阅读说明：本技术 一种软土地基砖胎模施工结构及其工法 (Soft soil foundation brick moulding bed construction structure and construction method thereof ) 是由 丘志东 宋风云 尹谦 冯云 黎德华 于 2021-10-20 设计创作，主要内容包括：本发明公开了一种软土地基砖胎模施工结构及其工法。软土地基砖胎模施工结构,包括：垫砂层,铺设于开挖的软土回填区域；枕木,铺设于所述垫砂层；垫架,设置于所述枕木上；砖胎模,设置于所述垫架的一侧,且其下端设置有刃角,所述刃角可经所述枕木沉入所述垫砂层；模砼,通过混凝土浇筑于所述砖胎模内形成。本发明的软土地基砖胎模施工结构考虑到不良地质条件的影响,针对软土地基承载力低、压缩性大、透水性差的土质特点,砖胎模不需要对软土地基进行处理,并且可作为围挡给施工人员提供施工条件；也无需使用钢板桩等挡土措施,可避免周边土体坍塌对施工的影响,确保了施工人员的安全。本发明还公开了一种软土地基砖胎模施工结构工法。(The invention discloses a soft soil foundation brick moulding bed construction structure and a construction method thereof. Soft soil base brick bed die construction structures includes: a sand cushion layer is laid in the soft soil backfill region of the excavation; the sleeper is laid on the sand bedding layer; the cushion frame is arranged on the sleeper; the brick molding bed is arranged on one side of the bedding frame, the lower end of the brick molding bed is provided with a cutting edge, and the cutting edge can sink into the bedding sand layer through the sleepers; and (5) molding concrete, and pouring the concrete into the brick molding bed to form the brick molding bed. The soft soil foundation brick moulding bed construction structure provided by the invention considers the influence of adverse geological conditions, and aiming at the soil characteristics of low bearing capacity, large compressibility and poor water permeability of the soft soil foundation, the brick moulding bed does not need to treat the soft soil foundation and can be used as a barrier to provide construction conditions for constructors; and earth retaining measures such as steel sheet piles are not needed, so that the influence of the collapse of peripheral soil bodies on construction can be avoided, and the safety of constructors is ensured. The invention also discloses a construction method of the soft soil foundation brick moulding bed.)

1. The utility model provides a soft soil foundation brick child mould construction structures which characterized in that includes:

a sand cushion layer is laid in the soft soil backfill region of the excavation;

the sleeper is laid on the sand bedding layer;

the cushion frame is arranged on the sleeper;

the brick molding bed is arranged on one side of the bedding frame, the lower end of the brick molding bed is provided with a cutting edge, and the cutting edge can sink into the bedding sand layer through the sleepers;

and (5) molding concrete, and pouring the concrete into the brick molding bed to form the brick molding bed.

2. A soft soil foundation brick moulding bed construction structure of claim 1, characterized in that: the gaps among the sleepers are filled with sand, and the centers of the sleepers coincide with the center line of the edge angle.

3. A soft soil foundation brick moulding bed construction structure of claim 1, characterized in that: the thickness of the brick molding bed is 250mm, and the cutting edge is arranged at the position of 0.3m of the lower end of the brick molding bed.

4. A soft soil foundation brick molding die construction structure as claimed in any one of claims 1 to 3, characterized in that: the inner side of the template of the brick molding bed is provided with drag hooks, and stress bars are connected between the drag hooks.

5. A soft soil foundation brick moulding bed construction structure of claim 4, characterized in that: the template of the brick molding bed is a wood template with the thickness of 15 mm.

6. A soft soil foundation brick moulding bed construction structure of claim 4, characterized in that: a plurality of main keels which are transversely arranged are arranged on the outer side of a template of the brick molding bed and are arranged in parallel along the vertical direction;

and each main keel is provided with a pair of pulling screws, and the pair of pulling screws are used for connecting the main keels positioned at two sides of the template of the brick molding bed.

7. A soft soil foundation brick moulding bed construction structure of claim 6, characterized in that: the interval between the main joist is 450mm, the main joist is phi 48 x 3 steel pipe.

8. A soft soil foundation brick moulding bed construction structure of claim 6, characterized in that: the outer side of the template of the brick molding bed is also provided with a vertically arranged secondary keel.

9. A soft soil foundation brick moulding bed construction structure of claim 8, characterized in that: soft soil foundation brick child mould construction structures still includes the bracing, the bracing slope set up in the secondary joist with between the sand bed.

10. A soft soil foundation brick molding bed construction method for implementing the soft soil foundation brick molding bed construction structure of any one of claims 1 to 9, characterized by comprising:

backfilling a soft soil area to be excavated with coarse sand to form a sand cushion layer, and setting off the sand cushion layer;

paving a sleeper on the sand cushion layer, leveling the sleeper, and arranging a cushion frame on the sleeper;

binding a brick moulding bed, fixing the brick moulding bed on one side of the cushion frame, and sinking the edge angle at the lower end of the brick moulding bed into the sand cushion layer through the sleeper;

pouring concrete in the brick bed mould to form mould concrete, and removing the mould.

Technical Field

The invention relates to the technical field of building construction, in particular to a soft soil foundation brick moulding bed construction structure and a construction method thereof.

Background

The brick mould is widely applied to concrete members of foundation beams and foundation parts, such as waterproof parts outside basement exterior walls or parts where templates are not easy to remove.

However, in the soft soil foundation engineering, the silty soil has obvious thixotropy, the soil body is disturbed during construction, the structure is damaged, the soil is softened under the action of underground water, the soil flows in a liquefaction manner, even the sand flow phenomenon is generated, the earthwork around the foundation pit is easy to collapse, the construction cannot be normally carried out, and the foundation pit is difficult to dig to the designed depth.

In addition, the traditional brick moulding bed is not suitable for the height of the foundation beam and the bearing platform exceeding more than 500mm, because when the height of the foundation beam and the bearing platform is higher, the depth of backfill soil after the building of the moulding bed is completed is also deeper, so the brick moulding bed is easy to damage and deform when backfilling and tamping, and when concrete is poured and tamping, the brick moulding bed is easy to expand outwards and deform due to the downward fluidity of the concrete and the vibration force of a vibrating rod, so the loss of the concrete is increased, and simultaneously, the concrete member looks irregular. In addition, the existing brick moulding bed construction process of the soft soil foundation is complex, the cost is high, the construction efficiency is low, and the construction period is long.

Disclosure of Invention

Based on the above, the invention aims to provide a safe and practical soft soil foundation brick moulding bed construction structure and a construction method thereof, which have the advantages of cost saving, simple process, high construction efficiency and construction period saving.

In a first aspect, the soft soil foundation brick molding bed construction structure of the present invention includes:

a sand cushion layer is laid in the soft soil backfill region of the excavation;

the sleeper is laid on the sand bedding layer;

the cushion frame is arranged on the sleeper;

the brick molding bed is arranged on one side of the bedding frame, the lower end of the brick molding bed is provided with a cutting edge, and the cutting edge can sink into the bedding sand layer through the sleepers;

and (5) molding concrete, and pouring the concrete into the brick molding bed to form the brick molding bed.

The soft soil foundation brick moulding bed construction structure provided by the invention considers the influence of adverse geological conditions, and aiming at the soil characteristics of low bearing capacity, large compressibility and poor water permeability of the soft soil foundation, the brick moulding bed does not need to treat the soft soil foundation and can be used as a barrier to provide construction conditions for constructors; and earth retaining measures such as steel sheet piles are not needed, so that the influence of the collapse of peripheral soil bodies on construction can be avoided, and the safety of constructors is ensured.

In one embodiment of the above technical solution, the gap between the sleepers is filled with sand, and the center of the sleeper core coincides with the center line of the cutting edge.

In one embodiment, the specification of the sleeper is 16cm x 22cm x 250 cm;

the spacing of the cushion frame is 0.45 m.

In one embodiment of the technical scheme, the thickness of the brick moulding bed is 250mm, and the cutting edge is arranged at the position of 0.3m of the lower end of the brick moulding bed.

According to the technical scheme, in one implementation mode, drag hooks are arranged on the inner side of the template of the brick molding bed, and stress ribs are connected between the drag hooks.

In one embodiment of the above technical solution, the form of the brick molding bed is a wood form with a thickness of 15 mm;

the specification of the draw hook is [email protected] 600;

the stress rib is arranged in a double-layer bidirectional mode, and the specification of the stress rib is [email protected] 200.

In one embodiment of the technical scheme, a plurality of main keels which are transversely arranged are arranged on the outer side of a template of the brick moulding bed, and the main keels are arranged in parallel along the vertical direction;

and each main keel is provided with a pair of pulling screws, and the pair of pulling screws are used for connecting the main keels positioned at two sides of the template of the brick molding bed.

In one embodiment of the technical scheme, the distance between the main keels is 450mm, and the main keels are phi 48 x 3 steel pipes;

the specification of the counter-pulling screw is [email protected] x 450.

In one embodiment of the technical scheme, the outer side of a template of the brick molding bed is also provided with a secondary keel which is vertically arranged;

the secondary keel is 50mm multiplied by 100mm wood purlin, and the distance between the secondary keel and the wood purlin is 150 mm.

In one embodiment of the above technical solution, the soft soil foundation brick molding bed construction structure further includes an inclined strut, and the inclined strut is obliquely arranged between the secondary joist and the sand-bedding layer;

the bracing is the steel pipe that specification is phi 48 x 3.0, and its both ends are along horizontal interval 2 m.

In a second aspect, the present invention further provides a soft soil foundation brick forming die construction method for implementing any one of the above soft soil foundation brick forming die construction methods, including:

backfilling a soft soil area to be excavated with coarse sand to form a sand cushion layer, and setting off the sand cushion layer;

paving a sleeper on the sand cushion layer, leveling the sleeper, and arranging a cushion frame on the sleeper;

binding a brick moulding bed, fixing the brick moulding bed on one side of the cushion frame, and sinking the edge angle at the lower end of the brick moulding bed into the sand cushion layer through the sleeper;

pouring concrete in the brick bed mould to form mould concrete, and removing the mould.

Compared with the prior art, the soft soil foundation brick moulding bed construction structure and the construction method thereof consider the influence of unfavorable geological conditions, and aiming at the soil characteristics of low bearing capacity, high compressibility and poor water permeability of the soft soil foundation, the brick moulding bed does not need to treat the soft soil foundation and can be used as a fence to provide construction conditions for constructors; and earth retaining measures such as steel sheet piles are not needed, so that the influence of the collapse of peripheral soil bodies on construction can be avoided, and the safety of constructors is ensured. The soft soil foundation brick moulding bed construction structure and the construction method thereof have the characteristics of cost saving, simple process, high construction efficiency, construction period saving, safety, practicability and the like.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a soft soil foundation brick molding bed construction structure of the present invention.

Fig. 2 is a schematic perspective view of a concrete mold.

Fig. 3 is a schematic structural view of the mold concrete.

Fig. 4 is a schematic structural diagram of the drag hook and the stress bar.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like, referred to or may be referred to in this specification, are defined relative to their configuration, and are relative concepts. Therefore, it may be changed according to different positions and different use states. Therefore, these and other directional terms should not be construed as limiting terms.

The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of implementations consistent with certain aspects of the present disclosure.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Please refer to fig. 1-3. Fig. 1 is a schematic structural view of a soft soil foundation brick molding bed construction structure of the present invention. Fig. 2 is a schematic perspective view of a concrete mold. Fig. 3 is a schematic structural view of the mold concrete.

The invention relates to a soft soil foundation brick moulding bed construction structure, which comprises:

the sand cushion layer 1 is laid in an excavated soft soil backfill area;

the sleepers 2 are laid on the sand bedding layer 1;

the cushion frame 3 is arranged on the sleeper 2;

the brick moulding bed 4 is arranged on one side of the pad frame 3, and the lower end of the brick moulding bed is provided with a cutting edge which can sink into the sand pad layer 1 through the sleeper 2;

and the mould concrete 5 is formed by pouring concrete into the brick moulding bed 4.

The soft soil foundation brick moulding bed construction structure of the invention considers the influence of bad geological conditions, and aiming at the soil property characteristics of low bearing capacity, large compressibility and poor water permeability of the soft soil foundation, the brick moulding bed 4 does not need to process the soft soil foundation and can be used as a fence to provide construction conditions for constructors; and earth retaining measures such as steel sheet piles are not needed, so that the influence of the collapse of peripheral soil bodies on construction can be avoided, and the safety of constructors is ensured.

Specifically, the gaps among the sleepers 2 are filled with sand, and the centers of the sleepers coincide with the center line of the cutting edge.

Preferably, the dimension of said crosstie 2 is 16cm 22cm 250 cm.

The distance between the cushion frames 3 is 0.45 m.

It should be noted that the clear width and height inside the formwork of the brick moulding bed 4 are consistent with the plane size of the foundation member to be constructed.

Further, the thickness of the brick moulding bed 4 is 250mm, and the cutting edge is arranged at the position of 0.3m of the lower end of the brick moulding bed.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the retractor and the stress bar.

Preferably, the inner side of the template of the brick moulding bed 4 is provided with a draw hook 6, and a stress bar 7 is connected between the draw hooks 6.

Optionally, the form of the brick moulding bed 4 is a 15mm thick wooden form.

The specification of the draw hook 6 is [email protected] 600. [email protected] indicates that the draw hooks 6 have a diameter of 6mm and are arranged at a distance of 600 mm.

The stress rib 7 is arranged in a double-layer bidirectional mode, and the specification of the stress rib is [email protected] 200. [email protected] indicates that the stress ribs 7 have a diameter of 7mm and are arranged at a pitch of 200 mm.

Further, the outer side of the template of the brick moulding bed 4 is provided with a plurality of transversely arranged main keels 8, and the plurality of main keels 8 are arranged in parallel along the vertical direction.

Each main keel 8 group is provided with a pair of pulling screws 9, and the main keels 8 positioned at two sides of the template of the brick moulding bed 4 are connected by the pair of pulling screws 9.

Optionally, the distance between the main keels 8 is 450mm, and the main keels 8 are phi 48 × 3 steel pipes.

The specification of the counter-pulling screw 9 is [email protected] x 450. [email protected] x 450 denotes that the counter-pulling screws 9 have a diameter of 14mm and are arranged bidirectionally at a pitch of 450 mm.

Preferably, the outer side of the template of the brick moulding bed 4 is also provided with a vertically arranged secondary keel 10.

The secondary keel 10 is 50mm multiplied by 100mm wood purlin with the distance of 150 mm.

Further, soft soil foundation brick child mould construction structures still includes bracing 11, the slope of bracing 11 set up in the secondary joist 10 with between the sand bed 1.

The inclined strut 11 is a steel pipe with the specification of phi 48 x 3.0, and the horizontal distance between two ends of the steel pipe is 2 m.

In addition, the concrete is preferably C50 concrete.

The units of the length units not indicated above are all mm.

The concrete construction process of the soft soil foundation brick moulding bed construction structure comprises the following steps:

positioning and paying-off → cutting edge earthwork → laying a sand layer 1 → laying a sleeper 2 and a cushion frame 3 → tying a brick molding bed 4 reinforcing steel bar → erecting a mold → pouring a brick molding bed 4 in-mold concrete 5 → dismantling the brick molding bed 4.

The invention relates to a construction method of a soft soil foundation brick moulding bed, which is used for implementing the construction structure of the soft soil foundation brick moulding bed and comprises the following specific steps:

step 101, backfilling a soft soil area to be excavated with coarse sand to form a sand cushion layer 1, and paying off on the sand cushion layer 1.

Specifically, a soft soil area needing excavation is backfilled by coarse sand to a position above the water surface, so that workers can construct on the backfilling surface.

102, paving sleepers 2 on the sand cushion layer 1, leveling the sleepers 2, and arranging cushion frames 3 on the sleepers 2.

And paying off the sand cushion layer 1 after backfilling is completed, wherein the specific axis range is subjected to line snapping according to the axis of the base component.

The sleepers 2 and the bolster 3 are laid on the sand bed, the standard sleepers are adopted at 216cm x 22cm x 250cm, and the distance between the bolster 3 is 0.45 m. The top surfaces of the sleepers 2 are on the same horizontal plane, leveling is carried out by a level gauge, the height difference is preferably not more than 10mm, sand is filled among the sleepers 2, and the centers of the sleepers are coincided with the center lines of the blade feet.

103, binding the brick molding bed 4, and fixing the brick molding bed 4 on one side of the cushion frame 3, so that the edge angle at the lower end of the brick molding bed 4 sinks into the sand cushion layer 1 through the sleeper 2.

Specifically, the stress rib 7 of the brick moulding bed 4 adopts a [email protected] double-layer bidirectional arrangement. The draw hook 6 adopts [email protected] 600. The template of the brick moulding bed 4 adopts a wood template with the thickness of 15 mm. The main keel 8 adopts double steel pipes phi 48 x 3.0, the distance is 450mm, the main keel is transversely arranged, and the distance between the first main keel 8 and the ground is less than or equal to 200 mm. The secondary keel 10 adopts 50mm multiplied by 100mm wood purlin, the distance is 150mm, and the secondary keel is vertically arranged. M14 counter-pull screw rods [email protected] multiplied by 450mm are adopted for fixing, one inclined strut 11 of a steel pipe phi 48 x 3.0 is adopted in the vertical direction, and the distance between the two ends of the inclined strut 11 in the horizontal direction is 2M.

And 104, pouring concrete in the brick moulding bed 4 to form mould concrete 5, and removing the mould.

And finally, pouring C50 concrete to ensure that the concrete reaches a certain strength in advance, and removing the formwork after the strength is reached.

It should be noted that, the earth excavation of the large bearing platform is carried out by adopting the excavator on site, and because the geology in the range is the quicksand, if the underground water is pumped and drained by adopting a water pump in time in the earth excavation process, the brick moulding bed 4 sinks along with the excavation of the earth, and the iron shovel for manual work is adopted on site to cooperate with the earth excavation to ensure the uniform sinking, so that the surrounding earth can not collapse.

Compared with the prior art, the soft soil foundation brick moulding bed construction structure and the construction method thereof consider the influence of unfavorable geological conditions, and aiming at the soil characteristics of low bearing capacity, high compressibility and poor water permeability of the soft soil foundation, the brick moulding bed does not need to treat the soft soil foundation and can be used as a fence to provide construction conditions for constructors; and earth retaining measures such as steel sheet piles are not needed, so that the influence of the collapse of peripheral soil bodies on construction can be avoided, and the safety of constructors is ensured. The soft soil foundation brick moulding bed construction structure and the construction method thereof have the characteristics of cost saving, simple process, high construction efficiency, construction period saving, safety, practicability and the like.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.