CN211773687U - Quick vibrationless excavation supporting construction of slot - Google Patents
Quick vibrationless excavation supporting construction of slot Download PDFInfo
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- CN211773687U CN211773687U CN201921187656.3U CN201921187656U CN211773687U CN 211773687 U CN211773687 U CN 211773687U CN 201921187656 U CN201921187656 U CN 201921187656U CN 211773687 U CN211773687 U CN 211773687U
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Abstract
The utility model provides a quick vibration-free excavation supporting structure for a groove, which comprises a shallow groove at the upper part of a design position of the groove, wherein the bottom of the shallow groove is used as an initial height to be vertically supported to the design height of the bottom of the supporting structure at positions corresponding to two sides of the groove; the top of the vertical support at the same side is connected through the enclosing purlin, and the enclosing purlins at the two sides are connected through the transverse supports. The utility model discloses effectively reduce supporting construction's the degree of depth of strutting, and can adopt conventional machinery such as excavator to carry out hard pressure fender pile, both reduced the requirement to equipment, greatly reduced again to close on the destruction that the structure arouses because of the vibration, improved the security. The supporting structure has the advantages of small disturbance, high efficiency, high construction progress, high safety and the like. And the depth and the width of the shallow trench can be adjusted according to the actual situation and geological conditions on site, so that the method has strong adaptability, large improvement space and wide popularization and application prospect.
Description
Technical Field
The utility model relates to a quick vibrationless excavation supporting construction of slot mainly is applied to city dense structures district municipal administration and cuts dirty pipeline slot safety support engineering.
Background
Municipal sewage interception pipeline excavation engineering is generally located in urban areas, structures distributed along pipelines are more, the space is limited, and pipeline construction is not suitable for slope excavation. Municipal administration sewage interception pipeline buries deeply and is 2 ~ 6m generally, must carry out foundation ditch support in sewage interception pipeline slot excavation construction, and the slot conventional support method generally adopts the steel sheet pile to protect. The piling mode of the steel sheet pile is divided into impact piling, vibration piling and static pressure piling. The impact type piling equipment comprises a free drop hammer, a steam hammer, an air hammer, a hydraulic hammer, a diesel hammer and the like, the piling mode is high in noise, the peripheral structures are greatly damaged by vibration generated in the impact process, the piling equipment is large in scale, the requirement of piling construction sites is wide, and the applicability is relatively narrow. The vibrating pile driving equipment is usually modified by an excavator, and the pile driving principle is that the pile body is pressed into the soil after the soil around the pile body is liquefied through the high-frequency vibration of a pile head; vibratory pile driving causes great vibratory damage to surrounding structures due to the high frequency vibration of the pile driving apparatus (about 3000 per minute). Static pressure piling hardly causes vibration damage to surrounding structures, but static pressure piling equipment is high in purchase cost, large in scale and relatively narrow in applicability due to the fact that construction site requirements are wider during piling. Of the three piling modes, vibration piling is commonly used in municipal engineering at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a quick vibrationless excavation supporting construction of slot can be under construction through noise, the less mode of vibration. Therefore, the utility model adopts the following technical scheme.
A groove rapid vibration-free excavation supporting structure is characterized by comprising a shallow groove at the upper part of a groove design position, wherein the depth of the shallow groove meets the requirement that the groove wall can keep self-stability, and the width of the shallow groove is determined according to the larger value of the working width and the design width of an excavator;
setting a vertical support to the designed height of the bottom of the supporting structure at positions corresponding to two sides of the groove by taking the bottom of the shallow groove as an initial height;
the top of the vertical support at the same side is connected through the enclosing purlin, and the enclosing purlins at the two sides are connected through the transverse supports.
Further, the vertical supports are made of section steel, and the selection range of the section steel comprises U-shaped Larsen steel sheet piles, H-shaped steel or I-shaped steel.
Furthermore, the upper end of the vertical support is provided with a hoisting hole for a steel wire rope to penetrate.
Further, the vertical supports are densely distributed on two sides of the groove.
Furthermore, the cross section of the shallow trench is trapezoidal.
The utility model provides a supporting construction can utilize the shallow trench that forms after the first excavation, through effectively reducing supporting construction's the support degree of depth, and can adopt conventional machinery such as excavator to carry out hard pressure fender pile, both reduced the requirement to equipment, the destruction that has significantly reduced again arouses because of the vibration near on the structure has improved the security. The supporting structure has the advantages of small disturbance, high efficiency, high construction progress, high safety and the like. And the depth and the width of the shallow trench can be adjusted according to the actual situation and geological conditions on site, so that the method has strong adaptability, large improvement space and wide popularization and application prospect.
Drawings
Fig. 1 is a schematic view of the construction process of the present invention, showing the structural state that the vertical support is being pressed in after the shallow trench is formed.
Fig. 2 is a schematic view of the supporting structure of the present invention.
Fig. 3 is a side cut view of the supporting structure of the present invention.
Fig. 4 is a plan view of the supporting structure of the present invention.
Wherein, 1, vertical support; 2. hoisting holes; 3. hard pressing construction equipment; 4. pre-burying a pipeline; 5. hoisting a steel wire rope; 6. enclosing purlins; 7. transversely supporting; 8. a perimeter structure; 9. side line excavation for the first time is indicated; 10. Excavating elevation for the first time; 11. excavating a design depth; 12. and excavating for the second time to a certain depth.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Reference is made to the accompanying drawings. The utility model provides a quick no vibration excavation supporting construction of slot, include in the shallow trench 100 of slot design position upper portion, the accessible excavates for the first time and forms, the degree of depth of shallow trench 100 satisfies that its slot wall can keep from steady, the width of shallow trench 100 is confirmed according to satisfying in excavator working width and the design width's the bigger value, and the width of slot 100 bottom often is bigger than the width of the slot of will digging (namely the distance between the vertical support of left and right sides);
setting vertical supports 1 to the designed height of the bottom of the supporting structure at positions corresponding to two sides of the groove by taking the bottom 10 of the shallow groove as an initial height;
the top of the vertical support 1 on the same side is connected through a surrounding purlin 6, and the surrounding purlins 6 on the two sides are connected through a transverse support 7.
The vertical supports 1 are made of section steel, and the selection range of the section steel comprises U-shaped Larsen steel sheet piles, H-shaped steel or I-shaped steel. The transverse support 7 can also adopt the section steel, and the surrounding purlin 6 can adopt the section steel or the steel pipe.
And the upper end of the vertical support is provided with a hoisting hole 2 for a steel wire rope 5 to penetrate. The hoisting holes 2 are connected with hoisting equipment through steel wire ropes 5, and the vertical supports can be conveniently pulled up after foundation pit construction is completed.
The vertical supports 1 are densely distributed on two sides of the groove.
The first excavation can be performed by adopting slope excavation or vertical excavation according to actual conditions such as site conditions, safe distances between structures 8 on two sides and the shallow trench 100, soil conditions and the like, the excavation is performed as deep as possible, the cross section of the excavated shallow trench 100 is preferably trapezoidal, the depth of the shallow trench 100 is generally less than 1.5-2 m, and the trench wall of the shallow trench is not supported by the vertical support 1.
When the bottom of the shallow trench 100 is used as a piling construction platform for piling construction, the piling depth and the static pressure in soil are effectively reduced, the vertical support 1 can be driven to the designed height of the bottom of the supporting structure by common equipment such as an excavator 3 and the like in a hard pressing piling mode, the designed height is generally lower than the bottom of a trench to be excavated, and the excavating head of the excavator is used as a hard pressing execution mechanism. Like this, can guarantee the safety of slot both sides for again make commonly used and ordinary slot excavation construction machinery promptly excavator 3 also can regard as the hard construction equipment of vertical braces, quick safe construction and need not to adopt expensive static pressure pile equipment. The hard-pressing pile driving basically depends on the hydraulic pressure of the excavator, the vertical support 1 is pressed downwards through the digging head of the excavator and is pressed into the soil body to the designed height of the bottom of the supporting structure, even if the digging head downwards strikes the vertical support 1, the vertical support does not generate high-frequency vibration like vibration type pile driving equipment, and the vertical support has little influence on the surrounding environment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention, which is not illustrated herein.
Claims (4)
1. A groove rapid vibration-free excavation supporting structure is characterized by comprising a shallow groove at the upper part of a groove design position, wherein the depth of the shallow groove meets the requirement that the groove wall can keep self-stability, the width of the shallow groove is determined according to the larger value of the working width and the design width of an excavator, and the cross section of the shallow groove is in a trapezoid shape;
setting a vertical support to the designed height of the bottom of the supporting structure at positions corresponding to two sides of the groove by taking the bottom of the shallow groove as an initial height;
the top of the vertical support at the same side is connected through the enclosing purlin, and the enclosing purlins at the two sides are connected through the transverse supports.
2. The rapid vibrationless trenching support structure of claim 1, wherein the vertical supports are formed of section steel, and the section steel is selected from a group consisting of U-shaped larsen steel sheet piles, H-shaped steel and i-shaped steel.
3. The rapid vibrationless trenching support structure of claim 1, wherein the vertical supports have a lifting hole at an upper end thereof for a wire rope to pass through.
4. A rapid vibrationless trenching support structure as claimed in claim 1, wherein the vertical supports are closely spaced on either side of the trench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187656.3U CN211773687U (en) | 2019-07-26 | 2019-07-26 | Quick vibrationless excavation supporting construction of slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187656.3U CN211773687U (en) | 2019-07-26 | 2019-07-26 | Quick vibrationless excavation supporting construction of slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211773687U true CN211773687U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921187656.3U Active CN211773687U (en) | 2019-07-26 | 2019-07-26 | Quick vibrationless excavation supporting construction of slot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211773687U (en) |
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2019
- 2019-07-26 CN CN201921187656.3U patent/CN211773687U/en active Active
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