CN212505680U - Rib beam type closed cutting U-shaped groove structure - Google Patents

Rib beam type closed cutting U-shaped groove structure Download PDF

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Publication number
CN212505680U
CN212505680U CN202021621240.0U CN202021621240U CN212505680U CN 212505680 U CN212505680 U CN 212505680U CN 202021621240 U CN202021621240 U CN 202021621240U CN 212505680 U CN212505680 U CN 212505680U
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bottom plate
side wall
rib beam
rib
shaped
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CN202021621240.0U
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应伟强
朱琳
韩磊
李东
陈晖�
栗志杰
杜传金
齐萱
郭彦彬
宋鑫
李晓龙
王欣
黎抒婕
陈青
王忠强
聂奥祥
杨思敏
贾岩
丁立亚
赵逸宁
陈娜
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Beijing General Municipal Engineering Design and Research Institute Co Ltd
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Beijing General Municipal Engineering Design and Research Institute Co Ltd
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Abstract

A rib beam type closed cutting U-shaped groove structure comprises side walls, a bottom plate, a counterweight pavement layer and a pavement structure; the side wall is provided with a vertical side wall rib beam, the bottom plate is provided with a horizontal bottom plate rib beam, and the side wall rib beam and two ends of the bottom plate rib beam are integrally connected to form a U-shaped rib beam; the plurality of U-shaped rib beams are parallel and equidistantly arranged in the direction vertical to the center line of the road; the side walls and the bottom plate are thin plates, and the thickness of the side walls and the thickness of the bottom plate are both thinner than that of the side wall rib beams and that of the bottom plate rib beams; the side wall connects each side wall rib beam and the bottom plate connects each bottom plate rib beam into an integral structure; the U-shaped rib beam, the side walls and the bottom plate are cast by concrete to form a closed reinforced concrete integral structure. The utility model discloses the effect is fallen to two of concrete and reinforcing bar quantity has been gained to for closing on important, risk source structures control basement elevation scheme provides technical method.

Description

Rib beam type closed cutting U-shaped groove structure
Technical Field
The utility model relates to a closed cutting building engineering technical field specifically provides a rib beam type seals cutting U type groove structure, is applicable to the higher cutting section of ground water level, belongs to and seals cutting U type groove structure.
Background
The existing closed cutting U-shaped groove structure is an integral structure consisting of a reinforced concrete bottom plate and side wall plates, and the self-weight of the structural bottom plate, the side wall plates, pavement and other accessory facilities is utilized to resist the supporting and floating effect of underground water. The mode that prior art adopted increase structure bottom plate, side wall plate thickness to offset buoyancy on the surface of underground water and soil and water pressure effect influence usually, and increase bottom plate thickness leads to the basement elevation to descend, causes the further increase of buoyancy on the surface of underground water and soil and water pressure, and technical engineering volume is big, with high costs, material utilization is low, and deep cutting section is especially obvious. Therefore, a solution is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cutting U type groove structure is sealed to rib beam formula, its aim at solve high groundwater level cutting section, increase bottom plate thickness and lead to the basement elevation to descend, cause the technical problem of the further increase of buoyancy on the groundwater and soil and water pressure.
The utility model discloses a realize by following technical scheme:
a rib beam type closed cutting U-shaped groove structure comprises side walls, a bottom plate, a counterweight pavement layer and a pavement structure; the side wall is provided with a vertical side wall rib beam, the bottom plate is provided with a horizontal bottom plate rib beam, and the side wall rib beam and two ends of the bottom plate rib beam are integrally connected to form a U-shaped rib beam; the plurality of U-shaped rib beams are arranged in parallel at equal intervals in a direction perpendicular to the center line of the road; the side wall and the bottom plate are thin plates, and the thicknesses of the side wall and the bottom plate are both thinner than those of the side wall rib beam and the bottom plate rib beam; the side wall connects each side wall rib beam and the bottom plate connects each bottom plate rib beam into an integral structure; the bottom plate bottom surface with bottom plate rib roof beam bottom surface parallel and level, the side wall medial surface with the side parallel and level of road one side of side wall rib roof beam, the side wall bottom surface is connected the bottom plate seals U type groove structure both sides, U type rib roof beam with side wall, bottom plate constitute for confined reinforced concrete overall structure through concrete placement U type groove structure.
The bottom plate rib beam and the upper part of the bottom plate are upwards sequentially provided with the counterweight pavement layer and the pavement structure.
The transverse width of the bottom plate is at least not less than the width of the U-shaped rib beam; the height of the side wall is at least not less than that of the side wall rib beam.
The bottom plate rib beam is in a strip shape, the thickness of the bottom plate rib beam is increased upwards when the thickness of the bottom plate rib beam is adjusted, and the width of the bottom plate rib beam is increased towards the front side and the rear side when the width of the bottom plate rib beam is adjusted; the side wall rib beam is in a plate strip shape, the outer flange of the side wall rib beam is gradually widened from top to bottom, the width of the side wall rib beam is increased towards the outer side when the width is adjusted, and the thickness of the side wall rib beam is increased towards the front side and the rear side when the thickness is adjusted.
The U-shaped rib beams are reinforced by adopting beam type reinforcing bars according to main stress components, the side walls and the bottom plate bodies are reinforced by common waterproof plates, and the reinforcing bar rate of the side walls and the bottom plate bodies is lower than that of the U-shaped rib beams.
Effect of the utility model
The utility model discloses the thick plate U type groove structure of the equal engineering condition of analogy has gained the two effects of falling of concrete and reinforcing bar quantity to for closing on important, risk source structure control basement elevation scheme provides technical method. When the height of the bottom plate rib beam is increased due to stress requirements, the bottom plate rib beam can be adjusted only in the counterweight pavement layer, the height is increased from the substrate to the pavement structure direction, the further increase of external load caused by the reduction of the height of the substrate is not needed, and the boundary condition in the optimization process is stable; the space outside the rib beam is used for applying a counterweight, so that the consumption of concrete is reduced; meanwhile, the excavation depth of the foundation pit can be reduced, and the construction difficulty and the influence on adjacent structures are reduced.
Drawings
FIG. 1 is a three-dimensional schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the rib beam reinforcement of the present invention;
FIG. 4 is a schematic view of the plate wall reinforcement of the present invention;
FIG. 5 is a schematic structural diagram of an example of the present invention;
FIG. 6 is a schematic view of the structure of the embodiment of the present invention at a lower water level;
FIG. 7 is a schematic view of the structure of the embodiment of the present invention at a higher water level;
description of the figure numbering: 1-bottom plate rib beam, 2-side wall rib beam, 3-bottom plate, 4-side wall, 5-counterweight pavement layer, 6-pavement structure, 7-low middle wall, 8-motor vehicle lane, 9-non-motor vehicle lane, 10-pedestrian path, U-shaped rib beam 100 and U-shaped groove structure 200. 101-bottom plate rib beam lower edge tension main rib, 102-bottom plate rib beam upper edge tension or compression reinforcing steel bar, 103-bottom plate rib beam side wall distribution reinforcing steel bar, 104-bottom plate rib beam closed hoop, 201-side wall rib beam outer edge tension main rib, 202-side wall rib beam inner edge tension or compression reinforcing steel bar, 203-side wall rib beam side wall distribution reinforcing steel bar, 204-side wall rib beam closed hoop, 301-bottom plate transverse stress main rib, 302-bottom plate longitudinal distribution reinforcing steel bar, 303-bottom plate hanging rib, 401-side wall plate transverse stress main rib, 402-side wall plate longitudinal distribution reinforcing steel bar and 403-side wall plate hanging rib.
Detailed Description
Referring to fig. 1 and 2, the rib beam type closed cutting U-shaped groove structure of the present invention comprises a side wall, a bottom plate, a counterweight pavement layer 5 and a pavement structure 6; the side wall 4 is provided with a vertical side wall rib beam 2, the bottom plate 3 is provided with a horizontal bottom plate rib beam 1, and the side wall rib beam 2 and the two ends of the bottom plate rib beam 1 are integrally connected to form a U-shaped rib beam 100; the plurality of U-shaped rib beams 100 are arranged in parallel at equal intervals in a direction perpendicular to the center line of the road; the side wall 4 and the bottom plate 3 are thin plates, and the thicknesses of the thin plates are thinner than those of the side wall rib beam 2 and the bottom plate rib beam 1; the side wall 4 connects each side wall rib beam 2 and the bottom plate 3 connects each bottom plate rib beam 1 into an integral structure; the bottom plate bottom surface with bottom plate rib roof beam bottom surface parallel and level, the side wall medial surface with the side parallel and level of the road one side of side wall rib roof beam, the side wall bottom surface is connected the bottom plate seals U type groove structure both sides, U type rib roof beam with side wall, bottom plate constitute for confined reinforced concrete overall structure through concrete placement U type groove structure 200.
The upper parts of the bottom plate rib beam 1 and the bottom plate 3 are upwards sequentially provided with the counterweight pavement layer 5 and the pavement structure 6.
The transverse width of the bottom plate 3 is at least not less than the width of the U-shaped rib beam 100; the height of the side wall 4 is at least not less than that of the side wall rib beam 2.
The bottom plate rib beam 1 is in a strip shape, the thickness of the bottom plate rib beam is increased upwards when the thickness of the bottom plate rib beam is adjusted, and the width of the bottom plate rib beam is increased towards the front side and the rear side when the width of the bottom plate rib beam is adjusted; the side wall rib beam is in a plate strip shape, the outer flange of the side wall rib beam is gradually widened from top to bottom, the width of the side wall rib beam 2 is increased towards the outer side when the width is adjusted, and the thickness of the side wall rib beam is increased towards the front side and the rear side when the thickness is adjusted.
The U-shaped rib beam 100 adopts beam type reinforcement according to a main stress component, the side wall 4 and the bottom plate body 3 are reinforced according to a common waterproof plate, and the reinforcement ratio of the side wall and the bottom plate body is lower than that of the U-shaped rib beam.
The following further description of the present invention:
1. materials: the utility model discloses bottom plate gird, side wall board, bottom plate are reinforced concrete structure.
2. The reinforcing mode of the bottom plate rib beam and the side wall rib beam is stress member beam type reinforcing, and the longitudinal reinforcing steel bar of the rib beam is as follows: the lower edge tension main rib 101 of the bottom plate rib beam, the upper edge tension or compression reinforcing steel bar 102 of the bottom plate rib beam, the side wall distribution reinforcing steel bar 103 of the bottom plate rib beam, the outer edge tension main rib 201 of the side wall rib beam, the inner edge tension or compression reinforcing steel bar 202 of the side wall rib beam and the side wall distribution reinforcing steel bar 203 of the side wall rib beam are arranged in parallel with the edge of the structure and transversely along the section of the road. Tension main rib: the lower edge of the bottom plate rib beam is provided with a main tension rib 101, the outer edge of the side wall rib beam is provided with a main tension rib 201, the lower edge of the bottom plate rib beam and the outer edge of the side wall rib beam are provided with main tension ribs, and the continuous through-length steel bars are connected by welding or mechanical sleeve buckling. The upper edge of a bottom plate rib beam and the inner edge of a side wall rib beam are provided with longitudinal tension or compression reinforcing steel bars, the upper edge of the bottom plate rib beam is provided with tension or compression reinforcing steel bars 102, the inner edge of the side wall rib beam is provided with tension or compression reinforcing steel bars 202, the side wall of the rib beam is provided with longitudinal distribution reinforcing steel bars, the side wall rib beam is provided with side wall distribution reinforcing steel bars 103 and side wall rib beam distribution reinforcing steel bars 203, the side wall rib beam longitudinal distribution reinforcing steel bars 202 and 203 are arranged to the top bottom of the rib beam in parallel with the outer edge of the rib beam, and the longitudinal reinforcing steel; the closed stirrups 104 and 204 are arranged in the cross section direction of the rib beam, and the stirrups are positioned on the outer sides of the longitudinal steel bars of the rib beam.
3. The reinforcing rib mode of the side wall plate and the bottom plate is plate type reinforcing rib: stress main reinforcements 301 and 401 which are parallel to the edges of the plates and are arranged in the range of the side wall plates and the bottom plates among the rib beams and are arranged along the cross section direction of the road are arranged, the bottom plate main reinforcements are arranged at the upper edge and the lower edge, the side wall plate main reinforcements are arranged at the inner edge and the outer edge, the main reinforcements are arranged on the outer layer, the inner layer is provided with through-length distributed reinforcements 302 and 402 which are arranged along the longitudinal direction of the road, and the stress main reinforcements 301 and 401 and the distributed reinforcements 302 and 402 in; the hanging ribs 303, 403 are provided in the direction perpendicular to the thickness direction.
4. The shape of the rib beam is as follows: the bottom plate rib beam is vertical to the bottom plate and is unfolded into a rectangular section, and is arranged at the same height and length of the bottom plate along the transverse direction of the road until reaching the inner edge line of the side wall plate; the side wall rib beam is vertical to the side wall and is unfolded into a rectangular section, and the side wall is continuously arranged in a height-increasing mode along the transverse direction of the road, is arranged at a position 50cm away from the top end of the side wall plate, and is arranged at the bottom plate; because of adopting concrete monolithic pouring, there is not boundary gap between bottom plate gird, side wall board, the bottom plate, realize respective function through the difference of arrangement of reinforcement, wherein the gird is whole continuous structure, and the both sides side wall board is the bottom plate gird with the bottom plate scope gird definition, and the both sides side wall board is the side wall gird with the external gird definition.
5. The connection structure is as follows: concrete among the bottom plate rib beam, the side wall plate and the bottom plate has no gap, and after the erection of the reinforcing steel bars is finished, the concrete is integrally poured; the rib beam steel bars are continuously arranged with the main tension bars at the outer edge of the side wall rib beam through the main tension bars at the lower edge of the bottom plate rib beam, and the steel bars at the upper edge of the bottom plate rib beam and the distributed steel bars at the two sides are deeply embedded into the side wall rib beam and the anchoring length is ensured, so that an integral rib beam stress member is formed; bottom plate, side wall board form whole steel reinforcement framework through vertically setting up logical long distribution reinforcing bar along the road with the rib roof beam, and whole closure after concreting.
6. The preparation method comprises the following steps: erecting binding bottom plate reinforcing steel bars, bottom plate rib beam reinforcing steel bars, side wall rib beam reinforcing steel bars and side wall plate reinforcing steel bars from bottom to top on site, and integrally pouring concrete after the reinforcing steel bars are erected.
7. The counterweight structure: the anti-floating structure is divided into three parts of a structure dead weight, an outer soil weight and a counterweight structure, wherein the structure dead weight is the dead weight of reinforced concrete structures such as a bottom plate, a bottom plate rib beam, a side wall plate and a side wall rib beam, the outer soil weight is the dead weight of backfill soil above the outer bottom plate of the side wall, and the counterweight structure is an engineering material which is above the bottom plate in the side wall and meets the requirements of road base surface layer materials.
8. Height adjustment of the rib beam: indicate the U groove structure rib height adjustment that different cutting degree of depth of same engineering corresponds, be relative design process, if dark cutting department rib roof beam sets up the height and is higher than shallow cutting department, this part height is adjusted in counter weight structural layer, need not to reduce bottom plate elevation and forms the bottom plate wrong platform. The heights of the bottom plate rib beams of different sections of the same project are determined after calculation according to actual boundary conditions, and the heights can not be adjusted after construction is finished.
The utility model discloses the people utility model discloses a set up the U type groove structure of rib roof beam at bottom plate, side wall, set up between the rib roof beam than the sheet metal body coupling for whole enclosed construction, replace high-thickness plate U type groove form such as tradition, on the basis of guaranteeing that the structure is anti to float stably and component atress performance, reduced material quantity such as structural concrete and reinforcing bar, practice thrift the construction cost, can avoid the excessive reduction of basement standard height simultaneously, on closing on the high program control of basement such as important, risk source structures, have good effect.
The utility model discloses constitute by bottom plate gird, side wall gird, bottom plate, side wall, through the setting of the horizontal bottom plate gird of perpendicular road central line direction, side wall gird, form the bulk rigidity of main atress frame and assurance structure, the gird passes through bottom plate and side wall board and connects, forms whole closed U type structure.
The rib beam type closed cutting U-shaped groove structure can be used for calculating and determining the structural size, the longitudinal distance and the combination form of the bottom plate rib beam and the side wall rib beam according to engineering practices such as cutting design depth, cutting width, field and natural conditions in a traditional calculation method, and is wide in application range. The rib beam type U-shaped groove structure takes a rib beam as a main stress component, and when the external load action changes, the structure stress requirements are adapted in a mode of adjusting the height, the width, the reinforcement ratio, the longitudinal spacing and the like of the rib beam, and the thickness of the integral component plate of the longitudinal section does not need to be increased.
Application examples
The main road of a certain city is made to pass through a ground railway (not shown in the figure) in a downward-penetrating mode, a longitudinal section low point of the road is arranged at the intersection position of the railway, the underground water level of a project planning field is high, the elevation of an anti-floating water-proof level is close to the ground surface, the structural design needs to solve the problems of structural stress and anti-floating at the same time, the downward-penetrating position is implemented by a railway department according to a closed frame structure, and the main road of the city is designed to be connected with the main road in a U-. The main road red line width is 60m, the bidirectional motor way 8, the non-motor way 9 and the pedestrian path 10 are arranged, the characteristic of wide road width is shown in figure 5, the effect influence of water buoyancy on the transverse bending moment of the bottom plate is further aggravated, a thicker plate body needs to be arranged in the prior art, and the consumption of reinforced concrete is larger. In the engineering construction process, the utility model discloses this kind of rib beam formula seals cutting U type groove structural style, is showing and has reduced the structure reinforced concrete material quantity, through closing on the calculation contrast of railway (not in the picture) same length section U type groove structure, the utility model discloses more the whole quantity of prior art concrete reduce 43.8%, the whole quantity of reinforcing bar reduces 21.4%, and bottom plate, side wall board body reinforcement rate are 0.6%, and rib beam roof beam body reinforcement rate is 1.1%. According to the contrast above, the setting up of rib makes the structural concrete volume reduce by a wide margin, under the prerequisite that satisfies structure bending resistance, shearing atress demand, the rib rate of reinforcement improves, and the plate body rate of reinforcement reduces, and the reinforcing bar is whole to be used the quantity and descends, and total reinforcing bar reduction rate is less than total concrete reduction rate.
The utility model discloses characteristics replace prior art U template with the U type rib roof beam that the interval set up and undertake the atress, U type rib roof beam is the main atress component of structure, and rib roof beam section size, rib roof beam interval, rib roof beam arrangement of reinforcement rate can be adjusted according to the atress demand. For two engineering comparison conditions of the same embedding depth in different water level areas and the different embedding depths in the same water level area, the underground water level has difference values from the structural bottom height, and when the height difference is increased, the adjustment can be carried out by reducing the arrangement distance of the rib beams, increasing the width of the rib beams, keeping the bottom height unchanged, heightening the rib beams upwards, and changing the height into a figure 6, and then changing the figure 7, improving the rib beam reinforcement ratio and the like. Use in this embodiment the utility model discloses, through the adjustment of rib width, height, interval, arrangement of reinforcement rate isoparametric, guaranteed that the structure is established the basement elevation and is not less than railway culvert basement elevation when establishing, reduced the influence of structure basement excavation to current situation railway structure basis to and the envelope scale relevant with the excavation degree of depth. And simultaneously, the utility model discloses an use and got the two effects that drop of atress component concrete and reinforcing bar quantity, the reduction of this part dead weight is complemented by counter weight pavement layer material to satisfy the counter weight demand of anti-floating design, the engineering material that accords with road base material requirement is adopted on counter weight pavement layer, and its material price is less than reinforced concrete structure. To sum up, the utility model discloses an use on guaranteeing the basis of U type groove structure performance, reach effects such as reduction engineering volume, reduction construction cost.

Claims (5)

1. A rib beam type closed cutting U-shaped groove structure comprises side walls, a bottom plate, a counterweight pavement layer and a pavement structure; the side wall structure is characterized in that the side wall (4) is provided with a vertically arranged side wall rib beam (2), the bottom plate (3) is provided with a horizontal bottom plate rib beam (1), and the side wall rib beam and two ends of the bottom plate rib beam are integrally connected to form a U-shaped rib beam (100); the plurality of U-shaped rib beams are arranged in parallel at equal intervals in a direction perpendicular to the center line of the road; the side wall and the bottom plate are thin plates, and the thicknesses of the side wall and the bottom plate are both thinner than those of the side wall rib beam and the bottom plate rib beam; the side wall connects each side wall rib beam and the bottom plate connects each bottom plate rib beam into an integral structure; the bottom plate bottom surface with bottom plate rib roof beam bottom surface parallel and level, the side wall medial surface with the side parallel and level of the road one side of side wall rib roof beam, the side wall bottom surface is connected the bottom plate seals U type groove structure both sides, U type rib roof beam with side wall, bottom plate constitute for confined reinforced concrete overall structure through concrete placement U type groove structure (200).
2. The rib beam type closed cutting U-shaped groove structure as claimed in claim 1, wherein the upper parts of the bottom plate rib beam (1) and the bottom plate (3) are sequentially provided with the counterweight pavement layer (5) and the pavement structure (6) upwards.
3. The ribbed beam-type closed cut U-shaped channel structure as claimed in claim 1, wherein the transverse width of said floor is at least not less than the width of said U-shaped rib; the height of the side wall is at least not less than that of the side wall rib beam.
4. The rib beam type closed cutting U-shaped groove structure as claimed in claim 1, wherein the bottom plate rib beam is in a plate strip shape, the thickness of the bottom plate rib beam is increased upwards when the thickness is adjusted, and the width of the bottom plate rib beam is increased towards the front side and the rear side when the width is adjusted; the side wall rib beam is in a plate strip shape, the outer flange of the side wall rib beam is gradually widened from top to bottom, the width of the side wall rib beam is increased towards the outer side when the width is adjusted, and the thickness of the side wall rib beam is increased towards the front side and the rear side when the thickness is adjusted.
5. The structure of a rib beam type closed cutting U-shaped groove as claimed in claim 1, wherein the U-shaped rib beam adopts beam type reinforcement according to main stress components, the side wall and the bottom plate body are reinforced according to common waterproof plates, and the reinforcement rate of the side wall and the bottom plate body is lower than that of the U-shaped rib beam.
CN202021621240.0U 2020-08-06 2020-08-06 Rib beam type closed cutting U-shaped groove structure Active CN212505680U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021621240.0U CN212505680U (en) 2020-08-06 2020-08-06 Rib beam type closed cutting U-shaped groove structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021621240.0U CN212505680U (en) 2020-08-06 2020-08-06 Rib beam type closed cutting U-shaped groove structure

Publications (1)

Publication Number Publication Date
CN212505680U true CN212505680U (en) 2021-02-09

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Application Number Title Priority Date Filing Date
CN202021621240.0U Active CN212505680U (en) 2020-08-06 2020-08-06 Rib beam type closed cutting U-shaped groove structure

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