CN106320349A - Foundation-pit reinforcement supporting device - Google Patents

Foundation-pit reinforcement supporting device Download PDF

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Publication number
CN106320349A
CN106320349A CN201610972672.8A CN201610972672A CN106320349A CN 106320349 A CN106320349 A CN 106320349A CN 201610972672 A CN201610972672 A CN 201610972672A CN 106320349 A CN106320349 A CN 106320349A
Authority
CN
China
Prior art keywords
purlin
support
groove
foundation ditch
construction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610972672.8A
Other languages
Chinese (zh)
Inventor
王家辉
高义
刘玄
莫华
谢辉勇
兰泽全
王育斌
唐教青
杨文奇
自汝飞
钟厚超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Province's Water Conservancy And Hydropower 3rd Co Ltd Of Engineering Bureau
Guangdong No3 Water Conservancy and Hydro Electric Engineering Board Co Ltd
Original Assignee
Guangdong Province's Water Conservancy And Hydropower 3rd Co Ltd Of Engineering Bureau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Province's Water Conservancy And Hydropower 3rd Co Ltd Of Engineering Bureau filed Critical Guangdong Province's Water Conservancy And Hydropower 3rd Co Ltd Of Engineering Bureau
Priority to CN201610972672.8A priority Critical patent/CN106320349A/en
Publication of CN106320349A publication Critical patent/CN106320349A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits

Abstract

The application relates to a foundation pit reinforcement supporting device. The foundation pit reinforcement supporting device comprises sheet piles provided on the sidewalls of both ends of the foundation pit and a combined support portion supported between the sheet piles; the combined support portion includes sliding slots provided on the sheet piles, two purlins on the sliding slots, and a brace arranged between the two purlins for support. With the segmented design, the foundation pit reinforcement supporting device can be integrally and independently constructed according to the local conditions, and can be constructed and assembled in different foundation pit sections. In different geological environments in the premise of safe construction, different costs of foundation pit reinforcement support devices can be selected, and cost can be well controlled. The purlins can slide longitudinally, the mounting process is simple and fast, labor intensity is reduced, and work efficiency is improved. Through the bolt holes reserved on the sheet piles, the combined support portion is connectively fixed on the sheet piles in a bolt manner, and the steel wire rope is used to strengthen the purlin, which increases the safety of the construction and ensures the safety of the construction work to a certain extent.

Description

Foundation ditch strengthening suspension device
Technical field
The present invention relates to engineering construction technical field, in particular to a kind of foundation ditch strengthening suspension device.
Background technology
Foundation ditch is the heatable adobe sleeping platform excavated by substrate absolute altitude and basic plane size in basic engineering position.Should basis before excavation Geological hydrology data, in conjunction with on-the-spot nearby buildings situation, determines excavation plan, and performs water-proof drainage work.Excavate the deepest Person can make Stability of Earth Slopes with putting the way of side slope, and its gradient size is determined by relevant construction regulation.Excavation is relatively deep and neighbouring builds The person that builds thing, available foundation pit walls method for protecting support, gunite concrete wall protecting method, Large Foundation Pit even uses diaphram wall and colonnade The methods such as formula cast-in-situ bored pile is chain, outside protection soil layer collapse into;Nearby building is without influencer, and available well-point method reduces underground Water level, uses and puts slope open cut;Natural cold air freezing process excavation etc. can be used at cold district.
Architectural engineering pit is mainly used in cushion cap, abutment and Extended chemotherapy construction, is generally divided into non-support and has supporting two Class.
At present, along with China national power, the rising of economic strength, flourish along with urban construction, in all parts of the country big-and-middle Small city skyscraper elevated bridge emerging like the mushrooms after rain, gradually increasing of skyscraper, also cause in city Building is more and more intensive.
Rapidly growing along with the flourish of Building Trade in China and skyscraper in recent years.Also promote deep foundation pit support The development of technology.Due to, in present city, the spacing between building is less, brings the biggest difficulty to basic engineering construction.
Owing to using the demand of function and the exploitation underground space to improve constantly, nowadays general skyscraper, multilamellar are built Build and all just propose the underground space that build big planar dimension, that have certain depth in the design phase.
In municipal works pipeline foundation pit construction, steel sheet pile, steel is generally used to enclose purlin, steel pipe internal stay compound mode carries out base Hole supporting.This combination type support technology is current wide variety of method in municipal pipeline foundation pit construction.This construction technology Reinforcing combination connect and be usually: steel encloses purlin and steel sheet pile, and to be connected by mechanical engagement artificial, hangs steel wire at steel sheet pile top Rope carries out simple connection reinforcing;Steel pipe internal stay is connected by mechanical engagement manually with enclosing purlin, reserves notch card by steel pipe internal stay Enter to enclose purlin to carry out simple connection and fix.
The reinforcing connected mode poor stability of current this support technology, construction inconvenience, cost is high.Steel encloses purlin and needs welding Fixing, temporary consolidation is on steel sheet pile, it is impossible to transposition saves, and removes difficulty;The suspension of steel pipe internal stay is fixed on steel and encloses on purlin, operation letter Clean, construction safety is relatively difficult to ensure card.
Summary of the invention
In view of this, the application to solve the technical problem that the defect being to overcome prior art, it is provided that a kind of foundation ditch adds Clamped protection unit, encloses purlin and reinforces the problem of poor stability, facilitate site operation, accelerate during solving foundation pit support construction Construction speed, construction safety is reliable.
There is provided a kind of foundation ditch strengthening suspension device, including being arranged at the sheet pile of described foundation ditch two ends side-walls and being supported in institute State the combined support portion between sheet pile;
Described combined support portion includes the sliding draw-in groove being located on described sheet pile, is located at enclosing on described sliding draw-in groove Purlin, and be located at described in two enclose between purlin for support stull.
Described sheet pile deviates from the vertical direction of described foundation pit side-wall side and is provided with the described sliding for enclosing purlin described in support Formula draw-in groove.
Described enclose purlin and described sliding draw-in groove clamping.
Described enclose purlin and described stull clamping.
Described sliding draw-in groove removably connects with described sheet pile.
Described sliding draw-in groove is provided with the position, hole for being connected with described sheet pile.
The described purlin that encloses is that I shape encloses purlin.
Described combined support portion includes the first combined support portion and the second combined support portion;Described first combined support portion with The distance of original ground, and the distance ratio of described second combined support portion and original ground is 1:3.5~4.5.
Described combined support portion also includes the tension member enclosing purlin and described sliding draw-in groove described in connect.
Described sliding draw-in groove is L-shaped.
Compared with current the most existing foundation ditch strengthening suspension device, the foundation ditch strengthening suspension device of the application have as Lower advantage:
1, modularized design makes foundation ditch strengthening suspension device individually to construct.Different terrain difference geology is selected by sectional The foundation ditch strengthening suspension device of different model size, finally carries out splicing or other work, treatment in accordance with local conditions;
2, can cratered section construct simultaneously.Can construct for large area hole section simultaneously, sectional, improves unit in charge of construction Personnel assignment ratio, improves work efficiency;
3, the classification construction such as soil property and landform can be divided.Different geological environments have different hard for foundation ditch strengthening suspension device Degree requirement, such as southern weak soil etc., if the construction of foundation ditch strengthening suspension device sectional, then can be at different geological environments in safety Select the foundation ditch strengthening suspension device of different cost on the premise of construction, so can preferably accomplish to control cost;
4, use construction equipment to coordinate artificial, rapid construction can be realized;
5, the connected mode of clamping avoids weld job, decreases labor intensity, improves efficiency of construction;
6, enclosing purlin with sliding draw-in groove is clamping, and uses tension member to be fixed, and such design substantially increases to be executed The degree of safety of work, makes the safety of Contraction in Site have certain guarantee.
In sum, the structure that the present invention is special, it has above-mentioned many advantages and practical value, and at like product In there are no similar method and publish or use and really belong to innovation, create handy and practical effect, more existing skill Art has multinomial effect of enhancement, thus is more suitable to practicality, and has industrial value widely.
Coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
It should be appreciated that the following drawings illustrate only some embodiment of the application, therefore it is not construed as model The restriction enclosed, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these Accompanying drawing obtains the accompanying drawing that other are relevant.
Fig. 1 is the structural representation of the application;
Fig. 2 is combined support portion cross section structure schematic diagram;
Fig. 3 be the application sliding draw-in groove with enclose purlin annexation figure.
Drawing reference numeral illustrates:
Title Label
Foundation ditch strengthening suspension device 1
Sheet pile 11
Combined support portion 12
Sliding draw-in groove 121
Enclose purlin 122
Stull 123
First combined support portion 124
Second combined support portion 125
Detailed description of the invention
Hereinafter, accompanying drawing will be combined it will be described more fully with the various embodiments of the disclosure.The disclosure can have various reality Execute example, and can adjust wherein and change.Therefore, will retouch in more detail with reference to specific embodiment illustrated in the accompanying drawings State the disclosure.It should be understood, however, that: there is not the meaning that the various embodiments of the disclosure are limited to specific embodiment disclosed herein Figure, but all adjustment that should be interpreted as the disclosure containing in the spirit and scope of the various embodiments falling into the disclosure, etc. Jljl and/or alternative.Description taken together with the accompanying drawings, the element that same reference numerals is same.
Hereinafter, the term that can use in the various embodiments of the disclosure " includes " or " can include " instruction is disclosed The existence of function, operation or element, and be not intended to the increase of one or more function, operation or element.Additionally, such as exist Used in the various embodiments of the disclosure, term " includes ", " having " and cognate thereof are meant only to represent special characteristic, number Word, step, operation, element, assembly or the combination of aforementioned item, and be understood not to first get rid of one or more other The existence of the combination of feature, numeral, step, operation, element, assembly or aforementioned item or increase one or more feature, numeral, The probability of the combination of step, operation, element, assembly or aforementioned item.
In the various embodiments of the disclosure, statement "or" or " A or/and in B at least one " include listing file names with Any combination of word or all combinations.Such as, statement " A or B " or " A or/and in B at least one " can include A, can include B maybe can include A and B both.
The statement (such as " first ", " second " etc.) used in the various embodiments of the disclosure can be modified in various enforcements Various element in example, but corresponding element can be not intended to.Such as, presented above it is not limiting as the suitable of described element Sequence and/or importance.The purpose being only used for differentiating an element with other element presented above.Such as, first user dress Put and the second user's set instruction different user device, although both of which is user's set.Such as, each without departing from the disclosure In the case of planting the scope of embodiment, the first element is referred to alternatively as the second element, and similarly, the second element is also referred to as first Element.
If an element be ' attach ' to another element it should also be noted that describe, then can be by the first composition unit Part is directly connected to the second element, and " can connect " the 3rd composition between the first element and the second element Element.On the contrary, when an element " being directly connected to " to another element, it will be appreciated that at the first element With second do not exist the 3rd element between element.
The term used in the various embodiments of the disclosure is only used for describing the purpose of specific embodiment and not anticipating In the various embodiments limiting the disclosure.As used herein, singulative is intended to also include plural form, unless context is clear Chu ground is indicated otherwise.Unless otherwise defined, all terms (including technical term and the scientific terminology) tool being otherwise used herein The implication that the implication that has the various embodiment one skilled in the art with the disclosure to be generally understood that is identical.Described term (term such as limited in the dictionary generally used) is to be interpreted as to be had and the situational meaning in correlative technology field Identical implication and there is Utopian implication or the most formal implication by being not construed as, unless various in the disclosure Embodiment is clearly defined.
Embodiment
See accompanying drawing 1 to accompanying drawing 3, this application provides foundation ditch strengthening suspension device 1, including being arranged at described foundation ditch two ends The sheet pile 11 of side-walls and the combined support portion 12 being supported between described sheet pile 11;
Described combined support portion 12 includes the sliding draw-in groove 121 being located on described sheet pile 11, is located at described sliding card Enclose purlin 122 on groove 121, and be located at described in two and enclose between purlin 122 for the stull 123 supported.
Above-mentioned, foundation ditch is the heatable adobe sleeping platform excavated by substrate absolute altitude and basic plane size in basic engineering position.Before excavation Should be according to geology hydrological data, in conjunction with on-the-spot nearby buildings situation, determine excavation plan, and perform water-proof drainage work.Open Digging deep person and can make Stability of Earth Slopes with putting the way of side slope, its gradient size is determined by relevant regulation of constructing.Excavate deeper and adjacent The person that closely has building, available foundation pit walls method for protecting support, gunite concrete wall protecting method, Large Foundation Pit even uses diaphram wall The method such as chain with colonnade formula cast-in-situ bored pile, outside protection soil layer collapse into;Nearby building is without influencer, available well-point method fall Phreatic low, uses and puts slope open cut;Natural cold air freezing process excavation etc. can be used at cold district.
It is to be appreciated that base pit engineering refers to as ensureing foundation pit construction, the safety of main body underground structure and surrounding The supporting construction, precipitation and the earth excavation that are without prejudice and take and backfill, including reconnoitring, design, construct, monitor and detecting Deng, referred to as base pit engineering.Base pit engineering integrates Geological Engineering, Geotechnical Engineering, Structural Engineering and ground measuring technology System engineering.Its main contents: engineering investigation, support structure design and construction, earth excavation and backfill, Groundwater Control, letter Breathization construction and surrounding enviroment protection etc..The simplest, the most economical way of foundation pit construction is to amplify slope excavation, but is often subject to Site condition, the restriction of surrounding enviroment, so needing to design support system being smoothed out with guarantee construction, and can preferably protect Protect surrounding enviroment.
It is to be appreciated that base pit engineering has some feature following:
1, base pit engineering has bigger risk.Foundation pit supporting system is generally interim measure, its load, intensity, change The safety stock of the aspects such as shape, antiseepage, durability is less.
2, base pit engineering has obvious provincial characteristics.Zones of different has different engineering geology and hydrogeology bar Part, even if being likely in same project have larger difference.
3, base pit engineering has obvious environmental conservation feature.The construction of base pit engineering can cause WATER LEVEL CHANGES around With the change of stress field, cause the deformation of surrounding soil, environment adjacent can be produced impact.
4, base pit engineering theory is not perfect.Base pit engineering is ground, structure and cross one another science of constructing, and is subject to Various Complex factor influences each other, and it waits to develop further at aspects such as earth pressure theory, design of foundation pit computational theories.
5, base pit engineering has the strongest personal feature.The multiformity of Regional Geological Conditions residing for foundation ditch, foundation ditch Zhou Bianhuan The complexity in border, the multiformity of foundation ditch shape, the multiformity of pattern foundation pit supporting structure form, determine base pit engineering and have the most individual Property.
It is to be appreciated that pattern foundation pit supporting structure is for ensureing Underground Construction and the safety of foundation ditch surrounding enviroment, to foundation ditch A gear, reinforcing and the protective measure that sidewall and surrounding enviroment use.
Pattern foundation pit supporting structure is determined by People's Republic of China's industry standard " building foundation pit supporting technical regulation " JGJ120-2012 Justice is as follows:
For main structure construction under protecting field and the safety of foundation ditch surrounding enviroment, provisional gear that foundation ditch is used, add Gu, protection and the measure of Groundwater Control.
It is to be appreciated that " building foundation pit supporting technical regulation " (JGJ120-99) is to base hole sides safety grade and weight Property coefficient is wanted to provide as follows:
1, safe class: one-level;Consequence of failure: Support structure damage, sediment failure or excessive deformation are to foundation ditch Zhou Bianhuan Border and underground structure impact are the most serious;Important coefficient: 1.10.
2, safe class: two grades;Consequence of failure: Support structure damage, sediment failure or excessive deformation are to foundation ditch Zhou Bianhuan Border and underground structure impact are general;Important coefficient: 1.00;
3, safe class: three grades;Consequence of failure: Support structure damage, sediment failure or excessive deformation are to foundation ditch Zhou Bianhuan Border and underground structure impact are the most serious;Important coefficient: 0.90.
It is to be appreciated that common pattern foundation pit supporting structure form mainly has:
1, campshed supporting, stake support, piled anchor, campshed cantilever;
2, diaphram wall supporting, ground-connecting-wall+support;
3, cement retaining wall;
4, steel sheet pile: Section-steel Piles lagging supporting, steel sheet pile supporting;
5, soil nail wall (combined bolting and shotcrete);
6, against making arch wall;
7, undisturbed soil puts slope;
8, internal support of foundation pit;
9, stake, wall add support system;
10, simple horizontal supports;
11, armored concrete campshed;
12, above two or the reasonable combination etc. of two or more mode.
Foundation ditch strengthening suspension device in the application, is made up of two large divisions, is sheet pile 11 and group and fixed part respectively, specifically For, it is made up of four parts, is sheet pile 11, sliding draw-in groove 121 respectively, encloses purlin 122 and stull 123.
Preferably, in the application, sheet pile 11 uses employing Larsen III, IV shaped steel plate pile, and length is generally 6m or 9m; Stull 123 is steel pipe stull 123, uses D350, t=8 type stull 123.
It is to be appreciated that foundation ditch strengthening suspension device 1 uses sectional design in the application, i.e. entirety is divided into Four major parts, install, and so advantage of design is:
1, can individually construct.Sectional selects the foundation ditch strengthening supporting dress of different model size to different terrain difference geology Put 1, finally carry out splicing or other work, treatment in accordance with local conditions.
2, can cratered section construct simultaneously.Can construct for large area hole section simultaneously, sectional, improves unit in charge of construction Personnel assignment ratio, improves work efficiency.
3, the classification construction such as soil property and landform can be divided.Different geological environments have different for foundation ditch strengthening suspension device 1 Hardness requirement, such as southern weak soil etc., if the construction of foundation ditch strengthening suspension device 1 sectional, then can exist at different geological environments Select the foundation ditch strengthening suspension device 1 of different cost on the premise of safe construction, so can preferably accomplish to control cost.
Described sheet pile 11 deviates from the vertical direction of described foundation pit side-wall side and is provided with for enclosing described in support described in purlin 122 Sliding draw-in groove 121.
Described enclose purlin 122 and the clamping of described sliding draw-in groove 121.
Described enclose purlin 122 and described stull 123 clamping.
Above-mentioned, enclose purlin 122 and generally refer to the girder steel (or claiming fore shaft beam) that support pile (such as steel sheet pile) top is arranged.
It is to be appreciated that enclose purlin 122, also referred to as steel enclosing or steel waling.Double Pin or the many Pin model phase of general employing With and the identical type I shape steel of length splice.Joining quality to be ensured in splicing, it is ensured that multiple shaped steel are common Stress.Enclosing purlin 122 to support and fender post for connecting, pea gravel concreten need to be filled in the space between them, plays fixing support Effect and the effect of transmission load
In the application, it is designed as enclosing purlin 122 and the clamping of sliding draw-in groove 121 by enclosing the purlin 122 annexation with sheet pile 11, Sliding draw-in groove 121 is connected with sheet pile 11.During Specific construction, first on sheet pile 11 opposite position for sliding draw-in groove 121 Install, it is ensured that sheet pile 11 horizontal level at foundation ditch two ends all has sliding draw-in groove 121, then by equipment such as construction machineries Lifting for enclosing purlin 122 and stull 123, enclosing purlin 122 can carry out vertical longitudinal direction relative to fixing sliding draw-in groove 121 Sliding and adjustment.Sliding draw-in groove 121 has an effect lifted and support for enclosing purlin 122, can be for sliding draw-in groove 121 are designed in shape, as to sliding draw-in groove 121 with enclose purlin 122 opposite position and add the design of locating slot, such It is designed with the beneficially target of alignment construction accurately during constructing operation, reduces deviation.
Such modularity is installed, and has some advantage following:
1, use construction equipment to coordinate artificial, rapid construction can be realized;
2, the connected mode of clamping avoids weld job, decreases labor intensity, improves efficiency of construction.
Described sliding draw-in groove 121 removably connects with described sheet pile 11.
Described sliding draw-in groove 121 is provided with the position, hole for being connected with described sheet pile 11.
Above-mentioned, spiro keyhole position can be reserved in relevant position in advance for sheet pile 11, at sliding draw-in groove 121 before construction Prepared screw-bolt hole position too, relevant position;So, in work progress can in advance for sliding draw-in groove 121 at sheet pile 11 Position rapid construction, installation.
It is to be appreciated that sliding draw-in groove 121 is prepared screw-bolt hole with the assembly and connection mode of sheet pile 11 in the application Position is bolted fixing.Connected mode is not limited to the embodiment in the application, also can have other multiple connections and fix Mode, such as in preformed hole position, sheet pile 11 position, sliding draw-in groove 121 is docked by position, hole with sheet pile 11, and carries out anchor Gu etc. mode.
It is to be appreciated that the connected mode enclosing purlin 122 and stull 123 in the application is clamping, connected mode is not limited to Embodiment in the application, also can have other multiple connections and fixing mode, as corresponding with enclosing purlin 122 in stull 123 Prepared screw-bolt hole position, position, is attached by bolt;Or to carry out binding etc. many to enclosing purlin 122 and stull 123 to utilize steel wire rope Plant connected mode.
The installation method of this bolt-type, by preformed hole position on sheet pile, bolt-type is fastened on sheet pile 11, or Enclose purlin 122 and stull 123, enclose the purlin 122 clamping with sliding draw-in groove 121, all considerably increase the degree of safety in work progress, And improve work efficiency, simultaneously because reserving in advance of position, corresponding hole, also improve the degree of accuracy of installation site, accomplish essence Accurate construction one to one, improves work efficiency.
Preferably, in the application, sliding draw-in groove 121 uses composite material, and preprocessing completes in advance;Every section of card Groove may be designed as long 8m, thick 2cm, and sliding draw-in groove 121 is connected with sheet pile 11 by M3 × 17 high-strength bolt.Sliding draw-in groove 121 with sheet pile 11 every 1m at correspondence position prepared screw-bolt hole.
The described purlin 122 that encloses encloses purlin 122 for I shape.
Above-mentioned, the purlin 122 that encloses in the application is steel and encloses purlin, and it is steel structure girder, subway foundation pit or deep basal pit that steel encloses purlin Going along with sb. to guard him the main member in supporting, steel encloses the structure of purlin should be suitable for safety specifications, is suitable for again manufacturing, and existing steel encloses Purlin is numerous in variety, and version differs.
Preferably, in the application, purlin 122 model is enclosed in employing is HW400 × 400 × 13/21, is I-steel cross section, highly 400mm, width 400mm, web thickness 13mm, flange plate thickness 21mm.During Specific construction, can support according to needs are fixing The difference of terrain environment specifically use unlike material, model I shape enclose purlin 122 or other enclose purlin.
Described combined support portion 12 includes the first combined support portion 124 and the second combined support portion 125;Described first combination The distance of supporting part 124 and original ground, and the distance ratio of described second combined support portion 125 and original ground be 1:3.5~ 4.5。
Above-mentioned, it is to be understood that the foundation ditch of the application indication is by substrate absolute altitude and basic plane in basic engineering position The heatable adobe sleeping platform that size is excavated.In conjunction with on-the-spot nearby buildings situation, excavation side should be determined according to geology hydrological data before excavation Case, and perform water-proof drainage work.The deep person of excavation can make Stability of Earth Slopes with putting the way of side slope, and its gradient size is by relevant Construction regulation determines.Excavation is relatively deep and the neighbouring person that has building, available foundation pit walls method for protecting support, gunite concrete wall protecting method, Large Foundation Pit even uses diaphram wall and the method such as colonnade formula cast-in-situ bored pile is chain, outside protection soil layer collapse into;Attached Closely build without influencer, available well-point method lowering of watertable, use and put slope open cut;Natural cold air can be used to freeze at cold district Connection excavation etc..
It is to be appreciated that base pit engineering mainly includes foundation pit supporting system design and construction and earth excavation, it it is one The strongest comprehensive system engineering.It requires Geotechnical Engineering and Structural Engineering technical staff's close fit.Foundation pit supporting system is Temporary structure, is no longer needed for after underground engineering construction completes.
It is to be appreciated that the definition of deep basal pit: it is " dangerous bigger about printing and distributing that the Ministry of Construction builds [2009] No. 87 literary compositions of matter The notice of part-to-item project safety management way " regulation: general deep basal pit refers to that cutting depth is more than 5 meters (containing 5 meters) or ground Lower room three floor above (containing three floor), though or the degree of depth is not less than 5 meters, but geological conditions and surrounding and underground utilities are especially complex Engineering.
General definition deep basal pit is: floor space is within 27 square metres, and long limit, the end is less than three times of minor faces, and cutting depth is not Less than 5 meters or basement is no less than three layers, though or the degree of depth is less than 5 meters, but geological conditions and surrounding and underground utilities are special Complicated engineering, on the contrary then cheat for shallow foundation.
In the application, the excavation of foundation pit degree of depth can be between 4.5m-7m.Combined support portion 12 is laterally horizontal direction, can depend on According to the horizontally arranged installation in sliding draw-in groove position;Longitudinally can be set to two groups of combined support portions 12 according to locus, top First combined support portion 124 is set to distance original ground 1m, and the second combined support portion 125 can distance the first combined support portion 1243.5-4m, particular location can adjust accordingly according to practical situation, geological environment, combined support portion 12 or sheet pile 11 hardness
Described combined support portion 12 also includes the tension member enclosing purlin 122 described in connect with described sliding draw-in groove 121.
Above-mentioned, tension member is sliding draw-in groove 121 in fixed Combination supporting part 12 and enclose the steel wire rope of purlin 122, can set It is calculated as segmentation sliding draw-in groove 121 is fixed with enclosing purlin 122, it is possible to by sheet pile 11 fixed hole position for enclosing purlin 122 Carry out drawknot to fix, additionally, it is possible to carry out not according to the material of different geological environments, different spaces environment or different construction material With the drawknot of mode, coordinative construction.Enclosing purlin 122 with sliding draw-in groove 121 is clamping, and uses tension member to be fixed, so Design substantially increase the degree of safety of construction, make the safety of Contraction in Site have certain guarantee.
Described sliding draw-in groove 121 is L-shaped.
Above-mentioned, sliding draw-in groove 121 is designed as L-shaped, and such shape can be convenient to pre-with the side faced by sheet pile 11 Staying the hole position corresponding with sheet pile 11, opposite side can carry out clamping for enclosing purlin 122 simultaneously, has the effect of support simultaneously, this Sample design improves the degree of safety of construction the most to a certain extent.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. foundation ditch strengthening suspension device, it is characterised in that:
Including the sheet pile being arranged at described foundation ditch two ends side-walls and the combined support portion being supported between described sheet pile;
Described combined support portion include the sliding draw-in groove being located on described sheet pile, be located on described sliding draw-in groove enclose purlin, And be located at described in two enclose between purlin for support stull.
2. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described sheet pile deviates from described foundation pit side-wall side Vertical direction be provided with the described sliding draw-in groove for enclosing purlin described in support.
3. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that enclose purlin and described sliding draw-in groove card described in: Connect.
4. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that enclose purlin and described stull clamping described in:.
5. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described sliding draw-in groove is removable with described sheet pile Unload connection.
6. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described sliding draw-in groove is all provided with described sheet pile It is equipped with the position, hole for connecting.
7. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that enclosing purlin described in: is that I shape encloses purlin.
8. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described combined support portion includes that the first combination is propped up Support part and the second combined support portion;Described first combined support portion and the distance of original ground, and described second combined support portion It is 1:3.5~4.5 with the distance ratio of original ground.
9. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described combined support portion also includes for connecting The described tension member enclosing purlin and described sliding draw-in groove.
10. foundation ditch strengthening suspension device as claimed in claim 1, it is characterised in that: described sliding draw-in groove is L-shaped.
CN201610972672.8A 2016-10-28 2016-10-28 Foundation-pit reinforcement supporting device Pending CN106320349A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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