CN204238224U - A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end - Google Patents
A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end Download PDFInfo
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- CN204238224U CN204238224U CN201420726066.4U CN201420726066U CN204238224U CN 204238224 U CN204238224 U CN 204238224U CN 201420726066 U CN201420726066 U CN 201420726066U CN 204238224 U CN204238224 U CN 204238224U
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- bracing members
- movable end
- anchoring
- construction
- voussoir
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Abstract
The utility model discloses a kind of inclined-plane anchoring self-locking list voussoir bracing members movable end, belong to the bracing members installing area of deep foundation pit construction, comprise the telescopic section of the draw-in groove with locking gad block, it is characterized in that: anchoring face, described draw-in groove two ends at least one side is inclined plane.Adopt new device----inclined-plane anchoring self-locking list voussoir bracing members movable end, overcome the shortcomings such as traditional construction speed is slow, loss of prestress large, construction quality difference is large, practical operation applying top power is difficult to calculated in advance, security risk is large, operation easier is large, construction cost is large, movable end collapsing length is long.Use this device, loss of prestress can be controlled preferably, comparatively accurately can apply the top power of bracing members, ensure that construction quality, accelerate construction speed, Shi Hanzhang process operation is simple, bracing members movable end auto-lock anchorage is firm, and construction safety is guaranteed, and also can not cause bracing members unstability, inefficacy because of accident collision after bracing members installs.
Description
Technical field
The utility model relates to one in deep foundation pit construction after bracing members erection, the movable end of a kind of efficient, safe anchoring after Shi Hanzhang, and the bracing members being applicable to all kinds of deep foundation pit construction is installed.
Background technology
In the process of carrying out deep pit digging, due to the soil pressure of foundation ditch surrounding, foundation pit enclosure structure can be caused to be out of shape and even to collapse, therefore need set up bracing members and carry out supporting in deep foundation ditch.Bracing members forms primarily of movable end, standard knot steel pipe, flange and fixed end.
Generally, the width of foundation ditch was determined in the space enclosing structure construction stage in early stage, bracing members is difficult to disposable accurately assembledly to put in place, need arrange the draw-in groove that one section of retractable regulates bracing members length in one end of bracing members, and this section of primary structure member is called for short movable end.Jack must be utilized after bracing members sets up to apply pre-jacking force adopt the anchoring of gad block, to prevent deformation of deep excavation at movable end by force request.Therefore movable end plays the double action regulating rod member length and apply pre-jacking force.
(1) traditional bracing members movable end design principle and the construction technology of Shi Hanzhang:
As shown in Figure 1, 2, traditional anchoring face, bracing members movable end draw-in groove two ends is all designed to vertical plane, and namely draw-in groove longitudinal section is rectangle; Regulate section to adopt and be no less than 2 pieces of gad blocks and some blooms composition.
Bracing members construction sequence is as follows:
1) according to the width of foundation ditch width, assembled good whole bracing members in advance, assembled good bracing members is primarily of movable end, standard knot steel pipe, flange and fixed end composition, and assembled good bracing members length is slightly shorter than required theoretical length.
2) by bracing members lifting install and temporary fixed.
3) jack be installed and apply top power by designing requirement.
4) with large hammering tight in the draw-in groove 2 pieces of gad blocks and some blooms being filled in telescopic section, and by spot welding between gad block and bloom, prevent from mutually sliding between gad block and bloom.
5) top power transforms on bracing members by jack oil return, removes jack.
(2) limitation of conventional steel support segmented end:
1) the power loss of anchoring top is large:
Due to traditional bracing members movable end Shi Hanzhang complete after, polylith gad block need be adopted to carry out anchoring, cause effective anchoring top power much smaller than the top power that jack applies, bracing members cannot play due effect, easily cause foundation pit deformation excessive, produce early warning, affect construction speed, cause potential safety hazard.Generally speaking, gad number of blocks is more, and the gap between gad block is larger, and after anchoring section is stressed, the plastic strain between gad block is larger, causes the pre-jacking force of effective anchoring fewer, and namely the pre-jacking force loss of jack applying is larger.On-the-spot test of many times shows: the actual top power being applied with 1000KN of jack, and after jack oil return, that the pressure of surveying bracing members has is 400KN, and what have is even only about 200KN.
2) effectively anchoring top power error is large:
Because anchored force loss is large, and the proportional difference of each loss is large, therefore is difficult to the top force that calculated in advance spendes the required applying of every root bracing members jack reality, causes site operation error large.
3) the actual top power that applies much larger than theoretical anchored force, must easily cause bracing members distortion, unstability:
For guaranteeing that bracing members can reach the anchoring pre-add top power of design, then must strengthen the pre-jacking force of jack during practical operation exponentially, if safety factor is less during bracing members design, the easy like this jack that causes is in the power process of applying top, the top power of jack exceedes the axle power that bracing members can bear, thus causes security incident.
4) easily collision comes off, losing efficacy causes security incident:
Because anchoring gad number of blocks is many and anchoring face is vertical plane, after bracing members installs, once the collision that meets accident in work progress, easily cause gad block to come off, and then cause bracing members to lose efficacy, cause security incident.
5) steel carves that block stress surface is little, local stress is large:
The movable end of bracing members need adopt at least 2 pieces of gad blocks to carry out anchoring, if execute-in-place is improper, very easily occurs that gad block point is stressed or line is stressed, causes steel to carve block local stress excessive, causes larger impact to security of foundation ditch construction.
6) labor intensive power is large:
When installing last block gad in the draw-in groove of movable end, sledgehammer need be adopted to impact with sudden force, and labor intensive is larger;
7) steel carve block cannot self-locking in draw-in groove, constructing operation difficulty is large:
Because gad block is inclined mouth type, need in fixing process to adopt a positive and a negative to install, if angle face angle is excessive, adjacent gad block can be caused mutually to slide up and down, cannot complete self-locking after Shi Hanzhang, scene of causing like this phenomenon of doing over again is serious.On-site construction operations difficulty is large.
8) along with the quantity of gad block increases, the free-extension extended length of bracing members movable end, weakens the uniaxial force of bracing members.
9) as can be seen from bracing members movable end figure, gad block anchoring face needs vertical through whole draw-in groove, and Rig up error steel is carved block and very easily come off, and causes potential safety hazard.
Utility model content
The purpose of this utility model is: for the limitation of traditional bracing members movable end, adopts inclined-plane anchoring self-locking list voussoir bracing members movable end, can guarantee that bracing members carries out self-locking and fixes after Shi Hanzhang; Utilize inclined-plane anchoring self-locking list voussoir movable end, effectively can reduce the loss of bracing members prestressing force, guarantee deep pit monitor; The actual top power applied differs less with the anchoring top power needed for theory, and the actual top power applied can relatively easily accurately be determined in advance; Shorten the free-extension length of bracing members movable end simultaneously, reduce slenderness ratio, guarantee that bracing members uniaxial force is stablized; Adopt inclined-plane anchoring self-locking list voussoir movable end, do not need to adopt sledgehammer to impact with sudden force, there will not be voussoir landing phenomenon, there will not be the mutual sliding phenomenon of voussoir yet, mounted bracing members collision resistance is also significantly strengthened, and bracing members will be caused to lose efficacy because of collision; Bracing members once can apply top power success.Thus can guarantee when accelerating the installation progress of bracing members to meet installation quality and using function requirement, and then reduce the input of material and ensure that construction safety, reduce construction cost.
The purpose of this utility model is realized by following technical proposals:
A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end, comprise the telescopic section of the draw-in groove with locking gad block, anchoring face, described draw-in groove two ends at least one side is inclined plane.
As selection, the one side in anchoring face, described draw-in groove two ends is inclined plane, and another side is vertical plane.
As further selection, described draw-in groove is the right-angled trapezium cross section of big upper and lower small mouth.
In the utility model, the effect of each part is as follows:
The draw-in groove of bracing members movable end locking gad block, in movable end process, directly this anchoring face, draw-in groove one end is processed as inclined-plane, be processed into the right-angled trapezium cross section of big upper and lower small mouth by draw-in groove, such anchoring gad block only needs one piece.The slope on this inclined-plane is determined according to the friction factor between steel and steel, to guarantee that block carved by steel can self-locked in draw-in groove, can not upward sliding after power conversion in top is born by bracing members by jack oil return.
Workflow of the present utility model:
According to the width of foundation ditch at installation on ground whole bracing members, be in place with crane.At the position hydraulic jack Shi Hanzhang step by step demarcated of bracing members movable end top pressure, after prestress application puts in place, the structure of the draw-in groove that stretches according to bracing members movable end, knocks in monolithic gad block with hand hammer and carries out self-locking.Whole process operations flow process is simple, safety, construction speed are fast.The prestressing force that bracing members applies because of the length of excavation of foundation pit open-assembly time, can not reduce the using function of bracing members, and then ensure that the safety of foundation ditch.
The beneficial effects of the utility model: adopt new device----inclined-plane anchoring self-locking list voussoir bracing members movable end, overcome the shortcomings such as traditional construction speed is slow, loss of prestress large, construction quality difference is large, practical operation applying top power is difficult to calculated in advance, security risk is large, operation easier is large, construction cost is large, movable end collapsing length is long.Use this device, loss of prestress can be controlled preferably, comparatively accurately can apply the top power of bracing members, ensure that construction quality, accelerate construction speed, Shi Hanzhang process operation is simple, bracing members movable end auto-lock anchorage is firm, and construction safety is guaranteed, and also can not cause bracing members unstability, inefficacy because of accident collision after bracing members installs.
Accompanying drawing explanation
Fig. 1 is traditional bracing members movable end structural representation;
Fig. 2 is traditional bracing members movable end anchoring schematic diagram;
Fig. 3 is the structural representation of the embodiment of the present application;
Fig. 4 is the anchoring schematic diagram of the embodiment of the present application;
In figure, 1 is telescopic section, and 2 is vertical anchoring face, and 3 is inclination anchoring face, and 4 is stiffener, and 5 is draw-in groove, and 6 is bloom, and 7 is gad block, and 8 is channel-section steel.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end, comprise the telescopic section 1 of the draw-in groove 5 with locking gad block 7, anchoring face, draw-in groove 5 two ends at least one side is inclined plane 3.As shown in this embodiment, the one side in anchoring face, draw-in groove 5 two ends is inclined plane 3, and another side is vertical plane 2.Shown in figure 3,4, draw-in groove 5 is the right-angled trapezium cross section of big upper and lower small mouth.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. an inclined-plane anchoring self-locking list voussoir bracing members movable end, comprises the telescopic section of the draw-in groove with locking gad block, it is characterized in that: anchoring face, described draw-in groove two ends at least one side is inclined plane.
2. inclined-plane anchoring self-locking list voussoir bracing members movable end as claimed in claim 1, is characterized in that: the one side in anchoring face, described draw-in groove two ends is inclined plane, and another side is vertical plane.
3. inclined-plane anchoring self-locking list voussoir bracing members movable end as claimed in claim 2, is characterized in that: described draw-in groove is the right-angled trapezium cross section of big upper and lower small mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726066.4U CN204238224U (en) | 2014-11-26 | 2014-11-26 | A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420726066.4U CN204238224U (en) | 2014-11-26 | 2014-11-26 | A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end |
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| Publication Number | Publication Date |
|---|---|
| CN204238224U true CN204238224U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420726066.4U Expired - Fee Related CN204238224U (en) | 2014-11-26 | 2014-11-26 | A kind of inclined-plane anchoring self-locking list voussoir bracing members movable end |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929134A (en) * | 2015-06-15 | 2015-09-23 | 北京工业大学 | Tapered wedge type adjustable device for foundation pit engineering inner support and construction method |
| CN104988931A (en) * | 2015-06-30 | 2015-10-21 | 北京工业大学 | Single supporting leg and clamping plate type flexible device for constructing temporary supports |
| CN106013194A (en) * | 2016-07-26 | 2016-10-12 | 中国五冶集团有限公司 | Adjustable cofferdam supporting system and cofferdam supporting method |
| CN109356168A (en) * | 2018-11-28 | 2019-02-19 | 苏州市轨道交通集团有限公司 | A kind of bracing members segmented head |
| CN110004941A (en) * | 2019-05-14 | 2019-07-12 | 戴向胜 | Mechanical lock movable end |
| CN110029675A (en) * | 2019-05-24 | 2019-07-19 | 戴向胜 | Assembled in foundation pit compensates bracing members |
| CN117026996A (en) * | 2023-08-04 | 2023-11-10 | 中铁一局集团市政环保工程有限公司 | Assembly type string beam steel support construction process |
-
2014
- 2014-11-26 CN CN201420726066.4U patent/CN204238224U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929134A (en) * | 2015-06-15 | 2015-09-23 | 北京工业大学 | Tapered wedge type adjustable device for foundation pit engineering inner support and construction method |
| CN104988931A (en) * | 2015-06-30 | 2015-10-21 | 北京工业大学 | Single supporting leg and clamping plate type flexible device for constructing temporary supports |
| CN106013194A (en) * | 2016-07-26 | 2016-10-12 | 中国五冶集团有限公司 | Adjustable cofferdam supporting system and cofferdam supporting method |
| CN106013194B (en) * | 2016-07-26 | 2019-04-23 | 中国五冶集团有限公司 | A kind of adjustable cofferdam support system and the method for realizing cofferdam support |
| CN109356168A (en) * | 2018-11-28 | 2019-02-19 | 苏州市轨道交通集团有限公司 | A kind of bracing members segmented head |
| CN110004941A (en) * | 2019-05-14 | 2019-07-12 | 戴向胜 | Mechanical lock movable end |
| CN110029675A (en) * | 2019-05-24 | 2019-07-19 | 戴向胜 | Assembled in foundation pit compensates bracing members |
| CN117026996A (en) * | 2023-08-04 | 2023-11-10 | 中铁一局集团市政环保工程有限公司 | Assembly type string beam steel support construction process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171126 |