Construction method of soft foundation pit supporting and wall formwork

Abstract

The application discloses a construction method of a soft foundation pit support and wall formwork. The method comprises the following steps: using cement mixing piles as the foundation pit support and wall outer formwork, constructing a shotcrete layer on the cement mixing piles, using the shotcrete layer as the outer wall formwork, drilling a rebar hole on the shotcrete layer, fixing an inner formwork through a full-thread water stop screw, pouring concrete in the inner formwork, and finally completing the wall construction of the underground space.

Description

TECHNICAL FIELD

[0001] The present application relates to underground space construction technology, in particular to a soft foundation pit supporting and wall formwork construction method. BACKGROUND

[0002] Some soft foundation pit conditions have limited basement peripheral space, and the cement mixing pile supporting is completed without the operation space of the outside formwork construction. The traditional method of supporting both sides of the formwork construction is difficult to implement, and the safety hidden danger of small space operation is also large. In order to solve this problem, from the safety management and quality management, the method of soft foundation pit supporting and wall outside formwork is adopted. SUMMARY

[0003] In order to solve the above technical problems, the inventors have summarized the technical scheme of the present application through practice, and the present application adopts the following technical scheme:

[0004] A soft foundation pit supporting and wall formwork construction method, comprising the following steps:

[0005] Step one, positioning and setting out, completing the cement mixing pile according to the supporting design construction drawing;

[0006] Step two, excavating the foundation pit soil to the foundation cushion bottom, cleaning the floating soil on the cement mixing pile, and retaining the soil between the triangular area piles without cleaning;

[0007] Step three, implanting φ6 steel short rod on the cement mixing pile, hanging steel mesh and spraying, the spraying thickness is 100mm, and the surface flatness is controlled;

[0008] Step four, after the spraying reaches the strength, pouring the foundation cushion, drilling the steel bar hole along the center line of the cement mixing pile according to the bidirectional @500mm, the hole diameter is φ14, the hole depth is 200mm, and the first steel bar hole at the bottom is located at the height of the cushion layer + the thickness of the bottom plate + 250mm;

[0009] Step five, implanting the full-silk water stop screw by using the steel bar glue, the length of the full-silk water stop screw is 450mm + the wall thickness, the water stop piece is arranged at the position of 1 / 2 wall thickness, and the wall thickness adopts plastic interface limiting;

[0010] Step six, after installing the wall horizontal construction joint according to the design requirements of the construction drawing, implanting the φ22 steel short rod with a length of 200mm at the position of 2m from the sprayed layer, anchoring into the bottom plate concrete by 100mm, and staggering the position by 250mm from the position of the full-silk water stop screw;

[0011] Step seven, after the upper turning part of the bottom plate concrete has the condition of removing the formwork, removing the formwork of the upper turning part of the bottom plate, and sticking 20mm wide double-sided adhesive tape on the edge of the upper turning wall part;

[0012] Step eight, the upper wall formwork is successively penetrated into the full-thread water stop screw rod, the bottom formwork is hung downward, the bolt on the full-thread water stop screw rod in the concrete upturned part of the bottom plate is reserved and reinforced to avoid cement paste leakage during pouring; the formwork is reinforced from the outside by using a "3" shaped card and back lath;

[0013] Step nine, a steering buckle is sleeved on the exposed head of the φ22 steel short rod, a short steel pipe is inserted into the fine adjustment bolt in front of the short steel pipe to top the upper formwork horizontal steel pipe back lath;

[0014] Step ten, pouring the wall concrete.

[0015] Preferably, the bottom plate and the bottom plate upturned part formwork construction steps in step five are further included, and the specific steps are as follows:

[0016] First, the suspension piece is screwed into the at least second hole of the bottom hole, the end of the suspension piece is provided with a connecting lug and a telescopic rod piece is installed through the connecting lug, the telescopic rod piece is a sleeve in the middle and movable rods installed at both ends of the sleeve and partially located in the sleeve, the ends of the two movable rods inside the sleeve are provided with sliding plates, a spring structure piece is installed between the two sliding plates, a length adjustment structure is provided on one of the movable rods, the telescopic rod piece is obliquely downward, and a connecting plate is hingedly installed at the bottom end, the connecting plate is fixed to the bottom plate formwork, and a lifting eye is installed on the top of the bottom plate formwork;

[0017] Secondly, the length adjustment structure is adjusted to ensure that the elevation and levelness of the bottom plate formwork meet the thickness and levelness requirements of the bottom plate in the construction drawing design;

[0018] Thirdly, the full-thread water stop screw rod is installed in the first hole of the bottom, and the bottom upturned part formwork is reinforced on the bottom plate formwork from the outside by using a "3" shaped card and back lath, and a sealing assembly is installed at the joint of the bottom plate formwork and the bottom upturned part formwork;

[0019] Finally, after the bottom plate formwork and the bottom upturned part formwork are installed, the concrete of the bottom plate and the bottom upturned part is poured.

[0020] Preferably, the sealing assembly comprises a foot plate, both ends of the foot plate are respectively a vertical plate and a horizontal plate, and the foot plate is installed on the bottom plate formwork and the bottom upturned part formwork through a bolt, a pressing plate is movably installed on the foot plate, a guide rod is provided on the pressing plate, the guide rod freely penetrates through the foot plate, a press screw is further installed on the foot plate, the press screw is used to extrude the pressing plate to move towards the joint of the bottom plate formwork and the bottom upturned part formwork, both ends of the pressing plate are provided with connecting rods, a spring body is provided between the connecting rod and the pressing plate, a free end of the connecting rod is provided with a pressing block, one of the pressing blocks is slidably installed on the vertical plate and the other is slidably installed on the horizontal plate, and a sponge body is installed between the pressing blocks;

[0021] By adjusting the pressing screw rod, the extrusion pressing plate moves towards the joint between the bottom plate template and the bottom plate upward template, the pressing plate drives the extrusion block to move relative to the vertical plate and the horizontal plate through the connecting rod, and the sponge between the two is extruded to block the joint.

[0022] Preferably, the sealing assembly is removed before the upward template is removed after the bottom plate concrete upward part meets the conditions for removing the template in step seven.

[0023] After the upward template is removed, the automobile hook hooks the lifting ring, and the automobile lifts the bottom plate template to the outside of the bottom plate, during the lifting process, the movable rod will extrude the corresponding spring structure through the sliding plate to ensure that the bottom plate template is lifted horizontally, and then the suspension piece is removed from the shotcreting layer, and the bottom plate template is lifted together to the construction area, and finally the upper wall part is constructed.

[0024] Preferably, when drilling in step four, an anchor hole is drilled at the bottom of the first row of plant bar holes in the bottom part, and the anchor hole is arranged obliquely upward.

[0025] A long screw rod is installed in the anchor hole, and an angle steel is arranged at the end of the long screw rod, and the angle steel is used for supporting the bottom plate template.

[0026] Preferably, in step four, a waterproof layer is laid on the shotcreting layer and the foundation cushion layer.

[0027] In step five, a pressure foot plate is arranged on the long screw rod, the cross section of the pressure foot plate is a triangular structure, and the pressure foot plate is pressed against the waterproof layer through the nut on the long screw rod.

[0028] The full-silk water stop screw rod is further provided with a fixing plate for fixing the waterproof layer, and the fixing plate is fixed through the nut on the full-silk water stop screw rod.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] The cement mixing pile is used as the foundation pit support and the outer template of the wall at the same time, the shotcreting layer is constructed on the cement mixing pile, the shotcreting layer is used as the outer wall template, the plant bar hole is drilled on the shotcreting layer, the inner template is fixed through the full-silk water stop screw rod, and the outer wall concrete is poured in the inner template, so that the wall construction of the underground space is finally completed.

[0031] On the basis, the full-silk water stop screw rod is installed on the bottom plate outside template, the bottom plate outside template is fixed through the full-silk water stop screw rod, the suspension piece is installed through the plant bar hole above the bottom plate outside template before the bottom plate is constructed, the bottom plate template is horizontally suspended to the design elevation position through the suspension piece and the telescopic rod, and the suspension piece can ensure that the bottom plate template is horizontally lifted when the bottom plate template is removed, so that the problem of not setting the bottom plate template in the prior art is solved, the problem that the removal cannot be efficiently completed is solved, and the problem that the whole lifting cannot ensure horizontal lifting is solved.

[0032] On the basis, waterproof layer is arranged on the shotcrete layer and the base cushion layer, waterproof problem is solved through the waterproof layer, and fixed plates and pressure foot plates are arranged on the full-thread water stop screw and the long screw, so that high-quality construction of the waterproof layer can be ensured through the fixed plates and the pressure foot plates, and especially, the waterproof layer is prone to separation at corners of the shotcrete layer and the base cushion layer.

[0033] On the basis, a sealing assembly is installed at the bottom of the outer turning part of the bottom plate, the sponge body is pressed and fixed between the outer turning part of the formwork and the bottom plate formwork through the pressing plate extruded by the pressure screw after the sealing assembly is fixed, the sealing assembly is used for sealing the joint of the two, and the problem of mortar leakage at the joint is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a top view of the overall structure of the present application;

[0035] Figure 2 It is a construction drawing of the construction bottom plate and the outer turning part of the bottom plate of the present application;

[0036] Figure 3 It is Figure 2 It is a local enlarged view of A in FIG. 8;

[0037] Figure 4 It is a connection structure diagram of the suspension piece, the telescopic rod piece and the bottom plate formwork of the present application;

[0038] Figure 5 It is Figure 4 It is a local structure diagram of the telescopic rod piece;

[0039] Figure 6 It is a construction drawing of the upper wall of the construction;

[0040] Figure 7 It is a local diagram of the outer turning part of the bottom plate;

[0041] Figure 8 It is Figure 7 It is a structure diagram of the full-thread water stop screw;

[0042] Figure 9 It is Figure 7 It is a structure diagram of the long screw;

[0043] Figure 10 It is Figure 4 It is a length adjustment structure diagram of the telescopic rod piece. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] Embodiment 1, as shown in Figure 1 , 2 A soft foundation pit supporting and wall formwork construction method, comprising the following steps:

[0047] Step one, positioning and setting out, constructing cement mixing pile 1 according to the supporting design construction drawing;

[0048] Step two, excavating the foundation pit soil to the bottom of the foundation cushion, cleaning the floating soil on the cement mixing pile 1, and retaining the soil between the triangular area piles without cleaning;

[0049] Step three, implanting φ6 steel short rod 3 on the cement mixing pile 1, hanging steel mesh 4, and spraying to obtain a sprayed layer 5, the sprayed layer thickness is 100mm, and the surface flatness is well controlled;

[0050] Step four, after the sprayed layer reaches the strength, pouring the foundation cushion, drilling and implanting the steel bars along the center line of the cement mixing pile 1 at 500mm in both directions, the hole diameter is φ14, the hole depth is 200mm, and the first row of steel bar holes at the bottom is located at a height of the cushion surface of the bottom plate thickness+250mm;

[0051] Step five, implanting full-thread water stop screw 9 using steel bar implanting glue, the length of the full-thread water stop screw 9 is 450mm+wall thickness, a water stop piece 10 is arranged at the position of 1 / 2 wall thickness, and the wall thickness is limited by a plastic interface 11;

[0052] Step six, after installing the wall horizontal construction joint according to the design requirements of the construction drawing, a φ22 steel short rod 12 with a length of 200mm is pre-buried at a position 2m away from the sprayed layer 2, is anchored into the bottom plate concrete by 100mm, and the position is staggered by 250mm from the position of the full-thread water stop screw 9;

[0053] Step seven, after the upper turned part of the bottom plate concrete has the condition of removing the formwork, the formwork of the upper turned part of the bottom plate is removed, and 20mm wide double-sided adhesive tape 13 is pasted on the edge of the upper turned wall part;

[0054] Step eight, sequentially passing the upper wall formwork into the full-thread water stop screw 9, the bottom layer formwork is in a hanging manner, the bolts on the full-thread water stop screw 9 in the upper turned part of the bottom plate concrete are reserved for reinforcement, so as to avoid cement paste leakage during pouring; and the formwork is reinforced from the outside by using "3" shaped clamps and formwork back lath;

[0055] Step nine, the short steel pipe is inserted into the micro-adjusting bolt to top the upper formwork transverse steel pipe back rest at the φ22 steel bar short rod 12 exposed part;

[0056] Step ten, pouring the wall concrete.

[0057] In use, first, the cement mixing pile support is sprayed, the cement mixing pile and the soil between the piles are hung and sprayed, the flatness of the basement wall as the outer formwork is ensured, the load bearing capacity of the outer formwork is ensured, the deformation of the basement wall is prevented, and the construction quality is ensured; second, the cement mixing pile and the soil between the piles are hung and sprayed without the need of an external operation surface, and are directly used as the outer formwork; third, the outer formwork is pulled on the cement mixing pile, the reinforcement quality of the outer formwork is ensured, the micro-adjusting back support is used as a supplementary reinforcement measure of the outer formwork, the reinforcement quality of the formwork is ensured, the subsequent procedures are seamlessly connected, the construction period is shortened, the quality is ensured, and the cost is reduced.

[0058] As shown in Figure 2 , 3 , 4, 5, 10, in step five, the bottom plate and the bottom plate upturned part formwork construction steps are further included, and the steps are as follows:

[0059] First, the suspension piece 2 is threadedly installed in at least the second, preferably the third or the fourth, plant bar hole above the bottom plant bar hole, the end of the suspension piece 2 is provided with a connecting lug, the connecting lug is rotationally installed, the suspension piece 2 is installed with the telescopic rod piece 6 through the connecting lug, the telescopic rod piece 6 is composed of a sleeve 61 in the middle and movable rods 62 installed at both ends of the sleeve 61 and partially located in the sleeve 61, the end of each of the two movable rods 62 in the sleeve 61 is provided with a sliding plate 63, the sliding plate 63 is slidably arranged in the sleeve 61, and the two ends of the sleeve 61 are provided with limiting plates, a spring structure 64 is installed between the two sliding plates 63, and a length adjustment structure is provided on one of the movable rods 62, as shown in Figure 4 and Figure 8 , the length adjustment structure is a threaded sleeve and threaded rods at both ends of the threaded sleeve, opposite movements of the threaded rods are driven by adjusting the threaded sleeve, the telescopic rod piece 6 is obliquely arranged downward, and the connecting plate 65 is hingedly installed at the bottom end, the connecting plate 65 is fixed to the bottom plate formwork 7 through screws, and a lifting eye is installed at the top of the bottom plate formwork 7;

[0060] Secondly, the threaded sleeve of the length adjustment structure is adjusted to ensure that the elevation and the levelness of the bottom plate formwork 7 meet the thickness and the levelness requirements of the bottom plate in the construction drawing design;

[0061] Thirdly, the full-thread water stop screw 9 is installed in the first plant bar hole at the bottom, the bottom plate upturned part formwork is reinforced on the bottom plate formwork 7 from the outside through the “3”-shaped clamp and the formwork back rest, and a sealing assembly is installed at the joint of the bottom plate formwork 7 and the bottom plate upturned part formwork.

[0062] Finally, after the installation of the bottom plate template 7 and the bottom plate upper turning part template is completed, the concrete of the bottom plate and the bottom plate upper turning part is poured.

[0063] In the above embodiment:

[0064] Before the upper turning template is removed after the bottom plate concrete upper turning part has the condition of removing the template, the sealing assembly is removed first;

[0065] After the upper turning template is removed, the bottom plate template 7 is hoisted to the upper part of the bottom plate by the automobile hook, and the movable rod 62 will press the corresponding spring structure 64 through the sliding plate 63 during the hoisting process, so as to ensure that the bottom plate template 7 is hoisted horizontally, and then the suspension piece 2 is removed from the shotcreting layer 5, and the bottom plate template 7 is hoisted together with the suspension piece 2 to the construction area, and finally the upper wall part is constructed.

[0066] In the above embodiment:

[0067] As shown in Figure 3 , the sealing assembly comprises a foot plate 8, both ends of the foot plate 8 are respectively vertical plates 81 and horizontal plates 82, and the foot plate 8 is installed on the bottom plate template 7 and the bottom plate upper turning part template through bolts, a pressing plate 83 is movably installed on the foot plate 8, a guide rod 84 is arranged on the pressing plate 83, the guide rod 84 freely penetrates the foot plate 8, a pressurizing screw rod 86 is installed on the foot plate 8, the pressurizing screw rod 86 is used to press the pressing plate 83 to move towards the joint of the bottom plate template 7 and the bottom plate upper turning part template, both ends of the pressing plate 83 are provided with connecting rods 88, spring bodies 89 are arranged between the connecting rods 88 and the pressing plate 83, free ends of the connecting rods 88 are provided with extrusion blocks 810, one side of the extrusion blocks 810 close to the joint is provided with an arc-shaped plate, the arc-shaped plate is suitable for limiting the outward movement of the sponge body 811, one extrusion block 810 is slidably installed on the vertical plate 81, and the other is slidably installed on the horizontal plate 82, and the sponge body 811 is installed between the extrusion blocks 810;

[0068] By adjusting the pressurizing screw rod 86, the pressing plate 87 is pressed to move towards the joint of the bottom plate template 7 and the bottom plate upper turning part template, the pressing plate 87 drives the extrusion blocks 810 to move relative to the vertical plate 81 and the horizontal plate 82 through the connecting rods 88, and the sponge body 811 between the two is extruded to block the joint.

[0069] In the above embodiment:

[0070] As shown in Figure 2 , 7 and 9, when the hole is drilled in step four, an anchor hole is drilled at the bottom of the first row of anchor holes at the bottom, and the anchor hole is arranged obliquely upward;

[0071] The long screw 14 is installed in the anchor hole, and an angle steel 15 is arranged at the end of the long screw 14, which is used for supporting the bottom plate formwork 7 and ensuring the structural strength of the end of the bottom plate formwork 7.

[0072] In the above embodiment,

[0073] As shown in Figure 2 、 7 In step four, a waterproof layer 51 is laid on the shotcrete layer 5 and the base cushion, and a waterproof roll is used to ensure the waterproof performance of the wall and the bottom plate through the waterproof layer 51.

[0074] In step five, as shown in Figure 8 、 9 The long screw 14 is provided with a pressing foot plate 141, which has a triangular cross section, and the waterproof layer 51 is fixed and pressed by the pressing foot plate 141 through the nut on the long screw 14. The waterproof layer 51 is fixed by adjusting the nut before pouring the bottom plate concrete, so as to prevent the area of the waterproof layer 51 from further expanding and falling off from the shotcrete layer 5 in the later period of backwater, and losing the waterproof effect.

[0075] The full-wire water stop screw 9 is further provided with a fixing plate 91 for fixing the waterproof layer 51, which is fixed by the nut on the full-wire water stop screw 9, so as to further fix the waterproof layer 51 on the shotcrete layer 51. The fixing plate 91 has the same effect as the pressing foot plate 14.

[0076] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. The substitution can be a partial structure, device, method step substitution, or a complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered in the protection scope of the present application.

Claims

1. A method for constructing a soft ground excavation support and wall form, characterized by, The method comprises the following steps: Step one, positioning the wire, constructing the cement mixing pile according to the support design construction drawing; Step two, excavating the foundation pit soil to the foundation cushion bottom, cleaning the floating soil on the cement mixing pile, and retaining the soil between the triangular area piles without cleaning; Step three, implanting a φ6 steel short rod on the cement mixing pile, hanging a steel mesh, and spraying to obtain a sprayed layer, the sprayed thickness being 100mm, and the surface flatness being controlled; Step four, after the sprayed layer reaches the strength, pouring the foundation cushion, drilling the steel bar holes along the center line of the cement mixing pile at 500mm in two directions, the hole diameter being φ14, and the hole depth being 200mm, the first steel bar hole at the bottom being located at a distance of the cushion height of the bottom plate thickness+250mm; Step five, implanting the full-silk water stop screw by using the steel bar implanting glue, the length of the full-silk water stop screw being 450mm+wall thickness, the water stop piece being arranged at the position of 1 / 2 wall thickness, and the wall thickness adopting the plastic interface limiting; Step six, after the wall horizontal construction joint is installed according to the construction drawing design requirements, a φ22 steel short rod with a length of 200mm is pre-buried at a position 2m away from the sprayed layer, and is anchored into the bottom plate concrete by 100mm, the position being staggered by 250mm from the position of the full-silk water stop screw; Step seven, after the bottom plate concrete upper turning part has the condition of removing the formwork, the formwork of the bottom plate upper turning part is removed, and the 20mm wide double-sided adhesive tape is pasted on the edge of the upper turning wall part; Step eight, the upper wall formwork is sequentially penetrated into the full-silk water stop screw, the bottom layer formwork is hung downward, the bolt on the full-silk water stop screw in the bottom plate concrete upper turning part is reserved for reinforcement, so as to avoid cement paste leakage during pouring; the formwork is reinforced from the outside by using the "3" shaped card and the formwork back ridge; Step nine, the turning buckle is sleeved on the exposed head of the φ22 steel short rod, the front end of the short steel pipe is inserted into the fine adjustment bolt to top the upper formwork horizontal steel pipe back ridge; Step ten, pouring the wall concrete; In step five, the bottom plate and the bottom plate upper turning part formwork construction steps are further included, and specifically as follows: Firstly, the suspension piece is threadedly installed in at least the second steel bar hole above the bottom steel bar hole, the end of the suspension piece is provided with a connecting lug and installs the telescopic rod piece through the connecting lug, the telescopic rod piece is a sleeve in the middle and movable rods installed at both ends of the sleeve and partially located in the sleeve, the ends of the two movable rods in the sleeve are provided with sliding plates, a spring structure piece is installed between the two sliding plates, a length adjustment structure is arranged on one of the movable rods, the telescopic rod piece is arranged obliquely downward, and a connecting plate is hingedly installed at the bottom end, the connecting plate is fixed on the bottom plate formwork, and a lifting eye is installed on the top of the bottom plate formwork; Secondly, the length adjustment structure is adjusted to ensure that the elevation and levelness of the bottom plate formwork meet the bottom plate thickness and levelness requirements of the construction drawing design; Thirdly, the full-silk water stop screw is installed in the first steel bar hole at the bottom, and the bottom plate upper turning part formwork is reinforced on the bottom plate formwork from the outside by using the "3" shaped card and the formwork back ridge, and a sealing assembly is installed at the joint of the bottom plate formwork and the bottom plate upper turning part formwork; Finally, after the bottom plate formwork and the bottom plate upper turning part formwork are installed, the concrete of the bottom plate and the bottom plate upper turning part is poured; The sealing assembly comprises a foot plate, vertical plate and horizontal plate at two ends of the foot plate, and the foot plate is bolted to the bottom plate template and the bottom plate upper turning part template, a pressing plate is movably installed on the foot plate, a guide rod is arranged on the pressing plate, the guide rod freely penetrates the foot plate, a pressing screw is installed on the foot plate, the pressing screw is used to extrude the pressing plate to move close to the joint of the bottom plate template and the bottom plate upper turning part template, connecting rods are arranged at two ends of the pressing plate, springs are arranged between the connecting rods and the pressing plate, extrusion blocks are installed at free ends of the connecting rods, one extrusion block is slidably installed on the vertical plate and the other is slidably installed on the horizontal plate, and a sponge body is installed between the extrusion blocks; By adjusting the pressing screw, the pressing plate is extruded to move close to the joint of the bottom plate template and the bottom plate upper turning part template, the pressing plate drives the extrusion blocks to move relative to the vertical plate and the horizontal plate through the connecting rods, and the sponge body between the extrusion blocks is extruded to seal the joint.

2. The method according to claim 1, wherein, Before the upper turning template is removed when the bottom plate concrete upper turning part meets the conditions for removing the template, the sealing assembly is removed first; After the upper turning template is removed, the bottom plate template is hoisted above the bottom plate outer turning part by the automobile hook, and in the hoisting process, the movable rods will extrude the corresponding spring structure through the sliding plates, so that the bottom plate template is hoisted horizontally, and then the suspension piece is removed from the shotcrete layer and hoisted together with the bottom plate template from the construction area, and finally the upper wall part is constructed.

3. The soft foundation pit supporting and wall template construction method according to claim 2, characterized in that: In step four, the anchor hole is drilled at the bottom of the first row of anchor holes in the bottom part, and the anchor hole is arranged obliquely upward; The long screw is installed in the anchor hole, and an angle steel is arranged at the end of the long screw, and the angle steel is used to support the bottom plate template.

4. The method according to claim 3, wherein In step four, the waterproof layer is laid on the shotcrete layer and the foundation cushion layer; In step four, the long screw is provided with a pressing foot plate, and the cross section of the pressing foot plate is triangular structure and is pressed against the waterproof layer through the nut on the long screw; The full-silk water stop screw is further provided with a fixed plate for fixing the waterproof layer, and the fixed plate is fixed through the nut on the full-silk water stop screw.

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