CN1958966A - Underground consecutive sinking well type openweb wall body, and construction method - Google Patents
Underground consecutive sinking well type openweb wall body, and construction method Download PDFInfo
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- CN1958966A CN1958966A CN 200610045573 CN200610045573A CN1958966A CN 1958966 A CN1958966 A CN 1958966A CN 200610045573 CN200610045573 CN 200610045573 CN 200610045573 A CN200610045573 A CN 200610045573A CN 1958966 A CN1958966 A CN 1958966A
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Abstract
The present invention discloses a kind of underground continuous sunk well type open-web wall body and its construction method. Said open-web wall body is an underground continuous closed wall body formed from several mutually-connected open-web wall sections. The open-web wall structure adopted by said invention can raise bending rigidity and can greatly raise construction speed. Besides, said invention also provides the concrete steps of its construction method.
Description
Technical field
The present invention relates to a kind of underground structrue engineering exterior wall and supporting wall-retaining structure, especially a kind of underground continuous empty stomach wall sinking type design and construction technology thereof.
Background technology
The form of structure of highrise building pattern foundation pit supporting structure can be divided into two big classes at present: the one, and temporary support structures; The 2nd, the diaphragm wall of pile wall interaction.The former is the outside at permanent underground structure, implement temporary supporting, treat main structure construction finish after (being after basement goes out ground at least), must be between temporary supporting structure and outer wall of basement backfill (will satisfy certain compactness requires), the reliable delivery of horizontal force when requiring with earthquake with the buried depth that satisfies the highrise building high building.At this moment, the effect of temporary support structures will stop fully, and will stay nonvolatil discarded object in the agent structure neighboring, these discarded objects also can exceed construction project land used red line sometimes, bring nonvolatil sequelae to society, even cause the contradiction dispute between the adjacent architectural project developer also to happen occasionally thus.The type selecting of this class temporary supporting structure, to back determine relatively that with the physico-mechanical properties of hydrogeological situation and relevant place soil and Information integrations such as the buried depth analysis of building basement temporary supporting structure commonly used has following several types: (1) steel concrete campshed according to the project site engineering; (2) soil bolt adds the steel concrete campshed; (3) support in and add the steel concrete campshed; (4) contrary sequence method steel concrete arch wall; (5) support in and add steel sheet pile; (6) cement soil wall; (7) SMW worker's method (in cement soil wall, placing shaped steel); (8) soil nailing wall; (9) put slope (be only applicable to safe class be three grades foundation ditch).
The second class pattern foundation pit supporting structure is the steel concrete diaphragm wall, and it adopts special plant equipment grooving, and mud off is put into reinforced mesh, and tremie concrete forms underground continuous reinforced concrete wall.When pit earthwork excavation and the construction of basement internal construction, it uses as interim pattern foundation pit supporting structure, block the water and soil pressure in the foundation ditch outside, and after basement construction went out ground, it is the permanent exterior wall of basement again.Therefore, be equivalent to, if, also can shorten total duration of engineering in conjunction with " contrary sequence method " construction the supporting and protection structure of deep foundation ditch and the two structure that integrates of outer wall of basement.Under certain condition, diaphragm wall can reduce project total cost significantly, the reduction of erection time, obtains favorable economic benefit.
Yet traditional construction of continuous concrete wall also has certain limitation and shortcoming, as: (1) contains very high sandy gravel stratum of artesian head or very soft clay (when especially groundwater table is very high) for karst area, still is difficult to adopt; (2) the construction of diaphragm wall scene is relatively moister and muddy, and its discarded slurry can bring environment pollution; (3) occur easily irregular backbreak and cell wall cave in; (4) need special construction equipment and construction team with certain professional standards; (5) metope of diaphragm wall is more coarse usually, even the mud phenomenon can occur pressing from both sides, usually needs to do one inwall again and comes waterproof, thereby increase duration and cost.
Now, when underground engineering foundation ditch adopts the fender post supporting, at first be that a corral fender pile is set in the basement periphery.The spacing of pile foundation is by the quality decision of soil property, and the fender post spacing can be more greatly when soil property was good, and when soil property was relatively poor, the fender post spacing was little, and stake is several then will to be increased relatively, pours in to foundation ditch inside to prevent the peripheral earth of foundation ditch.When the darker or underground number of plies of foundation ditch is more, need on fender post, be provided with toward contact and to draw anchor or interior support, be used for reinforcing fender post, after fender post is reinforced, could in the scope that fender post is drawn a circle to approve, carry out the construction of underground aspect.Several roads will be set altogether draw anchor or interior support, this all will determine by calculating, even will carry out multivariant Technological Economy relatively.
When carrying out the fender post construction, utilize the method for manually digging hole often, progressively be that unit down excavates with the certain depth.And be that unit makes the steel concrete retaining wall with the certain depth, a peripheral water and soil pressure of retaining.After carrying out foundation pit supporting pile, often must do water-stop curtain, just begin the excavation of soil in the foundation ditch, and build basement.After having built basement, the effect of fender post just is through with, and for good and all is retained in undergroundly, forms underground obstacle.
In the underground engineering construction process, also adopt cantilevered concrete pile space enclosing structure sometimes.But because cantilevered space enclosing structure stress performance is relatively poor, the engineering accident incidence is higher, is only applicable to the better and more shallow underground construction of foundation ditch of soil property.And band draws the space enclosing structure of anchor or interior support, and construction is trouble, and supporting and protection structure expense costliness draws anchor to exceed the land used red line toward the contact meeting, and the dismounting of supporting in the steel concrete, danger is bigger, time-consuming effort again.In a word, do space enclosing structure earlier, carry out the construction of basement again, can cause manpower financial capacity and temporal waste in the basement outside.
Summary of the invention
Shortcoming and defect for the shortcoming and defect that overcomes existing underground construction space enclosing structure and the construction of existing underground construction space enclosing structure, the invention provides a kind of underground continuous empty stomach wall sinking type design and job practices thereof, the exterior wall of underground construction foundation pit enclosure structure and underground construction agent structure is united two into one, save the land used space, save construction costs, reduction of erection time, and the construction that increases the anti-sidesway ability of outer wall of basement and bending rigidity greatly and be more convenient for basement inside.
The technical solution adopted for the present invention to solve the technical problems is: a kind of underground consecutive sinking well type is body of wall on an empty stomach, be to interconnect the continuous closed body of wall that is constituted by some empty stomach wall sections, described empty stomach wall section is the horizontal cancelled structure that is surrounded by two vertical walls and end walls; Its inside is provided with some cross binding; Wall bottom in empty stomach wall section is provided with the sword pin.
A kind of underground consecutive sinking well type is the job practices of wall on an empty stomach, comprising:
(1) prefabricated some steel concrete empty stomach wall sections;
(2) manually in empty stomach wall section, cut the earth to sink to putting in place and back cover;
(3) two connect with the reservation connecting hole of reinforcing bar by end wall between the wall sections on an empty stomach, and make reinforcing cage in the wall section adjacent end portion certain space scopes on an empty stomach and the formwork casting reinforced concrete forms secretly (end) post two;
(4) construct successively, up to the underground continuous empty stomach body of wall that forms sealing.
The invention has the beneficial effects as follows that (1) does not need special plant equipment, not high to constructor's technical level requirement yet; (2) the anti-sidesway and the bending rigidity of wall are bigger on an empty stomach, can increase jib-length greatly, reduce the workload of drawing anchor or interior support, therefore both can adopt " contrary sequence method " construction, also can adopt positive practice construction; (3) work plane is big, can carry out large formation warfare as hand excavated pile, and speed of application is fast, and the duration is short; (4) do not need temporary support structures, the exterior wall of underground construction space enclosing structure and underground construction agent structure unites two into one, and can save project total cost greatly, is particularly useful for the design and construction of multi-storey basement; (5) can make full use of soil in the construction project red line, the basement area be done greatly done, and do not stay permanent discarded object, surrounding enviroment are had no adverse effects; (6) the work progress safety is higher, and workmanship has reliable assurance.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an empty stomach wall segment structure schematic diagram of the present invention.
Fig. 2 is another structural representation of empty stomach wall section of the present invention.
Fig. 3 is the syndeton schematic diagram of empty stomach wall section of the present invention.
Fig. 4 is the present invention's layout plan of the underground continuous empty stomach wall of wall section on an empty stomach.
Fig. 5 is a basement interior construction structural representation of the present invention.
The specific embodiment
In work progress, if outer wall of basement is according to calculating, need to adopt the thick body of wall of 400mm, then it is divided into two, thick each 200mm of two vertical walls, the chamber is wide about 1 meter on an empty stomach in middle formation, is convenient to people's shoveling operation inside, both ends wall thickness and internal partition wall wall thickness determine that by calculating the arrangement of reinforcement of all bodies of wall is also determined by calculating.This empty stomach body of wall can be thicker than 400mm solid wall stressed better, have stronger anti-sidesway and bending resistance.
As shown in Figure 1, wall section 10 is the horizontal cancelled structures that surrounded by two vertical walls 14,15, end walls 16,17 and the inner some cross binding 18,19 that are provided with on an empty stomach; Be provided with sword pin 20 in empty stomach wall bottom, sword pin 20 is a blunt bed plate bevel structure (referring to Fig. 5).Cross binding 18,19 is divided into 3 cavitys 11,12,13 to empty stomach wall section 10 equably.Cross binding 18,19 can be that concrete wall also can be concrete beam, and their end does not flush with the end of empty stomach wall section 10.On the end walls 16,17 of empty stomach wall section 10, be provided with connecting hole 24.
As Fig. 2 is empty stomach wall section 10 another embodiment, and its basic structure is identical with Fig. 1, and different is to leave soil box 28 in the bottom of end walls 16,17.
The correction convenient and when being easy to of being unearthed during for artificial the shoveling, suggestion press the floor layering and is made the empty stomach wall, as multi-storey basement, can repeatedly make and sink.The empty stomach wall section that layering is made is as same little open caisson.When empty stomach wall section 10 is divided into four layers, as shown in Figure 1, be respectively layer 21,31,41,51, sword pin 20 is made the planar base surface of constant slope as required.During construction, layer 51 is made earlier and the sinking of cutting the earth in empty stomach cavity 11,12,13; When 51 layers sink to ground after, vertical protruding bar by vertical wall 14,15 and end walls 16,17 is connected with the upper strata and making layer 41, in empty stomach cavity 11,12,13, cut the earth once more, when 41 layers sink to ground after, with identical method connecting layer 31,21, sink to ground, realize till sinking type design and the construction again up to whole empty stomach wall section.
After the wall section sinks to putting in place on an empty stomach, adopt the steel concrete back cover, then each empty stomach wall section be coupled together.As shown in Figure 3, the end walls 16,17 of wall section is equipped with some reservation connecting holes 24 on an empty stomach.Adjacent two empty stomach wall sections couple together by connecting hole 24 usefulness reinforcing bars.During construction, can choose three sections adjacent empty stomach wall sections 10 wantonly, earlier left and right section empty stomach wall section manually be cut the earth to sink to putting in place and back cover, the interlude of constructing again is the wall section on an empty stomach, and artificial shoveling sinks to putting in place and back cover.In the sinking process,, also to dig up the soil in the end slot 25,26 between the wall section on an empty stomach except the soil in the empty stomach wall intersegmental part abdomen groove will be dug up.In the sinking, left and right section empty stomach wall section adopts empty stomach wall section shown in Figure 1, and the soil around can preventing pours on an empty stomach within the walls; Interlude is wall employing empty stomach wall section as shown in Figure 2 on an empty stomach, conveniently to cut out the soil between the wall section on an empty stomach.When the groove between the empty stomach wall section 25,26 was cut the earth, because the gap of reserving between section and section 100mm only, the soil in the outside, gap can form the nature arch, makes the soil body can not pour in the end slot of empty stomach wall.Just in case run into bury, can not form the time spent of doing of arch, can be on ground or undergroundly insert gap retaining soil with precast concrete plank, also can adopt the way of localized ejection pea gravel concreten to stop entering of water and soil outside the gap.Like this, when centre empty stomach wall section sinks to putting in place, its both sides 25,26 interior soil of the groove between the wall section have on an empty stomach also been dug, we can be in this groove with the cavity that is connected in place the reinforcing cage of solid post, and vertically be connected with the empty stomach wall section of sinking in advance with reinforcing bar along body of wall, the formwork fluid concrete forms solid post 45 again, as the newel post that supports underground agent structure floor beam and grade beam.Like this, just be connected with each other between the wall section on an empty stomach, after the same method, each section is connected to form a kind of underground continuous empty stomach body of wall of sealing one by one.Before the concrete of cast post 45, also will be pre-buried good perpendicular to the reinforcing bar of wall direction, and stretch out outside the wall, be rigidly connected so that form with basement interior wall or built in beam in the future.These solid post are equivalent to the sleeper of diaphragm wall, and they play the effect of two aspects: the one, discrete empty stomach wall section is connected into the very big underground continuous empty stomach wall of rigidity; The 2nd, can be used as the newel post of basement internal construction.
As shown in Figure 4, be empty stomach wall plane arrangement diagram, it can be arbitrarily that empty stomach wall section 10 is chosen, and also can select several diverse locations to begin sinking wall section 10 on an empty stomach simultaneously, and then surround gradually, forms the closed body of wall of definite shape.
As shown in Figure 5, be the inner positive practice work progress schematic diagram of two-layer basement.Construction has two kinds of methods, a kind of is an interim interior staying, cuts the earth earlier to bearing one deck flooring absolute altitude, and at this moment underground continuous empty stomach wall is to be in cantilever position (because the wall bending rigidity is big on an empty stomach, have enough bearing capacities), on this absolute altitude, do and support (or drawing anchor) in the steel concrete.And then cut the earth downwards, absolute altitude to base plate is done the cushion cap and the grade beam of pile foundation earlier, does the base plate of basement again.By the time after negative two layers of interior wall, post and negative one deck beam (plate) form, can remove interior support, continue the negative one deck interior wall of construction, post and ± 0.00 absolute altitude place beam (plate), to finish the construction of basement agent structure.Another kind is to adopt method of center island, cut the earth earlier to negative one deck flooring absolute altitude, at this moment diaphragm wall also is to be in cantilever position, around underground continuous empty stomach wall, put the slope shoveling then, the soil of foundation ditch middle part is once dug on earth, and cushion cap, grade beam and the base plate of construction middle part, construct then frame column and floor beam, and beam to around extend, to form the interior support of underground continuous empty stomach wall, dig up at last the wall side again and put the soil on slope, and the cushion cap of middle part, grade beam and base plate are extended to peripheral diaphragm wall, so that finish the construction of agent structure.What Fig. 4 and Fig. 5 were represented is second method, and 32,33,34,35 for putting the zone, slope among Fig. 4, and 36 is central island regions.
Present embodiment adopts second method, as shown in Figure 5, and after underground continuous empty stomach wall connects sealing, carry out first time machinery earlier and cut the earth, i.e. 40 parts among Fig. 5 are if soil property is relatively poor, the empty stomach that needs reinforcement wall then when machinery is cut the earth 43 absolute altitude places, intermediate layer, can adopt short bolt anchorage.Machinery is cut the earth to putting the slope among Fig. 4 with top and central island 36 parts for the second time, excavates downwards obliquely to form to put slope district 32,33,34,35.After the shoveling of middle position puts in place, just construct cushion cap, grade beam and the base plate of middle part, construct then frame column and floor beam are in this process, sometimes to adopt the way of manually digging hole to pour into a mould the frame column of putting sloping position, so that form the support system of Vierendeel girder.And Vierendeel girder to around extend, to form the interior support of underground continuous empty stomach wall, manually dig up at last empty stomach wall side again and put the soil on slope, and the cushion cap at central island position, grade beam and base plate are extended to the underground continuous empty stomach wall of periphery, so that finish the construction of agent structure.
No matter be interim in staying or method of center island, most foundation pit earth all is to adopt mechanical equivalent of light excavation, so speed of application is all than comparatively fast.
No matter be the engineering piles under the base plate or the supporting pile of underground continuous empty stomach wall, all to before underground continuous empty stomach wall is implemented, construct and finish.If engineering piles adopts the hand excavated pile in the foundation ditch bottom surface, that will take to support in the multiple tracks to the underground continuous empty stomach wall of sinking type, just can guarantee its safety.
After basement structure construction was intact, the abdominal cavity of underground continuous empty stomach wall also can be used to lay horizontal plants pipeline, not backfill; But the also closely knit sand of backfill further strengthens the bending resistance of body of wall.If not backfill not only for the external wall quality problems that occur during basement uses in the future, as the cracking infiltration, can be repaired processing in the empty stomach groove, very convenient, and be convenient to the regular maintenance of equipment pipe in the exterior wall abdominal cavity.This also is one of advantage of underground continuous empty stomach wall.
Adopt design and construction technology of the present invention, saved underground construction space enclosing structure expense, directly utilize outer wall of basement to prop up the dash soil pressure, utilize the space in the building line maximizing, and peripheral place and engineering services are not produced any influence.Utilize horizontal cancelled structure, increased the bending rigidity of exterior wall, support in reducing, pile wall interaction reduces construction costs and duration greatly, has good market prospects.
The above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (10)
1, a kind of underground consecutive sinking well type empty stomach body of wall is characterized in that: be to interconnect the underground continuous sealing body of wall that is constituted by some empty stomach wall sections; The wall section is the cancelled structure that is surrounded by two vertical walls and end walls on an empty stomach, and wall is intersegmental on an empty stomach connects by steel concrete.
2, a kind of underground consecutive sinking well type empty stomach body of wall according to claim 1, it is characterized in that: also be provided with some bracing structures in the described empty stomach wall section, bracing structure is connected the cavity that also empty stomach chamber equal portions is become two or more with two vertical walls.
3, a kind of underground consecutive sinking well type empty stomach body of wall according to claim 1, it is characterized in that: the wall bottom of described empty stomach wall section is provided with the sword pin.
4, a kind of underground consecutive sinking well type empty stomach body of wall according to claim 1, it is characterized in that: the end wall of described empty stomach wall section is provided with the reservation connecting hole.
5, a kind of underground consecutive sinking well type empty stomach body of wall according to claim 1, it is characterized in that: described empty stomach wall section can be divided into several layers.
6, a kind of underground consecutive sinking well type empty stomach body of wall according to claim 1 is characterized in that: be provided with level and vertical reinforcing bar in the wall of described empty stomach wall section.
7, according to claim 1 or 3 described a kind of underground consecutive sinking well types empty stomach bodies of wall, it is characterized in that: the sword pin of described empty stomach wall section bottom is blunt bed plate bevel structure.
8, a kind of job practices of underground consecutive sinking well type empty stomach wall comprises:
(1) makes some concrete wall section on an empty stomach, comprise wall and sword pin on an empty stomach; Wall is the cancelled structure that is surrounded by two vertical walls and end walls on an empty stomach; Be provided with some cross binding in the wall section on an empty stomach;
(2) back cover after manually shoveling sinks to putting in place in empty stomach wall section;
(3) two connect by the reservation connecting hole on the end wall with reinforcing bar between the wall sections on an empty stomach, and make reinforcing cage and touch casting reinforced concrete and form secretly (end) post;
(4) construct successively, up to the underground continuous empty stomach body of wall that forms sealing.
9, the job practices of a kind of underground consecutive sinking well type empty stomach wall as claimed in claim 8, it is characterized in that: described empty stomach wall section can be made in layering, and gradation is sunk; Also can integral manufacturing, once sinking.
10, as claim 8 and 9 described a kind of underground consecutive sinking well types empty stomach wall construction methods, it is characterized in that described open caisson method comprises: (a) the wall section is divided into several layers on an empty stomach; (b) begin to make and cut the earth from the bottom, up to sinking to ground; (c) on the empty stomach wall that has sunk, overlap making the last layer wall and the sinking of cutting the earth on an empty stomach; (d) each layer of constructing successively sinks to preposition up to empty stomach wall section.
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| CN 200610045573 CN1958966A (en) | 2006-07-20 | 2006-07-20 | Underground consecutive sinking well type openweb wall body, and construction method |
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| CN101942841A (en) * | 2010-10-14 | 2011-01-12 | 中国长江三峡集团公司 | Method for constructing reversed beam type raft plate foundation |
| CN101818496B (en) * | 2009-02-25 | 2011-07-20 | 中煤第三建设（集团）有限责任公司 | Inversely-constructed underground continuous wall with siamesed reinforcing cage |
| CN102168429A (en) * | 2011-04-08 | 2011-08-31 | 广州市建筑集团有限公司 | Thin-wall soil retaining brick die |
| CN102383440A (en) * | 2011-09-08 | 2012-03-21 | 中建六局第三建筑工程有限公司 | Preset type tower crane deep foundation construction method and structure |
| CN102561342A (en) * | 2012-02-10 | 2012-07-11 | 中国水利水电第五工程局有限公司 | Multifunctional composite mould pipe for construction of underground diaphragm wall |
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| CN106168033A (en) * | 2016-08-09 | 2016-11-30 | 岩土科技股份有限公司 | A kind of vertical mud and water balance constructing device |
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| CN101942841A (en) * | 2010-10-14 | 2011-01-12 | 中国长江三峡集团公司 | Method for constructing reversed beam type raft plate foundation |
| CN102168429A (en) * | 2011-04-08 | 2011-08-31 | 广州市建筑集团有限公司 | Thin-wall soil retaining brick die |
| CN102168429B (en) * | 2011-04-08 | 2013-06-19 | 广州市建筑集团有限公司 | Thin-wall soil retaining brick die |
| CN102383440A (en) * | 2011-09-08 | 2012-03-21 | 中建六局第三建筑工程有限公司 | Preset type tower crane deep foundation construction method and structure |
| CN102561342A (en) * | 2012-02-10 | 2012-07-11 | 中国水利水电第五工程局有限公司 | Multifunctional composite mould pipe for construction of underground diaphragm wall |
| CN103898900B (en) * | 2014-03-25 | 2016-01-06 | 东南大学 | Band pull bar steel tube-concrete composite structure diaphragm wall and construction method thereof |
| CN103898900A (en) * | 2014-03-25 | 2014-07-02 | 东南大学 | Concrete-filled steel tube composite structure underground diaphragm wall with pull rods and construction method of underground diaphragm wall |
| CN103924581A (en) * | 2014-03-25 | 2014-07-16 | 东南大学 | Underground continuous wall with prefabricated concrete-filled steel tube composite structure and method for constructing underground continuous wall |
| CN105003101B (en) * | 2014-07-12 | 2018-08-24 | 台州长天能源技术有限公司 | The damp proof structures dehumanization method equipment structures in underground |
| CN105003101A (en) * | 2014-07-12 | 2015-10-28 | 施国樑 | Dehumidifying method of underground moisture-proof structure, equipment, and underground moisture-proof structure |
| CN105239577A (en) * | 2015-09-09 | 2016-01-13 | 冯克俊 | Method for carrying out settlement of underground wall structure by means of high-pressure water guns |
| CN106168033A (en) * | 2016-08-09 | 2016-11-30 | 岩土科技股份有限公司 | A kind of vertical mud and water balance constructing device |
| CN106245653A (en) * | 2016-08-09 | 2016-12-21 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN106245653B (en) * | 2016-08-09 | 2018-03-09 | 岩土科技股份有限公司 | A kind of vertical mud and water balance construction method |
| CN106978815A (en) * | 2016-12-15 | 2017-07-25 | 岩土科技股份有限公司 | A kind of open caisson construction device and construction method |
| CN111305225A (en) * | 2020-03-09 | 2020-06-19 | 中铁科建工程有限公司 | Engineering construction method of underground protective structure |
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| CN115012394A (en) * | 2022-06-15 | 2022-09-06 | 福州市规划设计研究院集团有限公司 | Prestressed steel plate concrete underground continuous wall and design and construction method thereof |
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