CN210002862U

CN210002862U - adjacent existing basement outer wall unilateral formwork system

Info

Publication number: CN210002862U
Application number: CN201920701841.3U
Authority: CN
Inventors: 樊奇侠; 文健; 夏飞; 曾令权
Original assignee: Jiangxi Guojin Construction Group Co Ltd
Current assignee: Jiangxi Guojin Construction Group Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-01-31
Anticipated expiration: 2029-05-16

Abstract

The utility model discloses an kind are close to existing basement outer wall unilateral formwork system, including the basement outer wall, the foundation slab, a formwork support body, the side form board, side form board secondary joist, side form board main joist, the top form board, top form board secondary joist, top form board main joist and roof, be equipped with the guide wall on the foundation slab, according to interval 1 mx 1m on the foundation slab indulge horizontal layout embedded bar ground anchor, pre-buried stagnant water steel sheet in the guide wall upper end, pre-buried row screw rod in the guide wall outside, a formwork support body comprises a formwork pole setting and a formwork horizontal pole, roof setting way construction joint apart from outdoor wall limit 1/3 span, side form board is in the aspect through a formwork horizontal pole and additional horizontal pole side top tight, in addition the aspect side form board through end cooperation locking part of screw rod.

Description

adjacent existing basement outer wall unilateral formwork system

Technical Field

The utility model belongs to the technical field of housing construction engineering, especially, relate to kinds of adjacent existing basement outer wall unilateral formwork systems.

Background

In urban centers with tense land, underground spaces are developed in a large amount, the space between basements of adjacent buildings is smaller and smaller, for example, in some commercial development projects of subway station projects connected with the basements, in order to expand a large enough commercial development area, the distance between the outer walls of the basements of the two projects is even less than 50cm, and the outer walls of the two projects are both related to waterproof construction, so that a method that wall bodies are reserved for tie screws to perform single-side formwork support reinforcement on another wall bodies cannot be adopted, and double-side formwork support reinforcement is performed by no operation space arrangement personnel, and particularly for higher basements, the wall construction is more difficult for engineering technicians.

The existing common method and system for erecting the external wall of the adjacent basement comprise the steps of 1, embedding a screw rod on the existing external wall of the basement and then erecting a formwork at one side, 2, embedding a steel pipe or a screw rod on a foundation bottom plate and then using an inclined strut steel pipe to reinforce the formwork, 3, customizing a combined triangular steel truss in a factory, arranging an anchoring part at the bottom of the steel truss, embedding the anchoring part into foundation concrete when the bottom plate is poured, and then erecting the formwork for the wall.

For example, CN201710123307.4 'method for single-side formwork of shear wall', the method comprises the steps of positioning bar planting holes on an enclosure pouring pile, secondly filling concrete between the enclosure pouring pile and the shear wall, thirdly installing a formwork on the outer side of the shear wall, fourthly arranging a plurality of vertical inner ridges on the outer side of the formwork and transversely outward ridges on the outer side of the vertical inner ridges, fifthly implanting ends of counter-pulling screws into the enclosure pouring pile, pulling and connecting the other ends of the counter-pulling screws with the transversely outward ridges, sixthly embedding diagonal brace fixing rod pieces in pouring of a bottom plate, and seventhly installing inner-side diagonal braces, wherein ends of the diagonal braces are fixed on the diagonal brace fixing rod pieces, and the other ends of the diagonal braces are fixed on the counter-pulling screws.

CN 201621225458.8 external wall formwork structure in narrow area, utilize current supporting construction or building as the support of outside template hang fixed reinforcing bar net piece and spray the fine aggregate concrete on current supporting construction or building on reinforcing bar net piece again and form the outside template as the outer wall thereby reach the effect of two-sided formwork, and it adopts the split structure of the combination of connecting rod and second connecting rod to replace traditional single split screw rod.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an kind kind are close to existing basement outer wall unilateral formwork system.

The utility model provides a technical scheme of above-mentioned problem is:

A single-side formwork system adjacent to an existing basement outer wall comprises the basement outer wall, a foundation slab, a formwork support body, side formworks, side formwork secondary keels and side formwork main keels, a top formwork secondary keel, a top formwork main keel and a top plate, wherein the foundation slab is arranged on the basement ground, a guide wall is arranged on the foundation slab, reinforcing steel bar ground anchors with the diameter of 25mm are pre-embedded on the foundation slab, the distance between the reinforcing steel bar ground anchors and the outer side of the guide wall is 40cm, the length of the exposed foundation slab of each reinforcing steel bar ground anchor is 10cm, a water stop steel plate is pre-embedded at the upper end of the guide wall, rows of phi 14mm fourth screws are pre-embedded on the outer side of the guide wall, the formwork support body consists of formwork support upright posts and formwork support horizontal rods, the lower ends of the formwork upright posts are sleeved on the reinforcing steel bar ground anchors and are in transverse arrangement according to the distance of 1m x 1m, the formwork horizontal rods are fixedly connected with the formwork support posts and are fixedly connected with the formwork support posts at the vertical distance of 1.5m, the upper ends of the formwork support upright posts, the top formwork support posts support upright posts support the top formwork and the top formwork, the side formwork support post of the side formwork and the side formwork are tightly connected with a 355636, the side formwork, the lateral formwork is.

, paving th waterproof coiled materials on the outer side of the basement outer wall, pasting a polystyrene board with the thickness of 20cm on the outer side of the th waterproof coiled materials, building a sand-lime brick moulding bed on the outer side of the polystyrene board, arranging a 1:3 cement mortar leveling layer with the thickness of 15mm on the surface of the brick moulding bed, and paving second waterproof coiled materials on the leveling layer and the basement ground.

, when the height of the wall to be poured is less than 3.5m, the wall can be poured with times of concrete at the rest construction joints of the top plate, when the height of the wall to be poured is 3.5 m-7 m, the wall needs to be poured in an upper layer and a lower layer, the side formworks need to be erected in the upper layer and the lower layer, the erected height of the side formworks in the lower layer is 3m, rows of phi 14mm second screws are pre-embedded in the upper parts of the side formworks in the lower layer and used for reinforcing the side formworks in the upper layer, and a third water stop steel plate is installed at the construction joints of the wall in the lower.

, after the strength of the lower outer wall concrete reaches the design requirement, the upper side template is locked and reinforced by the locking component through the end of the second screw rod, the upper side template is prevented from floating upwards, the upper side template is propped against the upper side template by the horizontal rod of the formwork support and the additional horizontal rod, and the upper wall and the residual construction joint of the top plate are poured with concrete for times.

Step , the length of the additional horizontal rod is 1.3m, the longitudinal and transverse spacing is 0.5m, the ends of the horizontal rod of the formwork support and the additional horizontal rod are respectively provided with a support for tightly supporting the main keel of the side formwork, and therefore the secondary keel and the side formwork are supported.

, the formwork support body further comprises a formwork support scissor support and an inclined support assembly, the upper inclined support assembly and the lower inclined support assembly are both composed of a plurality of inclined support steel pipes, wherein the end of the inclined support steel pipe in the upper inclined support assembly is fixed at the bottom of the top formwork secondary keel, the end inclines towards the side formwork side and is fixed at the end of the formwork support horizontal rod or the additional horizontal rod, the end of the inclined support steel pipe in the lower inclined support assembly is fixed on the base bottom plate, the end inclines towards the side formwork side and is fixed at the end of the formwork support horizontal rod or the additional horizontal rod, the distance between the corresponding inclined support steel pipes in the upper inclined support assembly and the lower inclined support assembly is 1m multiplied by 1m, and the acute angle formed by the inclined support steel pipe and the base bottom plate or the top plate is smaller than 30 degrees.

And , the side template main keels are double steel pipe main keels, and the supporting point spacing of the side template main keels is 0.5m multiplied by 0.5 m.

And , arranging 50mm multiplied by 100mm battens as secondary keels, arranging 200mm space battens and arranging 18mm thick plywood as a template.

And , the transverse spacing of the screws in each row is 500 mm.

And , the height of the guide wall is 20-40 cm.

Compared with the prior art, the utility model have the advantage as follows:

1. the formwork construction not only fully considers the waterproof importance of the basement outer wall, but also considers the safety, reliability and economic applicability in the construction process;

2. the formwork system is not provided with the opposite penetrating screw rod when the outer wall is reinforced, so that the impermeability integrity of the concrete structure is ensured to the maximum extent;

3. the second waterproof coiled material is pre-paved on the mortar leveling layer, so that the reliable bonding of the outer wall concrete and the waterproof layer is ensured;

4. all materials of the formwork support system are turnover materials commonly used in construction sites, turnover is high, use cost is low, a roof is constructed firstly only through conversion of construction procedures, then an outer wall is constructed, a stable roof formwork support body and inclined supports acting on a bottom plate and the roof are utilized to reinforce the single-side formwork of the outer wall, and construction safety is guaranteed to the maximum extent.

Drawings

Fig. 1 is a schematic view of basement exterior wall waterproofing and foundation slab construction according to the preferred embodiment of the present invention 1;

fig. 2 is a schematic view of erecting a formwork support body and constructing a basement roof in the preferred embodiment 1 of the present invention;

fig. 3 is a schematic view of the formwork setting of the side formwork in the preferred embodiment 1 of the present invention;

fig. 4 is a schematic view of erecting a formwork support body, constructing a basement roof, and shaping a lower-layer side formwork in the preferred embodiment 2 of the present invention;

fig. 5 is a schematic view of the upper-layer side form plate formwork shaping in the preferred embodiment 2 of the present invention;

in the figure, a steel bar ground anchor 1, a th screw rod 2, a th water stop steel plate 3, a th waterproof coiled material 4, a sand lime brick moulding bed 5, a polystyrene board 6, a basement outer wall 7, a formwork support upright rod 8, a formwork support horizontal rod 9, an additional formwork support horizontal rod 10, a formwork support bridging 11, an inclined strut steel pipe 12, a top support 13, a side secondary keel 14, a side formwork 15, a side main keel 16, a second waterproof coiled material 17, a guide wall 18, a foundation bottom plate 19, a top formwork 20, a top formwork secondary keel 21, a top formwork main keel 22, a second screw rod 23, a second water stop steel plate 24 and a third water stop steel plate 25.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further illustrated in with reference to the following specific drawings.

Example 1: a certain large-scale complex project is an integral two-layer basement, in order to realize better people flow butt joint with a planned subway station, a newly-increased subway connection business street with the width of 32-51 m, the length of 670m and the building area of 27000 square meters is planned between the constructed complex basement and the planned subway station, wherein a section of about 100m is tightly adjacent to the outer wall of the constructed basement by 30-50 cm, the distance between the two walls is narrow, and no operating space is provided for constructors; in the embodiment, the adjacent basement outer wall 7 in the 100m section is constructed by adopting a wall single-side formwork method;

referring to fig. 1- types of single-side formwork supporting systems adjacent to an existing basement outer wall and shown in fig. 3, the single-side formwork supporting system comprises a basement outer wall 7, a foundation bottom plate 19, a formwork supporting frame body, side formworks 15, side formwork secondary keels 14, side formwork main keels 16, a top formwork 20, a top formwork secondary keel 21 and a top formwork main keel 22, the foundation bottom plate 19 is arranged on the ground, a guide wall 18 is arranged on the foundation bottom plate 19, preferably, the height of the guide wall 18 is 20-40 cm, steps are preferably 30cm, reinforcing steel bar ground anchors 1 with the diameter of 25mm are longitudinally and transversely arranged on the foundation bottom plate 19 at intervals of 1m x 1m, reinforcing steel bar ground anchors 1 with the length exposing the foundation bottom plate 19 of 10cm are arranged on the guide wall 1, a water stop steel plate 3 is pre-embedded at the upper end of the guide wall 18, screw rods 2 with the diameter of 7 rows of the reinforcing steel bar phi 14mm are pre-embedded on the outer side of the foundation bottom plate 19 at intervals of 40cm, the guide wall 18, the formwork supporting frame body is composed of a formwork supporting frame 8 and a supporting horizontal rod 9, the supporting frame vertical rod is sleeved on the lower end of the reinforcing steel bar ground anchor upright rod, the supporting frame body is preferably, the supporting frame is arranged on the top formwork supporting frame, the top formwork is arranged on the top.

In the embodiment, a th waterproof coiled material 4 is laid on the outer side of the basement outer wall 7, a polystyrene board 6 with the thickness of 20cm is pasted on the outer side of the th waterproof coiled material 4, a sand-lime brick moulding bed 5 is built on the outer side of the polystyrene board 6, a cement mortar leveling layer with the thickness of 15mm and the thickness of 1:3 is arranged on the surface of the brick moulding bed, and a second waterproof coiled material 17 is laid on the leveling layer and the basement ground.

In the embodiment, when the height of the wall body to be poured is less than 3.5m, the wall body and the residual construction joints of the top plate can be used for pouring concrete for times,

in this embodiment: the length of the additional horizontal rod 10 is 1.3m, the longitudinal and transverse intervals are 0.5m, and the end parts of the die support horizontal rod 9 and the additional horizontal rod 10 are respectively provided with a jacking 13 for jacking a main keel 16 of the side die plate, so that a secondary keel 14 and a side die plate 15 of the side die plate are jacked.

In the embodiment, in order to enhance the lateral stability of the formwork support body in the steps, the formwork support body further comprises a formwork support scissor support 11 and an inclined support assembly, wherein the upper inclined support assembly and the lower inclined support assembly are both composed of a plurality of inclined support steel pipes 12, ends of the inclined support steel pipes 12 in the upper inclined support assembly are fixed at the bottom of a top formwork secondary keel 21, the other ends of the inclined support steel pipes are inclined towards the side of a side formwork 15 and fixed at the end of a formwork support horizontal rod 9 or an additional horizontal rod 10, ends of the inclined support steel pipes 12 in the lower inclined support assembly are fixed on a base bottom plate 19, the other ends of the inclined support steel pipes are inclined towards a side formwork 15 and fixed at the end of the formwork support horizontal rod 9 or the additional horizontal rod 10, the distance between the corresponding inclined support steel pipes 12 in the upper inclined support assembly and the lower inclined support assembly is 1m × 1m, and the acute angle formed by inclination of the inclined support steel pipes 12.

In this embodiment: the side template main keels 16 are double steel pipe main keels, and the supporting point spacing of the side template main keels 16 is 0.5m multiplied by 0.5 m.

In this embodiment: the secondary keel is 50mm multiplied by 100mm battens, the distance between the battens is 200mm, and the template is 18mm thick wood plywood.

In this embodiment: the transverse spacing of each row of screws is 500 mm.

The construction procedure of example 1 is as follows:

s1 waterproof construction of basement exterior wall

Laying th waterproof coiled materials 4 on the outer side of the basement outer wall 7, pasting a polystyrene board 6 with the thickness of 20cm on the outer side of th waterproof coiled materials 4 to ensure that enough expansion space exists between the two walls, building a sand-lime brick moulding bed 5 on the outer side of the polystyrene board 6, smearing cement mortar with the thickness of 15mm being 1:3 on the surface of the brick moulding bed for leveling, and laying second waterproof coiled materials 17 on the leveling layer and the basement ground;

s2 construction of basement foundation slab and guide wall

Pouring concrete on a foundation slab 19 and a guide wall 18 on the ground of a basement, wherein the height of the guide wall 18 is 20-40 cm, preferably 30cm, 6 rows of reinforcing steel bar ground anchors 1 with the diameter of 25mm are longitudinally and transversely arranged on the foundation slab 19 at a distance of 1m multiplied by 1m and outside the guide wall 18, the length of the reinforcing steel bar ground anchors 1 exposed out of the foundation slab 19 is 10cm, water stop steel plates 3 are pre-embedded at the upper end of the guide wall 18, rows of screw rods 2 with the diameter of 14mm are pre-embedded outside the guide wall 18 and used for reinforcing side formworks 15, so that the formworks of the wall are prevented from floating upwards, the quality of the joint of the upper concrete and the lower concrete is ensured to be good, and phenomena of slab staggering, grout leakage and the like are;

s3, erecting formwork support bodies and constructing basement top plate

Sleeving the lower ends of formwork support upright posts 8 on a reinforcing steel bar ground anchor 1, arranging the formwork support upright posts longitudinally and transversely at intervals of 1m multiplied by 1m in mode, carrying out scheme checking calculation according to a top plate structure, if the checked interval is not 1m multiplied by 1m, correspondingly adjusting the interval of the embedded reinforcing steel bar ground anchor 1, arranging formwork support horizontal rods 9 transversely at a vertical interval of 1.5m and fixing the formwork support horizontal rods and the formwork support upright posts 8 into a formwork support body, supporting a top formwork main keel 22, a top formwork secondary keel 21 and a top formwork 20 at the upper ends of the formwork support upright posts 8 through top supports 13 respectively, arranging construction joints on a top plate at the position where the top plate is 1/3 away from the basement outer wall, installing a second water stop steel plate 24 and pouring top plate concrete;

s4, formwork supporting and shaping of side formwork

After the strength of the top plate concrete reaches the design requirement, the side templates 15 and the side template secondary keels 14 are sequentially abutted against the outer side of the guide wall 18, the end of the pre-embedded screw 2 is matched with a locking part to lock and reinforce the side templates 15, the side templates 15 are prevented from floating upwards, and the side templates 15 are abutted by the horizontal rods 9 of the formwork support and the additional horizontal rods 10;

and S5, when the height of the wall body to be poured is less than 3.5m, the wall body and the rest part of the top plate can be poured with concrete for several times.

Example 2 in this example, the height of the commercial floor of the basement of the complex is 6.25 m-7 m, considering that the height of the wall is high, if times of concreting are adopted, the lateral pressure is easily too high, and the formwork expanding is caused, therefore, formwork supporting and concreting are carried out twice, and after the top slab concreting is finished and the strength is reached, the formwork supporting frame body and the inclined strut steel tube 12 are used for reinforcing the single-side formwork, as shown in fig. 1, 4 and 5:

example 2 the construction procedure was as follows:

s1 waterproof construction of basement exterior wall

s2 construction of basement foundation slab and guide wall

Pouring concrete on a foundation slab 19 and a guide wall 18 on the basement ground, longitudinally and transversely arranging and embedding steel bar ground anchors 1 with the diameter of 25mm on the foundation slab 19 which is 40cm away from the outer side of the guide wall 18 at the interval of 1m multiplied by 1m, wherein the length of the steel bar ground anchors 1 exposed out of the foundation slab 19 is 10cm, water stop steel plates 3 are embedded at the upper end of the guide wall 18, and rows of screw rods 2 with the diameter of 14mm are embedded at the outer side of the guide wall 18 and used for reinforcing the side formworks 15;

s3, erecting formwork support bodies and constructing basement top plate

The lower ends of the formwork support upright rods 8 are sleeved on the steel bar ground anchor 1 and are longitudinally and transversely arranged at a distance of 1m multiplied by 1m, the formwork support horizontal rods 9 are transversely arranged at a vertical distance of 1.5m and are fixed with the formwork support upright rods 8 to form a formwork support body, the upper ends of the formwork support upright rods 8 respectively support a top formwork main keel 22, a top formwork secondary keel 21 and a top formwork 20 through a top support 13, construction joints are arranged on a top plate at a position 1/3 away from an underground outdoor wall, a second water stop steel plate 24 is installed, and top plate concrete is poured;

s4, formwork supporting and shaping of side formwork

After the strength of the concrete of the top plate reaches the design requirement, the longitudinal stability of a formwork support body of the top plate is the best at the moment, the side formworks 15 and the side formwork secondary keels 14 are sequentially abutted against the outer side of the guide wall 18, the side formworks 15 are locked and reinforced by matching the end of the pre-embedded screw 2 with a locking component, the side formworks 15 are prevented from floating upwards, and the horizontal rods 9 and the additional horizontal rods 10 of the formwork support body are used for supporting the side formworks 15;

s5, jumping to S6 when the height of the wall to be poured is 3.5-7 m;

s6, the wall body needs to be poured in an upper layer and a lower layer, the side formworks 15 need to be erected in the upper layer and the lower layer, the erected height of the side formworks 15 in the lower layer is 3m, rows of second screws 23 with the diameter of 14mm are pre-embedded in the upper parts of the side formworks 15 in the lower layer and used for reinforcing the side formworks 15 in the upper layer, then lower layer wall body concrete is poured, and third water stop steel plates 25 are installed at construction joints of the lower layer wall body;

s7, after the strength of the lower outer wall concrete reaches the design requirement, the end of the second screw 23 is used for locking and reinforcing the upper side formwork 15 by using a locking component to prevent the upper side formwork 15 from floating upwards, the horizontal rod 9 of the formwork support and the additional horizontal rod 10 are used for propping against the upper side formwork 15, and the residual times of concrete pouring is carried out on the upper wall body and the top plate.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

The basement horizontal formwork system comprises a basement outer wall (7), a foundation bottom plate (19), a formwork support body, side formworks (15), side formwork secondary keels (14), side formwork main keels (16), a top formwork (20), a top formwork secondary keel (21), a top formwork main keel (22) and a top plate, and is characterized in that the foundation bottom plate (19) is arranged on the ground of the basement, a guide wall (18) is arranged on the foundation bottom plate (19), reinforcing steel bar ground anchors (1) with the diameter of 25mm are longitudinally and transversely arranged on the foundation bottom plate (19) and the distance of 1m multiplied by 1m is 40cm away from the outer side of the guide wall (18), the length of the exposed foundation bottom plate (19) of the reinforcing steel bar ground anchors (1) is 10cm, a second water stop steel plate (3) is embedded at the upper end of the guide wall (18), rows of phi 14mm of second screws (2) are arranged on the outer side of the guide wall (18) and are respectively sleeved on the upper end of a horizontal formwork support frame (3510) of a horizontal formwork (3514) of a horizontal formwork, the top formwork support frame (24) and a horizontal formwork (369) is arranged on the top formwork and a horizontal formwork support plate (24) and a top formwork support plate (24) and a horizontal formwork support rod (3615) is arranged on the top formwork and a horizontal formwork support plate (3) and a horizontal formwork support plate (3615) and a horizontal formwork support plate (3) which is arranged on the top formwork and a horizontal formwork support plate (3) and a horizontal formwork.
2. The kind of system for supporting formwork on one side of the outer wall of the existing basement according to claim 1, wherein th waterproof coiled material (4) is laid on the outer side of the outer wall (7) of the basement, a polystyrene board (6) with the thickness of 20cm is pasted on the outer side of the th waterproof coiled material (4), a mortar brick moulding bed (5) is built on the outer side of the polystyrene board (6), a 1:3 cement mortar leveling layer with the thickness of 15mm is arranged on the surface of the brick moulding bed, and a second waterproof coiled material (17) is pasted on the leveling layer and the ground of the basement.
3. The kind of adjacent existing basement outer wall unilateral formwork system of claim 1, characterized in that, when the wall height that needs to pour is less than 3.5m, the wall can be with the remaining construction joint times concreting of roof, when the wall height that needs to pour is 3.5 m-7 m, the wall needs upper and lower two-layer pouring, the sideform (15) needs upper and lower two-layer to prop up, the sideform (15) of lower floor props up and sets up the height and is 3m, on the side form (15) upper portion of lower floor pre-buried row phi 14 mm's second screw rod (23) for the sideform (15) of upper floor is reinforced, lower floor wall construction joint department installs third stagnant water steel board (25).
4. The kind of adjacent existing basement outer wall unilateral formwork system of claim 3, characterized in that, after the lower outer wall concrete intensity reached the design requirement, the side form (15) of upper strata is locked and reinforced with locking part through end of second screw (23) to the side form (15) of upper strata, prevent the side form (15) of upper strata come up, and utilize formwork support horizontal pole (9) and additional horizontal pole (10) to withstand the side form (15) of upper strata, the upper wall with the remaining construction joint of roof inferior concreting.
5. The kind of adjacent existing basement outer wall unilateral formwork support system of claim 1, characterized in that, additional horizontal pole (10) length 1.3m, the vertical and horizontal interval is 0.5m, the end of formwork support horizontal pole (9) and additional horizontal pole (10) sets up respectively and holds in the palm (13) and is used for holding up the side form board main joist (16), thus hold up side form board secondary joist (14) and side form board (15).
6. kind of single-side formwork system adjacent to the existing basement outer wall, according to claim 3, characterized in that, the formwork support body further includes formwork support scissors brace (11) and bracing component, the upper bracing component and the lower bracing component are both composed of several bracing steel pipes (12), wherein, end of the bracing steel pipe (12) in the upper bracing component is fixed on the bottom of the top formwork secondary keel (21), another end inclines to the side of the side formwork (15) and is fixed on the end of the formwork support horizontal bar (9) or the additional horizontal bar (10), end of the bracing steel pipe (12) in the lower bracing component is fixed on the base bottom plate (19), another end inclines to the side of the side formwork (15) and is fixed on the end of the formwork support horizontal bar (9) or the additional horizontal bar (10), the distance between the corresponding bracing steel pipe (12) in the upper bracing component and the lower bracing component is 1m x 1m, the acute angle between the bracing steel pipe (12) and the base bottom plate (19) is less than 30 °.
7. The kind of adjacent existing basement outer wall unilateral formwork support system of claim 1, characterized in that, the sideform main joist (16) is a double steel pipe main joist, the distance between the support points of the sideform main joist (16) is 0.5m x 0.5 m.
8. The kind of adjacent existing basement outer wall unilateral formwork system of claim 1, wherein, the false keel is 50mm x 100mm flitch, the distance between the flitch is 200mm, the template is 18mm thick wood plywood.
9. The kind of adjacent existing basement outer wall unilateral formwork system of claim 1, wherein, the horizontal interval of each row of screw rods is 500 mm.
10. adjacent existing basement wall unilateral formwork system according to claim 1, characterized in that the height of the guide wall (18) is 20-40 cm.