CN102061705A - Timbering wall of built-in prestressed reinforced concrete rectangular pile and construction method thereof - Google Patents
Timbering wall of built-in prestressed reinforced concrete rectangular pile and construction method thereof Download PDFInfo
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- CN102061705A CN102061705A CN 201110004460 CN201110004460A CN102061705A CN 102061705 A CN102061705 A CN 102061705A CN 201110004460 CN201110004460 CN 201110004460 CN 201110004460 A CN201110004460 A CN 201110004460A CN 102061705 A CN102061705 A CN 102061705A
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Abstract
The invention discloses a timbering wall of a built-in prestressed reinforced concrete rectangular pile, which comprises a waterproof body made of common waterproof material, and prestressed reinforced concrete rectangular piles are continuously inserted in the waterproof body or inserted in the waterproof body at intervals and are solidified with the waterproof body. The construction method comprises the following steps of: 1. prefabricating the prestressed reinforced concrete rectangular piles; 2. manufacturing the waterproof body; 3. before the waterproof body is hardened, inserting the prestressed reinforced concrete rectangular piles into stirred waterproof material with a continuously arranged structure that one prestressed reinforced concrete rectangular pile is inserted in each waterproof body pile hole, or with a discontinuously arranged structure that one prestressed reinforced concrete rectangular pile is inserted in every other waterproof body pile hole; and 4. after solidification, solidifying into an integral timbering wall by the prestressed reinforced concrete rectangular piles and the waterproof body. The timbering wall has the advantages of low environmental pollution, low manufacture cost, good horizontal bearing performance, high timbering rigidity, short construction period, convenience of construction and the like.
Description
Technical field:
The present invention relates to the supporting and protection structure and the job practices thereof of the building foundation pit in the civil construction field.
Background technology:
Campshed supporting and protection structure is support form the most commonly used in the existing deep foundation pit support technology, the job practices of widespread usage is to adopt bored pile to form soil-baffling structure, again at the only water-stopping structure of outside work order, water-stopping structure adopts Deep Mixing Piles Construction usually, and material water-proof material adopts cement, swell soil, flyash to mix and stir with earth usually and forms.The campshed supporting and protection structure cost that this mode forms is generally higher, and the construction period is long, and environment pollution is heavy, is difficult to adapt to construction work to requirements of green environmental protection.
Summary of the invention:
The object of the invention is to provide that a kind of environment pollution is little, low cost of manufacture, the horizontal bearing performance is good, support rigidity big, the support wall and the job practices thereof of short construction period and built-in easily prestressed reinforced concrete rectangular stake.
Technical scheme: the support wall of built-in prestressed reinforced concrete rectangular stake, contain the body that blocks water that conventional material water-proof material is made, the prestressed reinforced concrete rectangular stake is inserted in the body that blocks water, and is solidified as one with the body that blocks water.The effect of the active force of carrying foundation ditch side body of wall is mainly played in the prestressed reinforced concrete rectangular stake, the characteristic that rigidity of section is big, horizontal bearing capacity is high, non-deformability is strong because the prestressed reinforced concrete rectangular stake has, the supporting distortion is little makes its anti-bending strength of bearing the side direction active force obviously be better than the soil-baffling structure that adopts on-the-spot bored pile to form.
In the body that blocks water, the discharge structure of prestressed reinforced concrete rectangular stake is inserted the continous way discharge structure of a prestressed reinforced concrete rectangular stake for the body stake Kong Zhongjun that blocks water at each, or for inserting the clearance-type discharge structure of a prestressed reinforced concrete rectangular stake every the body stake hole that blocks water.
The prestressed reinforced concrete rectangular stake is the prestressed reinforced concrete cuboid support pile, contain reinforcing cage, concrete, pile body is cuboid, cuboid pile body two ends are provided with the rectangle metal end plate that is connected with reinforcing cage, pile body central authorities are manhole, and the stirrup of reinforcing cage shape in the shape of a spiral is welded on through on autofrettage pre-stressed longitudinal reinforced.Adopt the prestressed reinforced concrete cuboid support pile, improved strength of the mixing pile, the minor face of pile body bears foundation ditch side and side direction active force, and the long limit of pile body makes the side direction bending resistance moment of pile body increase, and anti-bending strength is better, and the side direction supporting capacity is bigger.Increased the anti-bending strength of reinforced concrete hollow cuboid stake, born under the situation of same resistance to bending, reduced the pre-stressed longitudinal reinforced quantity in the pile body, what adopt is hollow pile in addition, has not only saved steel but also saved concrete.
The minor face of pile body is 0.55-0.8 with the ratio on long limit.The minor face of pile body and the ratio on long limit will be taken all factors into consideration the structure situation of laying density, soil layer of the depth, stake of foundation ditch to the influence of pile body, and definite by concrete calculatings back, optimum value is chosen as 0.6-0.7.
According to the loading characteristic of soldier pile, pre-stressed longitudinal reinforced arranging in the soldier pile optimized, reduced pre-stressed longitudinal reinforced usage quantity.Because, what the side that the soldier pile minor face contacts with the foundation ditch side was born is stretching resistance, what the minor face of opposite side then bore is compressive resistance, and the power of bearing as the dual-side on long limit is less relatively, the length of side on long limit is long more, the anti-bending strength of soldier pile is good more, so, pre-stressed longitudinal reinforced being set to of the reinforcing cage in the cuboid pile body: the pre-stressed longitudinal reinforced of two minor faces is symmetrical arranged, also the pre-stressed longitudinal reinforced of two minor faces can be set to: a side minor face that contacts with the foundation ditch side is pre-stressed longitudinal reinforced many, bear the horizontal loading that soil excavation causes, the vertical muscle of another minor face is few, with the still less pre-stressed longitudinal reinforced or cancellation on two long limits.The tension bearing capacity of prestressed reinforcement is not fully exerted, and the pre-stressed longitudinal reinforced use amount of reinforcing cage is significantly reduced, and has saved steel, has reduced cost of production, has avoided unnecessary waste.
The job practices of the support wall of built-in prestressed reinforced concrete rectangular stake, contain following steps:
1, precast prestressed reinforced concrete rectangular stake; Or the stake of precast prestressed concrete cuboid, the long limit of cuboid stake is vertical with the side of building foundation pit, can give full play to the high characteristics of its horizontal bearing capacity.
2, adopt single shaft, twin shaft or three deep mixers that the soil body is holed, stirred, will mix with earth as cement, swell soil, the flyash of material water-proof material and stir, form the body that blocks water.
3, before the body scleroma that blocks water, body stake Kong Zhongjun inserts the continous way discharge structure of precast prestressed concrete rectangle stake by blocking water at each, or, the stake of precast prestressed concrete rectangle is inserted in the material water-proof material of stirring in the method for inserting the clearance-type discharge structure of precast prestressed concrete rectangle stake every the body stake hole that blocks water;
4, around the stake of precast prestressed concrete rectangle and in the manhole of pile body central authorities all by the material water-proof material filling, form the support wall that prestressed reinforced concrete rectangular stake and the body that blocks water are solidified as one.
Adopt the present invention, solved the problem that traditional support wall and supporting method exist well, given full play to the retaining soil of the support wall of band prestressed concrete rectangle stake, the advantage that blocks water and unite two into one, it is little to take the construction plant, economical rationality.The stake of prestressed concrete rectangle is directly prefabricated by plant produced, compares with traditional bored pile, has following advantage: (1) uniform specification, standard, and reliable in quality is compared with present walling pile, and pile quality is more reliable.(2) speed of application is fast.The prestressed concrete pile speed of application is fast.(3) economic security.Because prestressed concrete pile adopts high tensile reinforcement, is the economical with materials cost under the high-grade concrete, equal conditions, improves anti-bending strength simultaneously.(4) noiselessness, pollution-free, the construction environmental protection.Compare with present walling pile, prestressed concrete pile construction noiselessness, do not produce mud, pollute little surrounding enviroment.
Description of drawings:
Fig. 1 inserts the continous way discharge structure schematic diagram of a precast prestressed concrete cuboid support pile by the body stake Kong Zhongjun that blocks water at each for the present invention;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is at the clearance-type discharge structure schematic diagram of inserting a precast prestressed concrete square soldier pile every the body stake hole that blocks water;
Fig. 4 is that the B of Fig. 3 is to view.
Among the figure: the 1-body that blocks water; 2-precast prestressed concrete cuboid support pile; The 3-manhole; 4-is pre-stressed longitudinal reinforced; 5-precast prestressed concrete square soldier pile.
The specific embodiment:
Embodiment 1: the support wall of built-in prestressed reinforced concrete cuboid support pile 2, contain the body 1 that blocks water that conventional material water-proof material is made, and prestressed reinforced concrete cuboid support pile 2 is inserted in the body 1 that blocks water, and is solidified as one with the body 1 that blocks water.Prestressed reinforced concrete cuboid support pile 2 mainly plays the effect of the active force of carrying foundation ditch side body of wall, in the body 1 that blocks water, the discharge structure of prestressed reinforced concrete cuboid support pile 2 is inserted the continous way discharge structure of a prestressed reinforced concrete cuboid support pile 2 for the body stake Kong Zhongjun that blocks water at each.Prestressed reinforced concrete cuboid support pile 2 contains reinforcing cage, concrete, pile body is cuboid, the pile body two ends of cuboid are provided with the rectangle metal end plate that is connected with reinforcing cage, pile body central authorities are manhole 3, the stirrup of reinforcing cage in the shape of a spiral shape be welded on through autofrettage pre-stressed longitudinal reinforced 4 on.Pre-stressed longitudinal reinforced being set to of the reinforcing cage in the pile body: it is 4 that a side minor face that contacts with the foundation ditch side has pre-stressed longitudinal reinforced, bears the horizontal loading that soil excavation causes, it is 3 that another minor face has pre-stressed longitudinal reinforced, and two long the pre-stressed longitudinal reinforced of limit are 1.
The job practices of built-in prestressed reinforced concrete cuboid support wall, contain following steps:
1, precast prestressed steel concrete cuboid support pile 2, the long limit of pile body is vertical with the side of building foundation pit, can give full play to the high characteristics of its horizontal bearing capacity.
2, adopt single shaft, twin shaft or three deep mixers that the soil body is holed, stirred, will mix with earth as cement, swell soil, the flyash of material water-proof material and stir, form the body 1 that blocks water.
3, before body 1 scleroma that blocks water,, precast prestressed concrete cuboid support pile 2 is inserted in the material water-proof material of stirring by the method that the body stake Kong Zhongjun that blocks water at each inserts the continous way discharge structure of a precast prestressed concrete cuboid support pile 2;
4, around the prestressed concrete cuboid support pile 2 and in the manhole 3 of pile body central authorities all by the material water-proof material filling, form the support wall that prestressed reinforced concrete cuboid support pile 2 and the body 1 that blocks water are solidified as one.
Excavation of foundation pit degree of depth 11m, the sectional dimension of cuboid support pile is 450 * 600mm, and the diameter of manhole 3 is 250mm, and pile body adopts C80 concrete, the long 22m of pile body.
Embodiment 2: the support wall of built-in prestressed reinforced concrete square soldier pile 5, contain the body 1 that blocks water that conventional material water-proof material is made, and prestressed reinforced concrete square soldier pile 5 is inserted in the body 1 that blocks water, and is solidified as one with the body 1 that blocks water.The effect of the active force of carrying foundation ditch side body of wall is mainly played in prestressed reinforced concrete square stake 5, in the body 1 that blocks water, the discharge structure of prestressed reinforced concrete square stake 5 is for inserting the clearance-type discharge structure of prestressed reinforced concrete square stake 5 every the body stake hole that blocks water.Prestressed reinforced concrete square soldier pile 5 contains reinforcing cage, concrete, pile body is square, the pile body two ends of square are provided with the square-shaped metal end plate that is connected with reinforcing cage, pile body central authorities are manhole 3, the stirrup of reinforcing cage in the shape of a spiral shape be welded on through autofrettage pre-stressed longitudinal reinforced 4 on.
The job practices of built-in prestressed reinforced concrete square support wall 5, contain following steps:
1, precast prestressed steel concrete square soldier pile 5, the symmetrical centre face of pile body is vertical with the side of building foundation pit.
2, adopt single shaft, twin shaft or three deep mixers that the soil body is holed, stirred, will mix with earth as cement, swell soil, the flyash of material water-proof material and stir, form the body 1 that blocks water.
3, before body 1 scleroma that blocks water,, precast prestressed concrete square soldier pile 5 is inserted in the material water-proof material of stirring by in the method for inserting the clearance-type discharge structure of prestressed reinforced concrete square stake 5 every the body stake hole that blocks water;
4, around the prestressed concrete square soldier pile 5 and in the manhole 3 of pile body central authorities all by the material water-proof material filling, form the support wall that prestressed reinforced concrete square soldier pile 5 and the body 1 that blocks water are solidified as one.
Claims (6)
1. the support wall of built-in prestressed reinforced concrete rectangular stake contains the body that blocks water that conventional material water-proof material is made, and it is characterized in that the prestressed reinforced concrete rectangular stake is inserted in the body that blocks water, and is solidified as one with the body that blocks water.
2. the support wall of built-in prestressed reinforced concrete rectangular stake according to claim 1, it is characterized in that in the body that blocks water, the discharge structure of prestressed reinforced concrete rectangular stake is inserted the continous way discharge structure of a prestressed reinforced concrete rectangular stake for the body stake Kong Zhongjun that blocks water at each, or for inserting the clearance-type discharge structure of a prestressed reinforced concrete rectangular stake every the body stake hole that blocks water.
3. the support wall of built-in prestressed reinforced concrete rectangular stake according to claim 2, it is characterized in that the prestressed reinforced concrete rectangular stake is the prestressed reinforced concrete cuboid support pile, contain reinforcing cage, concrete, pile body is cuboid, cuboid pile body two ends are provided with the rectangle metal end plate that is connected with reinforcing cage, pile body central authorities are manhole, and the stirrup of reinforcing cage shape in the shape of a spiral is welded on through on autofrettage pre-stressed longitudinal reinforced.
4. the support wall of built-in prestressed reinforced concrete rectangular stake according to claim 3 is characterized in that the minor face of pile body and the ratio of growing the limit are 0.55-0.8.
5. the support wall of built-in prestressed reinforced concrete rectangular stake according to claim 4 is characterized in that the minor face of pile body and the ratio optimum value of growing the limit are chosen as 0.6-0.7.
6. the job practices of the support wall of built-in prestressed reinforced concrete rectangular stake, contain following steps:
(1) precast prestressed reinforced concrete rectangular stake; Or the stake of precast prestressed concrete cuboid, the long limit of cuboid stake is vertical with the side of building foundation pit, can give full play to the high characteristics of its horizontal bearing capacity.
(2) adopt single shaft, twin shaft or three deep mixers that the soil body is holed, stirred, will mix with earth as cement, swell soil, the flyash of material water-proof material and stir, form the body that blocks water.
(3) before the body scleroma that blocks water, body stake Kong Zhongjun inserts the continous way discharge structure of precast prestressed concrete rectangle stake by blocking water at each, or, the stake of precast prestressed concrete rectangle is inserted in the material water-proof material of stirring in the method for inserting the clearance-type discharge structure of precast prestressed concrete rectangle stake every the body stake hole that blocks water;
(4) around the stake of precast prestressed concrete rectangle and in the manhole of pile body central authorities all by the material water-proof material filling, form the support wall that prestressed reinforced concrete rectangular stake and the body that blocks water are solidified as one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100044608A CN102061705B (en) | 2011-01-11 | 2011-01-11 | Timbering wall of built-in prestressed reinforced concrete rectangular pile and construction method thereof |
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| CN2011100044608A CN102061705B (en) | 2011-01-11 | 2011-01-11 | Timbering wall of built-in prestressed reinforced concrete rectangular pile and construction method thereof |
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| CN102061705A true CN102061705A (en) | 2011-05-18 |
| CN102061705B CN102061705B (en) | 2011-10-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660957A (en) * | 2012-05-31 | 2012-09-12 | 中国二十二冶集团有限公司 | Foundation pit supporting construction method for soft soil zone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215153A1 (en) * | 1982-04-23 | 1983-11-03 | Beratende Ingenieure VBI Frank-Kauer-Raffelt GmbH, 8012 Ottobrunn | Retaining structure and method of producing a retaining structure |
| JP2008150947A (en) * | 2003-02-05 | 2008-07-03 | Ohbayashi Corp | Wall structure in which permanent anchor is executed, and construction method of wall structure in which permanent anchor is executed |
| CN101666085A (en) * | 2009-09-17 | 2010-03-10 | 上海建工（集团）总公司 | Prefabricated part composite cement soil wall and construction method thereof |
| CN101806060A (en) * | 2010-04-01 | 2010-08-18 | 凌德祥 | Prestressed cuboid support pile for building foundation pit, manufacturing method thereof and forming die |
-
2011
- 2011-01-11 CN CN2011100044608A patent/CN102061705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215153A1 (en) * | 1982-04-23 | 1983-11-03 | Beratende Ingenieure VBI Frank-Kauer-Raffelt GmbH, 8012 Ottobrunn | Retaining structure and method of producing a retaining structure |
| JP2008150947A (en) * | 2003-02-05 | 2008-07-03 | Ohbayashi Corp | Wall structure in which permanent anchor is executed, and construction method of wall structure in which permanent anchor is executed |
| CN101666085A (en) * | 2009-09-17 | 2010-03-10 | 上海建工（集团）总公司 | Prefabricated part composite cement soil wall and construction method thereof |
| CN101806060A (en) * | 2010-04-01 | 2010-08-18 | 凌德祥 | Prestressed cuboid support pile for building foundation pit, manufacturing method thereof and forming die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660957A (en) * | 2012-05-31 | 2012-09-12 | 中国二十二冶集团有限公司 | Foundation pit supporting construction method for soft soil zone |
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| CN102061705B (en) | 2011-10-05 |
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Inventor after: Shao Shumin Inventor after: Ling Dexiang Inventor before: Ling Dexiang |
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Free format text: CORRECT: INVENTOR; FROM: LING DEXIANG TO: SHAO SHUMIN LING DEXIANG |