, in short, above-described embodiment is only to enumerate, the protection scope of the application is with scope
It is quasi-.
Claims (6)
1. subway station campshed and inner support huge ultradeep foundation pit earthwork Rapid Excavation construction method, which is characterized in that including following
Step:
Step 1, according to enclosure structure of foundation pit of subway station crown beam, the drawing absolute altitude of support and actual place absolute altitude relativeness
And the number of plies and every layer of cutting depth are excavated in geological condition, design；
Route and excavation step are excavated in step 2, design, excavate route and step divides quinquepartite, the first step excavates crown beam bottom mark
The high above first layer earthwork, second step excavation campshed punches in range and the earthwork of slope lane portion, third step campshed open
Hole, the 4th step punch the second layer earthwork within the scope of facade foundation pit, and the 5th step punches lower part within the scope of facade foundation pit
Three layers and the 4th layer of earthwork；
Step 3 excavates conventional excavating machinery and excavates the hat bottom elevation above section first layer earthwork, and first layer earth excavation is
It is successively excavated from the campshed place of punching to its opposite direction, it is synchronous to increase bearing diagonal newly in crown beam, first of support and the range that punches at this time
Construction；
Step 4 is completed when increasing bearing diagonal construction newly in crown beam, first of support and the range that punches, and excavates campshed and punch range
After the completion of interior and slope lane portion earth excavation and slope protection spray anchor, is punched the campshed in range, put using rope saw cut
Earth excavation and slope protection spray anchor are alternately constructed within the scope of the lane of slope；
Step 5 excavates first of support using conventional excavating machinery and supports it with lower part second after the completion of campshed punches
Between the second layer earthwork, slag-soil truck haul volume outside slope lane, during excavation of earthwork, according to the expansion of working face range
It is stepped up excavating machinery quantity to be excavated, second layer earth excavation replaces construction with spraying anchor between piles at this time；
Step 6, after the completion of second layer earth excavation, successively slope carries out the third layer earthwork of lower part, the 4th layer of earth excavation,
The third layer earthwork and the 4th layer of earth excavation alternately, the third layer earthwork at this time, the 4th layer of earthwork, spraying anchor between piles and second with
The support of third road, which is set up, alternately to be performed.
2. according to the method described in claim 1, it is characterized by: same court absolute altitude is surveyed, with crown beam in the step 1
The difference of bottom absolute altitude be first layer earth excavation depth, the second layer, third layer earth excavation height between adjacent supports bottom
Distance, the 4th layer of earth excavation depth are that third road supports distance of the bottom away from foundation pit bottom.
3. according to the method described in claim 1, it is characterized by: in the third step of the step 2, using crane, rope saw and
Hand fit carries out campshed and punches.
4. according to the method described in claim 1, it is characterized by: in the step 5, when second layer earth excavation, with excavation
Machinery draws digging, slag-soil truck haul volume outside slope lane into foundation pit.
5. according to the method described in claim 1, it is characterized by: the step 6 is specifically, second layer earth excavation is completed
Afterwards, third layer earth excavation is carried out from foundation pit with respect to the most inner side that campshed punches, slag-soil truck is in the haul volume outside slope lane, soil
Side is excavated, support is set up, spraying anchor between piles intersection is constructed；Loop wheel machine, excavating machinery and hand fit are fixed during support is set up
Position installation；When foundation pit most inner side third layer earth excavation is to when meeting excavating machinery operating space, it is put into excavator thereunder
Tool carries out the excavation of the 4th layer of earthwork；The 4th layer of earthwork is imported in third layer by excavating machinery, by the digging of the excavation third layer earthwork
The mechanical slag-soil truck that is packed into of pick is transported outward, and loop wheel machine, excavating machinery and hand fit's location and installation during support is set up successively are followed
Ring；The third layer earthwork at this time and the 4th layer of earth excavation are alternately；The third layer earthwork and the 4th layer of earthwork, spraying anchor between piles, branch
Support, which is set, alternately to be performed.
6. method according to any one of claims 1-5, it is characterised in that: each road support is bracing members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227484.6A CN109972624B (en) | 2019-03-25 | 2019-03-25 | Subway station row pile and inner support super-large and super-deep foundation pit earthwork rapid excavation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227484.6A CN109972624B (en) | 2019-03-25 | 2019-03-25 | Subway station row pile and inner support super-large and super-deep foundation pit earthwork rapid excavation construction method |
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| Publication Number | Publication Date |
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| CN109972624A true CN109972624A (en) | 2019-07-05 |
| CN109972624B CN109972624B (en) | 2021-04-30 |
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| CN201910227484.6A Active CN109972624B (en) | 2019-03-25 | 2019-03-25 | Subway station row pile and inner support super-large and super-deep foundation pit earthwork rapid excavation construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125944A (en) * | 2022-07-18 | 2022-09-30 | 中建八局第三建设有限公司 | Deep foundation pit trenchless gate-type pile cutting and hole entering method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193626A (en) * | 1981-05-23 | 1982-11-29 | Takenaka Komuten Co Ltd | Excavation work for underground |
| CN101067300A (en) * | 2007-06-01 | 2007-11-07 | 天津一建建筑工程有限公司 | Deep foundation pits rampway structure |
| CN203716156U (en) * | 2014-02-28 | 2014-07-16 | 中国建筑第四工程局有限公司 | Pit-in-pit city gate hole type excavation construction structure in deep foundation pit |
-
2019
- 2019-03-25 CN CN201910227484.6A patent/CN109972624B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57193626A (en) * | 1981-05-23 | 1982-11-29 | Takenaka Komuten Co Ltd | Excavation work for underground |
| CN101067300A (en) * | 2007-06-01 | 2007-11-07 | 天津一建建筑工程有限公司 | Deep foundation pits rampway structure |
| CN203716156U (en) * | 2014-02-28 | 2014-07-16 | 中国建筑第四工程局有限公司 | Pit-in-pit city gate hole type excavation construction structure in deep foundation pit |
Non-Patent Citations (1)
| Title |
|---|
| 蒋志成 等: "坑中坑开门式出土技术的研究及应用", 《城市建筑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125944A (en) * | 2022-07-18 | 2022-09-30 | 中建八局第三建设有限公司 | Deep foundation pit trenchless gate-type pile cutting and hole entering method |
| CN115125944B (en) * | 2022-07-18 | 2024-03-19 | 中建八局第三建设有限公司 | Deep foundation pit trenchless gate-type pile cutting and hole entering method |
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| Publication number | Publication date |
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| CN109972624B (en) | 2021-04-30 |
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