阅读说明：本技术 深槽式水泥搅拌土植入预制钢筋砼桩围护墙施工方法 (Wall construction method is gone along with sb. to guard him in the implantation prefabricated reinforced concrete stake of deep slot type soil-cement ) 是由 严平 于 2018-05-23 设计创作，主要内容包括：本发明涉及一种无泥浆外运污染环境问题产生,且适用于各种软硬土层,如老硬黏土层、砂砾石层、风化残积粘土层、全风化岩层的大深度开挖围护工程的抗渗围护墙施工方法一深槽式水泥搅拌土内植预制钢筋混凝土桩围护墙施工方法,该围护墙施工方法相比于传统的围护墙施工方法,具有施工速度快、环境污染小的优点。(The present invention relates to a kind of no mud outward transport environmental pollution problems to generate, and it is suitable for various soft or hard soil layers, as the impervious of big depth excavating engineering of old stiff clay layer, sand gravel layer, baliki layer, fully weathered rock stratum goes along with sb. to guard him one deep slot type soil-cement interplantation precast reinforced concrete pile of wall construction method and go along with sb. to guard him wall construction method, this is gone along with sb. to guard him wall construction method and goes along with sb. to guard him wall construction method compared to traditional, has the advantages that speed of application is fast, environmental pollution is small.)

1. wall construction method is gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake, it is characterized in that: first using deep trouth Formula blender carries out injection cement slurry stirring to the soil body, is then stirred reaming again simultaneously to non-condensing soil cement with multiple-rotor mixer It is implanted into precast reinforced concrete pile, the enclosure wall of design requirement is formed, plays the impervious Support Function of sealing earth-retaining.

2. wall construction method is gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake, it is characterized in that: first with special slot Formula stirs machine deeply and soil layer cement injection is stirred into equal thickness cement soil wall, and multifunctional triaxial blender immediately after carries out in slot Not reaming is stirred again, is then implanted into precast reinforced concrete pile and is formed enclosure wall.

3. according to claim 2, wall construction method, feature are gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake It is: is the 15-30% of soil body weight, swelling according to various soils its cement slurry cement additive ratios when slot type stirs machine stirring operation deeply The blend ratio of soil is 0-10%, three axis stirring blade diameters of three axis blenders it is identical and with agitated trough consistency of thickness, it is multiple It stirs cement slurry cement additive ratio view and plants stake density value between 0-10%, bentonitic blend ratio is 0-5%, big depending on soil layer particle Depending on small and plant stake difficulty or ease.

4. according to claim 2, wall construction method, feature are gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake Be: slot type stirs the thickness of cement soil wall in 600-1100mm deeply, is implanted into the depth of section of precast reinforced concrete pile in 500- Between 1000mm, the thickness of cement soil wall is 100mm bigger than the stake depth of section of use；Design requirement is pressed in precast reinforced concrete pile Stake spacing implantation Soil-cement Wall in.

5. the sealing earth-retaining for being implanted with precast reinforced concrete pile formation in a kind of soil cement is impervious to go along with sb. to guard him wall construction method, feature Be: first stirring machine deeply with special slot type stirs into equal thickness cement soil wall for soil layer cement injection, multifunctional triaxial immediately after Blender carries out bilateral reaming in slot at plant stake and stirs again, is then implanted into large-sized precast reinforced concrete pile formation and goes along with sb. to guard him Wall.

6. according to claim 5, wall construction method, feature are gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake Be: slot type stirs the thickness of cement soil wall between 400-1000mm deeply, and three axis stirring blades of multifunctional triaxial blender are straight Diameter is not identical, and for jackshaft blade diameter between 700-1300mm, two side axis blade diameters stir the thickness of cement soil wall with slot type deeply Degree is consistent, plays the role of positioning reaming；The circular arc fan-shaped soil cement of two-sided evagination will entirely be implanted into prefabricated pile outsourcing.It is double in slot Side reaming is implanted into the depth of section of precast reinforced concrete pile between 700-1200mm after stirring again.Precast reinforced concrete pile is pressed In the stake spacing implantation Soil-cement Wall of design requirement.

7. according to claim 5, wall construction method, feature are gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake It is: is the 15-30% of soil body weight, swelling according to various soils its cement slurry cement additive ratios when slot type stirs machine stirring operation deeply The blend ratio of soil is 0-10%, and three axis blenders stir cement slurry cement additive ratio view again and plant stake density value between 5-15%, swollen The blend ratio of profit soil is 0-10%, depending on depending on soil layer granular size and planting stake difficulty or ease.

8. the earth-retaining water sealing and seepage resistane for being implanted with precast reinforced concrete pile formation in a kind of soil cement goes along with sb. to guard him wall construction method, feature It is: first stirs machine deeply with special slot type and soil layer cement injection is stirred into equal thickness cement soil wall, multi-functional product shape immediately after Four-axis blender carries out unilateral reaming in slot at plant stake and stirs again, is then implanted into large-sized precast reinforced concrete pile formation and encloses Revetment.

9. according to claim 8, wall construction method, feature are gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake Be: slot type stirs the thickness of cement soil wall between 400-1000mm deeply, three axis paddles of multi-functional product shape four-axis blender Piece diameter is identical and stirs the consistency of thickness of cement soil wall deeply with slot type, plays the role of reaming positioning, and intermediate outer protruding shaft blade is straight Diameter all wraps up evagination prefabricated pile between 400-600mm；Unilateral reaming is implanted into precast reinforced concrete pile after stirring again in slot Depth of section between 700-1200mm；Precast reinforced concrete pile is implanted into Soil-cement Wall by the stake spacing of design requirement In.

10. according to claim 8, wall construction method is gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake, special Sign is: it is the 15-30% of soil body weight according to various soils its cement slurry cement additive ratios when slot type stirs machine stirring operation deeply, it is swollen The blend ratio of profit soil is 0-10%, and three axis blenders stir cement slurry cement additive ratio view again and plant stake density value between 5-15%, Bentonitic blend ratio is 0-10%, depending on depending on soil layer granular size and planting stake difficulty or ease.

11. wall construction method is gone along with sb. to guard him in a kind of deep slot type soil-cement implantation prefabricated reinforced concrete stake, it is characterized in that: implantation is prefabricated Reinforced concrete pile section can be I-shaped, empty stomach diamond shape and empty stomach rectangle.

Technical field

The present invention relates to a kind of no mud outward transport environmental pollution problems to generate, and is suitable for various soft or hard soil layers, such as old hard The impervious enclosure wall of the big depth excavating engineering of clay layer, sand gravel layer, baliki layer, fully weathered rock stratum is constructed Wall construction method is gone along with sb. to guard him in method-deep slot type soil-cement interplantation precast reinforced concrete pile.

Technical background

With city underground, underground pipe gallery, underground express passway, underground garage, market place builet below the ground, underground storage etc. Construction will become the emphasis of urban construction to underground development, this will make excavation of foundation pit depth deeper and deeper, and range is also increasingly Extensively, the strata condition of various complexity will also be run into.Currently used for deep basal pit to go along with sb. to guard him wall technology very limited, mainly occlusion is bored Hole piling wall, drilling major diameter campshed wall, Diaphragm Wall.But not only construction cost is high for these technologies, and speed of application is slow, and And all there are problems that mud outward transport pollutes environment.Further, since excavation of foundation pit depth is deeper and deeper, sand gravel can be often encountered Layer, hard clay stratum, fully weathered rock stratum etc., common three axes agitating pile can not construct, so researching and developing a kind of low cost, construction speed Degree is fast, reliable in quality and without mud outward transport problem newly to go along with sb. to guard him wall construction method imperative.

Summary of the invention

The invention proposes a kind of construction methods for enclosure wall in deep foundation pit excavation project.This construction method utilizes The Japanese canal formula cutting depth blender TRD or Bao E company, Germany Double-wheel milling depth stirring concrete earth stock tank of newest introduction, through special Machinery stirs reaming implantation precast reinforced concrete pile again and is formed, and is suitable for various hard viscosity layers, sand gravel layer, residual soil and weathering Rock stratum.Being formed by enclosure wall has the impervious function of flowing and bear lateral Water And Earth Pressures in excavation of foundation pit.

Detailed description of the invention

With reference to the accompanying drawing and embodiment the present invention will be described.

Fig. 1 a, Fig. 1 b, Fig. 1 c are that deep slot type cement soil wall 1 is implanted into precast reinforced I-shaped cross-section stake 5, empty stomach water chestnut respectively The enclosure wall that shape stake 6 and empty stomach rectangular pile 7 are formed；Fig. 1 d is that three axis stir the signal of machine stirring blade diameter again.Stake 2 (including 5,6, 7) depth of section is less than the thickness of deep slot type cement soil wall 1, and stake spacing can be adjusted according to engineering practice.It is wherein prefabricated The depth of section of stake 2 is between 500-1000mm, and the thickness of cement soil wall 1 is between 600-1100mm, than 2 section of stake of implantation Highly big 100mm.

Fig. 2 a, Fig. 2 b, Fig. 2 c are that precast reinforced I-shaped cross-section stake 5, empty stomach diamond shape stake are implanted in deep slot type cement soil wall 1 6 and 7 enclosure wall of empty stomach rectangular pile；Fig. 2 d is that three axis stir the signal of machine stirring blade diameter again.2 depth of sections of stake are greater than deep slot type water The thickness of soil wall 1.There is the circular arc fan-shaped soil cement 3 of two-sided evagination by entire 2 outsourcing of prefabricated pile, intermediate reaming axis leaf outside every For piece diameter between 700-1300mm, two side axis blade diameters stir the consistency of thickness of cement soil wall with slot type deeply, play positioning and expand Hole effect.The arrangement spacing of prefabricated pile 2 can be adjusted.The depth of section of prefabricated pile is between 700-1200mm, deep slot type water 1 thickness of soil wall is between 400-1000mm, the bilateral circumscribed prefabricated pile 2 of 3 arc diameter of evagination soil cement.

Fig. 3 a, Fig. 3 b, Fig. 3 c are the I-shaped stake 5 of 1 interplantation of deep slot type cement soil wall, empty stomach diamond shape stake 6 and empty stomach rectangular pile 7 The enclosure wall of formation；Fig. 3 d is that four axis of product shape stirs the distribution of machine stirring blade again and diameter signal, four axis of product shape stir machine mixing pile again Unilateral evagination goes out cement mixing pile 4, and every prefabricated pile is fully wrapped around by the circular arc fan-shaped soil cement 4 of unilateral outer protrusion, the row of stake Column pitch is adjustable；Between the thickness 400-1000mm of deep slot type cement soil wall 1, unilateral 4 diameter of evagination circular arc fan-shaped soil cement Between 400-600mm, all stake 2 is wrapped up.

Attached drawing 4a, 4b, 4c are prefabricated I-shaped stake 5, Prefabricated hollow diamond shape stake 6 (including two kinds of section forms) and pre- respectively The section of empty stomach rectangular pile 7 (including four kinds of section forms) processed and arrangement of reinforcement schematic diagram.

Wherein:

Wherein:

1- deep slot type cement mixing cob wall；

2- precast reinforced concrete pile (including 5,6,7)；

The arc-shaped soil-cement body of the bilateral reaming of 3-；

The unilateral outer convex arch soil-cement body of 4-；

The I-shaped stake of 5- prefabricated reinforced concrete；

6- prefabricated reinforced concrete diamond shape stake；

7- prefabricated reinforced concrete empty stomach rectangular pile；

8- prefabricated reinforced concrete stake lengthways main steel bar；

9- prefabricated reinforced concrete pile ring muscle；

Specific embodiment

Prefabricated the cement earthwork is mixed according to different cutting depths, sub-surface distribution situation, level of ground water situation, implantation Method, reaming and stir again method and implantation precast reinforced concrete pile method, form following retaining wall construction method.