CN106703015A - Steel plate concrete prefabricated part, permanent-temporary combined underground enclosure system and construction methods - Google Patents

Steel plate concrete prefabricated part, permanent-temporary combined underground enclosure system and construction methods Download PDF

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Publication number
CN106703015A
CN106703015A CN201611258247.9A CN201611258247A CN106703015A CN 106703015 A CN106703015 A CN 106703015A CN 201611258247 A CN201611258247 A CN 201611258247A CN 106703015 A CN106703015 A CN 106703015A
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CN
China
Prior art keywords
steel plate
concrete prefabricated
wall
face
prefabricated parts
Prior art date
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Pending
Application number
CN201611258247.9A
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Chinese (zh)
Inventor
胡玉银
周锋
陈建兰
崔晓强
李琰
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.)
Shanghai Construction Group Co Ltd
Shanghai Mechanized Construction Group Co Ltd
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Shanghai Construction Group Co Ltd
Shanghai Mechanized Construction Group Co Ltd
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 Shanghai Construction Group Co Ltd, Shanghai Mechanized Construction Group Co Ltd filed Critical Shanghai Construction Group Co Ltd
Priority to CN201611258247.9A priority Critical patent/CN106703015A/en
Publication of CN106703015A publication Critical patent/CN106703015A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/20Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

The invention discloses a steel plate concrete prefabricated part, a permanent-temporary combined underground enclosure system and construction methods, and belongs to the field of underground engineering design and construction. The steel plate concrete prefabricated part comprises a reinforced concrete beam and a steel plate with fore shafts at the two ends. The steel plate is welded to the side vertical face of the reinforced concrete beam. By means of the steel plate concrete prefabricated part in the structural way, the steel plate can be quite conveniently spliced into a steel plate wall, the reinforced concrete beam and the steel plate wall work together, the layout is reasonable, the structure is stable and prefabricating is convenient. The invention further discloses an underground enclosure structure manufactured from the steel plate concrete prefabricated part. The underground enclosure structure has good waterproof and mechanical properties, and can meet the requirements of both a construction period and an operation stage for the underground enclosure system. Meanwhile, the invention further provides the construction method of the steel plate concrete prefabricated part and the construction method of the permanent-temporary combined underground enclosure system. Working procedures are simple, and construction efficiency is high.

Description

Steel plate concrete prefabricated parts, forever-face and descend retaining design and construction method in combination
Technical field
The present invention relates to a kind of steel plate concrete prefabricated parts, forever-face and descend retaining design and construction method in combination, belong to underground Engineering design and construction field.
Background technology
Underground exterior-protected structure is widely used in underground engineering construction stage and operation stage.Generally, the underground of construction stage Building enclosure is provisional building enclosure, and the underground exterior-protected structure of operation stage is permanent building enclosure, the structure of the two Had differences with effect, can not be substituted for each other.
At present, being applied to the building enclosure in underground engineering construction stage mainly has cement mixing method, steel sheet pile, SMW works Method stake (also known as Rigid cable), cast-in-situ bored pile and diaphram wall;It is applied to enclosing for underground engineering operation stage Protection structure system mainly has reinforced concrete wall and diaphram wall.However, only diaphram wall can go along with sb. to guard him knot by provisional Structure and permanent building enclosure unite two into one, and other provisional building enclosures can not meet underground at aspects such as intensity, waterproofs The requirement in operation of engineering projects stage, therefore, it is difficult to as permanent building enclosure.
The underground exterior-protected structure of construction stage and operation stage is separated, and increased working procedure, reduces efficiency of construction, also Waste of material can be caused, construction cost is raised.And this " two-in-one " underground exterior-protected structure of diaphram wall there is also following lacking Point:Working procedure is complicated, construction technical requirement is high, construction costs is high, slurrying and processing system take up an area larger, high material consumption, Ambient influnence is big, and diaphram wall rough surface, it is necessary to treatment is carried out to surface could be used as permanent building enclosure.
The content of the invention
Underground exterior-protected structure for construction stage in the prior art and operation stage is difficult to the phase for being substituted for each other and existing Answer problem, the invention provides a kind of steel plate concrete prefabricated parts, and be made using the steel plate concrete prefabricated parts forever-face knot Underground retaining design is closed, the underground retaining design has preferably earth-retaining, sealing and waterproof effect, disclosure satisfy that the construction stage Required with operation stage, but also there is simple operation, easy construction, material, reduces cost is saved.Meanwhile, this hair It is bright to additionally provide a kind of construction method of steel plate concrete prefabricated parts, and forever-face the construction method for descending retaining design in combination.
To solve above technical problem, the present invention includes following technical scheme:
A kind of steel plate concrete prefabricated parts, including reinforced beam and steel plate, the Interal fixation are arranged at the reinforcing bar On one side elevation of beams of concrete, the width of the width more than the cross section of reinforced beam of the steel plate, the steel plate tool There are two ends being parallel to each other with the longitudinal axis of the reinforced beam, the end of the steel plate is provided with lock Mouthful.
Preferably, the steel plate and the position relationship of the reinforced beam are following one:
A1. the cross section of the reinforced beam is rectangle, and the steel plate is perpendicular to the side long of rectangular cross section;
A2. the cross section of the reinforced beam is T-shaped, the edge of a wing of the steel plate parallel to T-shaped cross section;
A3. the cross section of the reinforced beam is I-shaped, the edge of a wing of the steel plate parallel to I-shaped cross section.
Preferably, the steel plate is welded on the stirrup of the steel plate concrete prefabricated parts.
Present invention also offers it is a kind of forever-face and descend retaining design in combination, if including being arranged in Soil-cement Wall The dry steel plate concrete prefabricated parts as described in claims 1 to 3 is any, the steel plate is spliced into steel plate wall by the fore shaft, institute That states that beams of concrete is respectively positioned on the steel plate wall meets native face side.
Preferably, the steel plate concrete prefabricated parts meet condition:H1> > H2, wherein, H1It is the reinforced beam The distance in distance from bottom excavation of foundation pit face, H2It is the distance in the distance from bottom excavation of foundation pit face of the steel plate.
Preferably, the cross section of the reinforced beam more than excavation of foundation pit face, near the steel plate wall one Cross sectional area of the cross sectional area of the vertical muscle of side less than the vertical muscle away from the steel plate wall side.
Preferably, the cross section of the reinforced beam below excavation of foundation pit face, near the steel plate wall one The cross sectional area of the vertical muscle of side is equal to the cross sectional area of the vertical muscle away from the steel plate wall side.
Correspondingly present invention also offers a kind of construction method of steel plate concrete prefabricated parts, it is characterised in that including as follows Step:
S1:The vertical muscle and stirrup of assembling reinforcement beams of concrete, form framework of steel reinforcement;
S2:On the basis of steel plate with fore shaft is lain against, the framework of steel reinforcement in step S1 is lain against on the steel plate, Make the vertical muscle parallel with the fore shaft, the steel plate is welded with the stirrup;
S3:Install the side template of the both sides of the reinforced beam and the Side Template of termination;
S4:The casting concrete in the space that the steel plate, side template and Side Template are surrounded, treats that concrete strength reaches and tears open After mould intensity requirement, the side template and Side Template are removed.
Correspondingly present invention also offers it is a kind of forever-face the construction method of descending retaining design in combination, it is characterised in that bag Include following steps:
S1:The prefabricated steel plate concrete prefabricated parts;
S2:Mixing pile machine is set up, cement mixing method of constructing, cement mixing method mutually overlaps to form Soil-cement Wall;
S3:The 1st steel plate concrete prefabricated parts are inserted perpendicularly into the Soil-cement Wall;
S4:By the fore shaft phase of the fore shaft of N+1 steel plate concrete prefabricated parts and steel plate concrete prefabricated parts described in n-th Mutually fasten, and the N+1 steel plate concrete prefabricated parts are inserted perpendicularly into the Soil-cement Wall, wherein N >=1;
S5:Repeat step S4, until the steel plate wall of steel plate composition reaches design length.
Preferably, step S6 is also included after step s 5:By the horizontal support structure phase in the steel plate wall and foundation ditch Connection, forms the underground exterior-protected structure of the foundation ditch.
Preferably, treat that the pitted surface side Underground Construction of meeting of the steel plate wall is completed, by underground exterior-protected structure system The steel plate is welded into one at fore shaft, and completes the anticorrosive construction of the steel plate wall, so as to form underground engineering operation The permanent structural protective system in stage.
The present invention is allowed to compared with prior art, have the following advantages that and actively imitate due to using above technical scheme Really:
(1) present invention provide forever-face and descend retaining design in combination, steel plate concrete prefabricated parts are placed in Soil-cement Wall In, with preferably earth-retaining, water-stagnating effect, can simultaneously meet the construction stage and operation stage requires;
(2) present invention provide forever-face and descend retaining design in combination, steel plate concrete prefabricated parts are only more than excavation of foundation pit face Part sets steel plate wall, and while waterproof requirement is met, saving steel reduces steel using amount;
(3) steel plate two ends are provided with fore shaft, and convenient steel plate is spliced into steel plate wall, improve the efficiency of construction of steel plate wall.
Brief description of the drawings
A kind of cross-sectional view of the steel plate concrete prefabricated parts that Fig. 1 is provided for first embodiment of the invention;
Another cross-sectional view of the steel plate concrete prefabricated parts that Fig. 2 is provided for first embodiment of the invention;
Another cross-sectional view for the steel plate concrete prefabricated parts that Fig. 3 is provided for first embodiment of the invention;
The steel plate splicing schematic diagram that Fig. 4 is provided for first embodiment of the invention;
The structural representation of second fore shaft that Fig. 5 is provided for first embodiment of the invention;
The splicing schematic diagram of second fore shaft that Fig. 6 is provided for first embodiment of the invention;
Fig. 7 for second embodiment of the invention provide forever-face the top view for descending retaining design in combination;
Fig. 8 is the sectional view in Fig. 7 along 1-1 sections;
The flow chart of the construction method of the steel plate concrete prefabricated parts that Fig. 9 is provided for third embodiment of the invention;
Figure 10 for fourth embodiment of the invention provide forever-face the flow chart of the construction method for descending retaining design in combination.
Label is as follows in figure:
Steel plate concrete prefabricated parts 100;Reinforced beam 110;Vertical muscle 111;Stirrup 112;Concrete 113;Steel plate 120; Fore shaft 121;Female fore shaft 122,125;Male fore shaft 123,126;Hermaphroditic fore shaft 124;Steel plate wall 130;Soil-cement Wall 200;Foundation ditch top surface 201;Excavation of foundation pit face 202.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to the present invention provide steel plate concrete prefabricated parts, forever-face and enclose down in combination Watch box system and construction method are described in further detail.With reference to following explanation and claims, advantages and features of the invention To become apparent from.It should be noted that, accompanying drawing using very simplify in the form of and use non-accurately ratio, be only used to conveniently, Lucidly aid in illustrating the purpose of the embodiment of the present invention.
Embodiment one
Refer to Fig. 1, a kind of cross-sectional view of the steel plate concrete prefabricated parts that Fig. 1 is provided by the present embodiment.In Fig. 1, steel Plate concrete prefabricated parts 100 include a cross section for the reinforced beam 110 of rectangle and positioned at the side of reinforced beam 110 The steel plate 120 of facade.Wherein, reinforced beam 110 includes vertical muscle 111, stirrup 112 and concrete 113.Wherein, steel plate 120 Width of the width more than the cross section of reinforced beam 110, the two ends of steel plate 120 are provided with fore shaft 121, one end is female Fore shaft 122, the other end is male fore shaft 123, and fore shaft 121 is parallel to each other with the longitudinal axis of reinforced beam 110.
The present embodiment has the following advantages that:The end of the steel plate sets fore shaft 123, it is possible to achieve the fast Speed Pinyin of steel plate 120 Connect, so as to form steel plate wall;Steel plate and reinforced beam are fused to holistic steel plate concrete prefabricated parts 100, can be made again Beams of concrete 110 and steel plate 120 cooperate and turn into supporting construction, meet mechanics principle, Stability Analysis of Structures, and the structure is adapted to Prefabrication, only needs simple concatenation at the construction field (site), is simple and convenient to operate with operation, high efficient construction.
In order to ensure that steel plate wall has preferable anti-bending strength, steel plate 120 can be adopted with the position relationship of reinforced beam 110 With one of following structure type:(1) as shown in figure 1, the cross section of reinforced beam 110 be rectangle, steel plate 120 perpendicular to The side long of the rectangular cross section, i.e. steel plate 120 be welded on the short side of rectangular cross section where side elevation on;(2) such as Fig. 2 institutes Show, the cross section of reinforced beam 110 is T-shaped, and parallel to the edge of a wing in T-shaped cross section, i.e. steel plate 120 is welded on T to steel plate 120 One end of the floor of type beam;(3) as shown in figure 3, the cross section of reinforced beam 110 is I-shaped, steel plate 120 is parallel to institute The edge of a wing in I-shaped cross section, i.e. steel plate 120 is stated to be welded on the edge of a wing of I-beam one end.The steel of above-mentioned three kinds of cross-sectional forms Concrete Beam Reinforced 110, has the advantages that to save material usage, reduces product cost.Steel plate 120 is in above-mentioned three kinds of cross-sectional forms Reinforced beam 110 on welding manner, ensure that steel plate wall has preferable flexing resistance.
In order that having more preferable connection effect between reinforced beam 110 and steel plate 120, steel plate 120 is mixed with reinforcing bar The stirrup 112 of solidifying soil beam 110 welds together, and steel plate 120 is as the protective layer for the side elevation stirrup, such armored concrete Beam 110 is an integrally-built steel plate concrete prefabricated parts 100 with the perfect adaptation of steel plate 120.As shown in fig. 1, rectangular cross section Wherein three sides be that used as stirrup 112 and the protective layer of vertical concrete steel plate 120, and another side passes through steel plate by concrete 113 120 weld with stirrup 112, make steel plate 120 as the protective layer of stirrup 112.Wherein, by steel plate 120 and stirrup 112 in concrete 113 pour before welded, when concrete 113 is poured, steel plate 120 as reinforced beam 110 bottom template, save Template consumption, and facilitate product prefabricated.
Fig. 4 illustrates the splicing schematic diagram of steel plate 120, wherein, male fore shaft 123 is vertically put into female fore shaft 122 Realize the quick splicing of steel plate 120.It should be noted that the structure type of fore shaft 121 can have many kinds, Fig. 5 is illustrated separately A kind of structural representation of fore shaft, the two ends of steel plate 120 respectively set a hermaphroditic fore shaft 124, and hermaphroditic fore shaft 124 is wrapped Include a female fore shaft 125 and male fore shaft 126;Fig. 6 is illustrated and how spliced one steel plate 120 using hermaphroditic fore shaft 124 Rise, by setting hermaphroditic fore shaft 124, realize double fastenings of the tie point of steel plate 120, make steel plate wall that there is preferably connection Effect.
Embodiment two
Refer to shown in Fig. 7 and Fig. 8, wherein Fig. 7 for the present embodiment provide forever-face the vertical view for descending retaining design in combination Figure, Fig. 8 is the sectional view in Fig. 7 along 1-1 sections.Below in conjunction with Fig. 7 and Fig. 8, and referring to figs. 1 to Fig. 6, the present embodiment is carried Supply forever-face and descend retaining design to be described further in combination.
Firstly the need of explanation, forever-face the underground retaining design for descend retaining design to refer to offer in the present invention in combination The requirement of the provisional retaining design of underground Construction stage and the permanent maintenance system of operation stage is met simultaneously.
The present invention provide forever-face and descend retaining design in combination, including be arranged at some steel in Soil-cement Wall 200 Plate concrete prefabricated parts 100, wherein, steel plate 120 is spliced into steel plate wall 130 by fore shaft 121, and beams of concrete 110 is respectively positioned on steel plate Wall 130 meets native face side.Wherein, steel plate wall 130, towards the side of foundation ditch to meet pitted surface, is to meet soil away from the one side of foundation ditch Face.
The present embodiment has the following advantages that:(1) Soil-cement Wall 200 be mutually to be overlapped by cement mixing method and Into, the density and stability of the soil body are increased, with stronger sealing effect, steel plate concrete prefabricated parts 100 is more stablized; (2) steel plate wall 130 formed by steel plate 120 has good waterproof effect, also can be to carrying out welding etc. at waterproof at fore shaft 121 Reason, further enhance the water resistance of steel plate wall 130, make steel plate wall 130 at the same reach underground retaining design the construction stage with The waterproof requirement of operation stage;(3) reinforced beam 110 being arranged in Soil-cement Wall 200 can bear larger water Flat active force, while reinforced beam 110 also has good flexing resistance.Therefore, by steel plate concrete prefabricated parts 100 and cement Soil stirring wall 200 composition forever-face and descend retaining design in combination, can simultaneously meet underground retaining design in construction stage and operation The intensity and waterproof requirement in stage, have the building beyond the region of objective existence in earth-retaining, the mine dam in excavation of foundation pit, and underground engineering operation concurrently Wall, perfection realizes that two walls are unified.
As shown in figure 8, the initial ground of excavation of foundation pit is foundation ditch top surface 201, the bottom of foundation ditch ground formed after excavation of foundation pit Face is excavation of foundation pit face 202.Reinforced beam 110 needs to undertake lateral soil pressure and hydraulic pressure as permanent building enclosure Power, therefore, the bottom of reinforced beam 110 need to stretch into the certain depth of excavation of foundation pit face 202, be designated as H1, it is steady to ensure its structure It is qualitative.And steel plate wall 200 need to only be tightly connected with building base plate, you can meet the waterproof requirement of buildings exterior-protected structure, because This, the bottom of steel plate 120 need to only stretch into the smaller depth of excavation of foundation pit face 202, be designated as H2.It is preferred embodiment, H1> > H2;Wherein, H1It is the distance in the distance from bottom excavation of foundation pit face 202 of reinforced beam 110, H2It is the distance from bottom of steel plate 120 The distance in excavation of foundation pit face 202.The present embodiment had both saved the rolled steel dosage of steel plate 120, but can meet forever-face and enclose down in combination Watch box system as the waterproof of the permanent exterior wall of underground structure and bending resistance, shearing resistance etc. various requirement.
As shown in figure 8, steel plate 120 can replace the function of vertical muscle 111, therefore in the part in excavation of foundation pit face more than 202, lean on The reinforced beam 110 of the nearly side of steel plate 120 is not provided with vertical muscle 111, only sets vertical muscle 111 in the side away from steel plate 120, The consumption of reinforcing bar is so reduced, and does not reduce the mechanical property of reinforced beam 110.Excavation of foundation pit face is below 202 Reinforced beam 110 does not set steel plate 120, need to set vertical muscle 111, to improve the mechanical property of reinforced beam 110 Can, so as to ensure the resistance to overturning of underground exterior-protected structure.
Embodiment three
Refer to Fig. 9, the FB(flow block) of the construction method of the steel plate concrete prefabricated parts that Fig. 9 is provided for the present embodiment.Below The construction method of steel plate concrete prefabricated parts will be further described with reference to Fig. 1 to Fig. 6.
The construction method of steel plate concrete prefabricated parts 100, comprises the following steps:
S1:The vertical muscle 111 and stirrup 112 of assembling reinforcement beams of concrete 110, form framework of steel reinforcement.Wherein, muscle 111 is indulged Set-up mode is preferably, as shown in figure 1, vertical muscle 111 is located at same one end of framework of steel reinforcement, it is opposite with the place end of vertical muscle 111 The other end has steel plate 120 to be fixed.In addition, horizontal stroke of the set-up mode of vertical muscle 111 and stirrup 112 by reinforced beam 110 Form of fracture decision, when the cross section of reinforced beam 110 is T-shaped beam or I-beam, can refer to the mode in Fig. 2, Fig. 3 Vertical muscle 111 and stirrup 112 are set.
S2:On the basis of steel plate 120 with fore shaft 121 is lain against, the framework of steel reinforcement in step S1 is lain against into steel plate On 120, make vertical muscle 111 parallel with the fore shaft 121, steel plate 120 is welded with stirrup 112.Vertical muscle 111 on framework of steel reinforcement is simultaneously Non-homogeneous laying, when placing framework of steel reinforcement, makes the maximum one end of the vertical cross sectional area of muscle 111 upward, and make vertical muscle 111 and lock Mouth 121 is parallel.
S3:Install the side template of the both sides of reinforced beam 110 and the Side Template of termination.Wherein, steel plate 120 is the bottom of used as Template is fixedly connected with side template, Side Template.
S4:The casting concrete 113 in the space that steel plate 120, side template and Side Template are surrounded, treats the intensity of concrete 113 After reaching strength of mould stripping requirement, side template and Side Template are removed.
The construction method of the steel plate concrete prefabricated parts 100 that the present embodiment is provided has the advantages that:Steel plate 120 is straight Connect and weld together with stirrup 112, and using steel plate 120 as concrete 113 pour when template, and after concrete 113 is poured Stirrup 112 protective layer, rational in infrastructure, operation is simple, save material, and steel plate 120 and reinforced beam 110 is perfect It is fused to steel plate concrete prefabricated parts 100.Meanwhile, the termination of steel plate 120 is provided with fore shaft 121, is conducive to steel plate concrete prefabricated parts 100 splicing at the construction field (site).
Example IV
Refer to Figure 10, Figure 10 for the present embodiment provide forever-face the flow of the construction method for descending retaining design in combination Block diagram.Below in conjunction with Fig. 7 and Fig. 8 to forever-face and descend the construction method of retaining design to be further described in combination.
The present embodiment is disclosed forever-face the construction method for descending retaining design in combination, comprise the following steps:
S1:Prefabricated steel concrete prefabricated parts 100.The specific constructive form of steel plate concrete prefabricated parts 100 can refer to embodiment First, described in embodiment two, here is omitted.
S2:Mixing pile machine is set up, cement mixing method of constructing, cement mixing method mutually overlaps to form Soil-cement Wall 200.Mixing pile machine can use TRD (Trench cutting Re-mixing Deep wall method) equipment, or CSM (Cutter Soil Mixing) equipment.Soil-cement Wall can effectively prevent groundwater infiltration, while soil can also be increased Body intensity.
S3:1st steel plate concrete prefabricated parts 100 are inserted perpendicularly into Soil-cement Wall 200.In construction, need to set The locating rack of steel plate concrete prefabricated parts 100, it is ensured that perpendicularity.
S4:By the N+1 fore shaft of steel plate concrete prefabricated parts 100 121 and the fore shaft of n-th steel plate concrete prefabricated parts 100 121 are mutually fastened, and the N+1 steel plate concrete prefabricated parts 100 is inserted perpendicularly into Soil-cement Wall 200, wherein N >=1.
S5:Repeat step S4, until the steel plate wall 130 of the composition of steel plate 120 reaches design length.It should be noted that should Before the hardening of Soil-cement Wall 200, steel plate concrete prefabricated parts 100 are inserted perpendicularly into.
It is preferred embodiment also to include step S6 after step s 5:Carried out in the pitted surface side of meeting of steel plate wall 130 Excavation of foundation pit, steel plate wall 130 is connected with the horizontal support structure of the building in foundation ditch, and the underground for forming the foundation ditch is enclosed Protection structure.
If constructed using along the practice, in Excavation Process, horizontal support is acted directly on steel plate wall 130, Or steel plate wall 130 meet on pitted surface set steel enclose purlin or concrete collar tie beam, then by horizontal supports act on steel enclose purlin or On concrete collar tie beam;If using contrary sequence method, basement roof and base plate are directly acted on steel plate wall 130.
After excavation of foundation pit, at the fore shaft 121 of steel plate wall 130, further can prevent from oozing using welding or other measures Water, with reach forever-face the requirement for descending retaining design in combination in operation stage waterproof.Steel plate wall 130 meets pitted surface side, according to Need selection to increase concrete lining wall or only hang steel wire to paint, anti-corrosion and fireproof effect are played to steel plate 120.In It is that steel plate concrete prefabricated parts 100 are transformed into the permanent exterior wall of underground structure.
By construction method in the present embodiment build forever-face and descend retaining design to have the following advantages that in combination:(1) will Cement mixing method mutually overlaps to form Soil-cement Wall 200, increased the closely knit of the surrounding soil of steel plate concrete prefabricated parts 100 Degree, improve forever-face the stability of the water proofing property and structure of descending retaining design in combination;(2) forever-face and descend retaining design in combination Can be in foundation pit construction as earth-retaining and sealing effect is played, when underground engineering is runed, can be permanent as building Structure outer, perfection realizes the effect of two walls unification.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair Any change, modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims Scope.

Claims (11)

1. a kind of steel plate concrete prefabricated parts, it is characterised in that including reinforced beam and steel plate, the Interal fixation is arranged at On one side elevation of the reinforced beam, the width of the width more than the cross section of reinforced beam of the steel plate, institute Steel plate is stated with two ends being parallel to each other with the longitudinal axis of the reinforced beam, is set in the end of the steel plate It is equipped with fore shaft.
2. steel plate concrete prefabricated parts as claimed in claim 1, it is characterised in that the steel plate and the reinforced beam Position relationship is following one:
A1. the cross section of the reinforced beam is rectangle, and the steel plate is perpendicular to the side long of rectangular cross section;
A2. the cross section of the reinforced beam is T-shaped, the edge of a wing of the steel plate parallel to T-shaped cross section;
A3. the cross section of the reinforced beam is I-shaped, the edge of a wing of the steel plate parallel to I-shaped cross section.
3. steel plate concrete prefabricated parts as claimed in claim 2, it is characterised in that it is prefabricated that the steel plate is welded on the steel plate concrete On the stirrup of component.
4. one kind forever-face and descend retaining design in combination, it is characterised in that it is some as weighed in Soil-cement Wall including being arranged at Profit requires 1 to 3 any described steel plate concrete prefabricated parts, and the steel plate is spliced into steel plate wall, the coagulation by the fore shaft What Tu Liang was respectively positioned on the steel plate wall meets native face side.
5. it is as claimed in claim 4 forever-face and descend retaining design in combination, it is characterised in that the steel plate concrete prefabricated parts are full Sufficient condition:H1> > H2, wherein, H1It is the distance in the distance from bottom excavation of foundation pit face of the reinforced beam, H2It is the steel The distance in the distance from bottom excavation of foundation pit face of plate.
6. it is as claimed in claim 5 forever-face and descend retaining design in combination, it is characterised in that more than excavation of foundation pit face The cross section of the reinforced beam, the cross sectional area near the vertical muscle of the steel plate wall side is less than away from the steel plate The cross sectional area of the vertical muscle of wall side.
7. it is as claimed in claim 6 forever-face and descend retaining design in combination, it is characterised in that below excavation of foundation pit face The cross section of the reinforced beam, the cross sectional area near the vertical muscle of the steel plate wall side is equal to away from the steel plate The cross sectional area of the vertical muscle of wall side.
8. the construction method of a kind of steel plate concrete prefabricated parts as described in any one of claims 1 to 3, it is characterised in that including Following steps:
S1:The vertical muscle and stirrup of assembling reinforcement beams of concrete, form framework of steel reinforcement;
S2:On the basis of steel plate with fore shaft is lain against, the framework of steel reinforcement in step S1 is lain against on the steel plate, make institute State vertical muscle parallel with the fore shaft, the steel plate is welded with the stirrup;
S3:Install the side template of the both sides of the reinforced beam and the Side Template of termination;
S4:The casting concrete in the space that the steel plate, side template and Side Template are surrounded, treats that concrete strength reaches form removal strong After degree is required, the side template and Side Template are removed.
9. it is a kind of as described in any one of claim 4 to 7 forever-face the construction method for descending retaining design in combination, its feature exists In comprising the following steps:
S1:The prefabricated steel plate concrete prefabricated parts;
S2:Mixing pile machine is set up, cement mixing method of constructing, cement mixing method mutually overlaps to form Soil-cement Wall;
S3:The 1st steel plate concrete prefabricated parts are inserted perpendicularly into the Soil-cement Wall;
S4:The fore shaft of the N+1 steel plate concrete prefabricated parts is mutually detained with the fore shaft of steel plate concrete prefabricated parts described in n-th Close, and the N+1 steel plate concrete prefabricated parts are inserted perpendicularly into the Soil-cement Wall, wherein N >=1;
S5:Repeat step S4, until the steel plate wall of steel plate composition reaches design length.
10. it is as claimed in claim 9 forever-face the construction method for descending retaining design in combination, it is characterised in that step S5 it Also include step S6 afterwards:The steel plate wall is connected with the horizontal support structure in foundation ditch, the underground for forming the foundation ditch is enclosed Protection structure.
11. it is as claimed in claim 10 forever-face the construction method for descending retaining design in combination, it is characterised in that treat the steel The pitted surface side Underground Construction of meeting of board wall is completed, and the steel plate of underground exterior-protected structure system is welded at fore shaft Integrally, and the anticorrosive construction of the steel plate wall is completed, so as to form the permanent structural protective system of underground engineering operation stage.
CN201611258247.9A 2016-12-30 2016-12-30 Steel plate concrete prefabricated part, permanent-temporary combined underground enclosure system and construction methods Pending CN106703015A (en)

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CN201611258247.9A CN106703015A (en) 2016-12-30 2016-12-30 Steel plate concrete prefabricated part, permanent-temporary combined underground enclosure system and construction methods

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Application Number Priority Date Filing Date Title
CN201611258247.9A CN106703015A (en) 2016-12-30 2016-12-30 Steel plate concrete prefabricated part, permanent-temporary combined underground enclosure system and construction methods

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CN106703015A true CN106703015A (en) 2017-05-24

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CN109339060A (en) * 2018-11-07 2019-02-15 上海市基础工程集团有限公司 For the rectangle steel case and construction method in equal thickness Soil-cement Wall

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