CN202031039U - Stone old arch bridge reinforcing structure - Google Patents
Stone old arch bridge reinforcing structure Download PDFInfo
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- CN202031039U CN202031039U CN2011201172261U CN201120117226U CN202031039U CN 202031039 U CN202031039 U CN 202031039U CN 2011201172261 U CN2011201172261 U CN 2011201172261U CN 201120117226 U CN201120117226 U CN 201120117226U CN 202031039 U CN202031039 U CN 202031039U
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Abstract
The utility model discloses a stone old arch bridge reinforcing structure relating to a bridge reinforcing structure. The reinforcing structure comprises a stone arch bridge of a stone arch supported by a bridge pier in a connection manner, the arch soffit of the stone arch is adhered and fixedly anchored with a plurality of rib steel slats along the fly-past direction; the rib steel slats are parallel to each other at intervals; and both ends of each rib steel slat are extended below a springing line of the stone arch. The stone old arch bridge reinforcing structure is suitable for the requirement of quick reinforcement for bridges in project item construction, and is convenient and efficient in construction, short in time limit for project and low in cost without influencing the project item progress.
Description
Technical field
The utility model relates to a kind of bridge strengthening structure, relates in particular to the old arch bridge ruggedized construction of a kind of barnacle.
Background technology
China's arch bridge is built historical being of long duration, stone arch bridge because have easy construction, the advantages such as convenience, economy and durability of drawing materials, and highway construction is in early days generally adopted, and because technical condition and economic limitation, the common design standard is on the low side, can't bear passing through of various jumboes frequent in the engineering construction, vehicle.New extension is built the necessary component that pioneer road, suspension bridge almost are each project preliminary preparations, its processing scheme to the old arch bridge of barnacle is varied, and, in the prior art, mainly concentrate on following several to the Scheme of Strengthening of such bridge based on newly-built and reinforcing mode:
1. cover encircles (being the liner method): this method is implanted reinforcing bar and sprayed mortar and is formed overall structure by (descend) the edge linked network on arch ring, by increasing the way raising bearing capacity of main arch ring cross-section area.The advantage of this method is that difficulty of construction is little, and needed construction equipment is also simpler, and cheap, and construction period is also shorter.But difficulty is bigger when constructing in the time of the lower edge fluid concrete, and when having concrete construction probably, the basic cast of discovery concrete is not entered.Even cast is entered, also can exist in conjunction with uncompacted problem.This is because general thickening layer is all thinner, the concrete that pumping is entered vertical drop under action of gravity.Reinforcing bar is that shaped form, template are curved surface shaped, and the concrete of whereabouts just is deposited between reinforcing bar, template naturally.After smashing by the shake of plug-in type and attaching vibrator, concrete is leakiness still, and a large amount of concrete are deposited in the template sprue gate.Although there is not the problem of upper limb cast in upper limb (hogback) cast, and the area of newly-increased part is far away from neutral axis, the resistance moment that unit area provided is bigger, i.e. the cross section high efficiency.But the latter need remove superstructure, long construction period, and budget also strengthens.Two kinds of job practicess all will be set up bow member or support.
2. shorten the footpath method of striding: this method is by setting up template at the arch springing place, form battered leg by cast-in-situ concrete and be supported on the main arch circle, thereby shares stressed on the main arch circle and improve the supporting capacity of arch bridge.This method long construction period, and changed the mechanical characteristic of structure, reduced under-clearance, unfavorable for the arch bridge of crossing over the river, and cost and also higher to the requirement of construction.
3. change arch bridge superstructure method: this method is by removing the superstructure filler of arch bridge, and form overall structure by hollowcore slab and cast column in the arch bridge superstructure, the advantage of this method is to alleviate dead load, and make arch ring with superstructure, bear load jointly from superstructure, shortcoming be need suspend traffic and cost higher relatively.
4. the external prestressing way is set.This method is usually used in the reinforcing of beam bridge, and is more rare to the reinforcing of arch bridge, mainly is by pouring into a mould crossbeam between arch rib to the reinforcing way of double curvature arched bridge, external prestressing is anchored on the crossbeam and improves the supporting capacity of arch bridge.This method consolidation effect is better, but the cost height is also high to construction requirement, and the time that suspends traffic is also longer.
5. counterweight method: the counterweight method is reinforced arch bridge and is applicable to that generally intrinsic pressure line and arch axis line have certain deviation or bridge through back pressure line and the arch axis line situation about departing from of operation for many years.This method is improved the stress performance of structure by certain applies weight through the accurate position of calculating on main arch significantly thereby make arch axis line and pressure line coincide as far as possible.This method short construction period to the construction requirement height, and influences the overall appearance of bridge construction.
There is the long defective of the complicated curing time long in time limit of construction although traditional Cast-in-place concrete or injection concrete increasing section reinforcing method less expensive and performance are also reliable, be difficult on time satisfy, other reinforcement and strengthening method is not only long in time limit but also will suspend traffic more infeasible as alleviating methods such as dead load weight, arched girder combination.Traditional ruggedized construction and job practices, the development that can't satisfy economic technology presses for a kind of requirement of object of construction production to cost, efficient, duration of satisfying to low cost, high-quality, high efficiency requirement that object of construction production requires.
The utility model content
At the problem that above-mentioned prior art exists, the utility model purpose is to provide a kind of barnacle old arch bridge ruggedized construction, is fit to the quick reinforcing demand of object of construction production construction to bridge, and the construction convenient and efficient, the duration is short, cost is low, does not influence the object of construction production progress.
The technical solution of the utility model is: the old arch bridge ruggedized construction of barnacle, comprise the stone arch bridge that connects the stone arch that supports by bridge pier, wherein, the soffit of described stone arch is pasted also along the span direction, and anchoring has some rib steel laths, spaced and parallel between described each rib steel lath, and two ends all extend to below the stone arch springing line.
As preferably, described steel plate bar is made up of the continuous amalgamation of polylith steel plate.As preferably, described steel plate strip adoption epoxy mortar is pasted and is also used the expansion bolt anchoring.
Further, described epoxy mortar quality proportioning is: epoxy resin: curing compound: thinner: cement: quartz sand=100: 20: 15: 100: 150.Further, described epoxy resin is E44 type (E-44 is the trade mark of country, and old name is called 6101, and representing average epoxide number is 44/100, (0.41-0.47)); Described curing compound is the T-31 type; Described thinner is an anhydrous propanone.
As preferably, described stone arch both sides also are provided with the subarch that bottom pouring has steel concrete, and the subarch lower end is provided with linoleum.As preferably, described steel concrete is cloth top reinforcement in the concrete, the main reinforcement that is provided with along stone arch span direction wherein, and its upper end is anchored in the stone-laying of stone arch bridge, and linoleum is isolated between steel concrete lower end and the stone-laying.
The beneficial effects of the utility model are: the principle of effectively having used the flexible consolidation process of arch bridge, adopted the structure of soffit anchoring affixing steel plate to reinforce, easy construction, the duration is short, cost is low, this structure does not influence the normal driving of bridge in reinforcing process, reinforcing can reach expection reinforcing requirement for bearing capacity after finishing a week, has good economic benefit and social benefit.
Description of drawings
Fig. 1 strides barnacle arch bridge lateral view for two of existing band subarch;
Fig. 2 strides barnacle arch bridge lateral view for existing three;
Fig. 3 is the affixing steel plate bar side structure schematic diagram in the old arch bridge ruggedized construction of barnacle described in the utility model;
Fig. 4 is the positive expanded view of the affixing steel plate bar in the old arch bridge ruggedized construction of barnacle described in the utility model;
Fig. 5 is the affixing steel plate front constructional drawing in the old arch bridge ruggedized construction of barnacle described in the utility model;
Fig. 6 is the affixing steel plate side surface configurations figure in the old arch bridge ruggedized construction of barnacle described in the utility model;
Fig. 7 is the subarch ruggedized construction schematic diagram in the old arch bridge ruggedized construction of barnacle described in the utility model.
The specific embodiment
Reinforce at common stone arch bridge structure as shown in Figure 1, extremely shown in Figure 7 as Fig. 3, the old arch bridge ruggedized construction of a kind of barnacle, comprise the stone arch bridge that connects the stone arch 2 that supports by bridge pier 1, wherein, the soffit of described stone arch 2 has some rib steel laths 3 along stickup of span direction and anchoring, spaced and parallel between described each rib steel lath 3, and two ends all extend to below stone arch 2 springing lines.Whenever stride stone arch 2 three rib steel laths 3 all are set, steel plate bar 3 width are 80cm, and 3 clear spacings of both sides of the chest steel plate bar are 50cm, and the stickup scope is whole stone arch 2 soffits, and extend to the following 63cm of bridge pier 1 springing line.Steel plate bar 3 is made up of the 4 continuous amalgamations of polylith steel plate, and steel plate 4 adopts expansion bolt 5 anchorings, epoxy mortar 6 to paste.Stone arch 2 both sides of stone arch bridge also are provided with subarch 7.(being stone arch 2 apical margins) builds C30 steel concrete in subarch 7 bottoms, steel concrete is cloth top reinforcement in the concrete eight, concrete eight thickness is 30cm, main reinforcement 9 adopts Φ 22 reinforcing bars, spacing 20cm, main reinforcement 9 upper ends are anchored in the middle of the stone-laying 10 of stone arch bridge, and its anchorage length is not less than 20cm, adopt two-layer linoleum 11 to isolate between steel concrete lower end and the stone-laying 10.
In the foregoing description, as shown in Figure 5 and Figure 6, paste with steel plate 4 and adopt the A3 steel, steel plate 4 thickness 6mm are of a size of 63cm * 80cm, and producer cuts in advance, and boring.Anchoring is adopted Φ 16, steel plate 4 bore diameter 18mm with expansion bolt 5.Steel plate 4 adopts epoxy mortar 6 bonding with stone arch 2 soffit masonry faces, epoxy mortar 6 match ratios are (mass ratio): epoxy resin (6101-E44, epoxide number: 0.41～0.47): curing compound (T-31 amine): thinner (anhydrous propanone): cement: quartz sand=100: 20: 15: 100: 150.As shown in Figure 7, subarch 7 bottom pourings have steel concrete to reinforce, steel concrete is cloth top reinforcement in the concrete eight, the main reinforcement 9 that is provided with along stone arch 2 span directions wherein, main reinforcement 9 adopts Φ 22 screw threads, laterally adopts Φ 14 reinforcing bars 12 to connect, and main reinforcement 9 upper ends adopt the method anchor of mortar anchoring to stone-laying 10, does not handle for there being hinge the lower end, adopts two-layer malthoid 11 and stone-laying 10 to isolate.
The utility model is not limited to above-mentioned embodiment, and those skilled in the art made to any conspicuous improvement of above-mentioned embodiment or change, can not exceed the protection domain of design of the present utility model and claims.
Claims (3)
1. the old arch bridge ruggedized construction of barnacle, comprise the stone arch bridge that connects the stone arch that supports by bridge pier, it is characterized in that: the soffit of described stone arch has some rib steel laths along stickup of span direction and anchoring, spaced and parallel between described each rib steel lath, and two ends all extend to below the stone arch springing line.
2. the old arch bridge ruggedized construction of barnacle according to claim 1 is characterized in that: described steel plate bar is made up of the continuous amalgamation of polylith steel plate.
3. the old arch bridge ruggedized construction of barnacle according to claim 1 is characterized in that: described stone arch both sides also are provided with the subarch that bottom pouring has steel concrete, and the subarch lower end is provided with linoleum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201172261U CN202031039U (en) | 2011-04-20 | 2011-04-20 | Stone old arch bridge reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201172261U CN202031039U (en) | 2011-04-20 | 2011-04-20 | Stone old arch bridge reinforcing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031039U true CN202031039U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201172261U Expired - Lifetime CN202031039U (en) | 2011-04-20 | 2011-04-20 | Stone old arch bridge reinforcing structure |
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| CN (1) | CN202031039U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397604A (en) * | 2013-07-19 | 2013-11-20 | 重庆交通大学 | Stone arch bridge structure compositely strengthened by aid of grooved arch ribs |
| CN113605260A (en) * | 2021-08-24 | 2021-11-05 | 云南航天工程物探检测股份有限公司 | Method for reinforcing stone arch bridge by adopting steel fiber self-stress concrete |
-
2011
- 2011-04-20 CN CN2011201172261U patent/CN202031039U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397604A (en) * | 2013-07-19 | 2013-11-20 | 重庆交通大学 | Stone arch bridge structure compositely strengthened by aid of grooved arch ribs |
| CN103397604B (en) * | 2013-07-19 | 2016-06-08 | 重庆交通大学 | Construct with the stone arch bridge of flute profile arch rib composite strengthening |
| CN113605260A (en) * | 2021-08-24 | 2021-11-05 | 云南航天工程物探检测股份有限公司 | Method for reinforcing stone arch bridge by adopting steel fiber self-stress concrete |
| CN113605260B (en) * | 2021-08-24 | 2022-10-18 | 云南航天工程物探检测股份有限公司 | Method for reinforcing stone arch bridge by adopting steel fiber self-stress concrete |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |