KR101299686B1 - H beam with prestressed reinforced plate - Google Patents

H beam with prestressed reinforced plate Download PDF

Info

Publication number
KR101299686B1
KR101299686B1 KR1020110073364A KR20110073364A KR101299686B1 KR 101299686 B1 KR101299686 B1 KR 101299686B1 KR 1020110073364 A KR1020110073364 A KR 1020110073364A KR 20110073364 A KR20110073364 A KR 20110073364A KR 101299686 B1 KR101299686 B1 KR 101299686B1
Authority
KR
South Korea
Prior art keywords
plate
reinforcing plate
prestressed
coupled
present
Prior art date
Application number
KR1020110073364A
Other languages
Korean (ko)
Other versions
KR20130012274A (en
Inventor
남진호
Original Assignee
(주)맥스코퍼레이션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)맥스코퍼레이션 filed Critical (주)맥스코퍼레이션
Priority to KR1020110073364A priority Critical patent/KR101299686B1/en
Publication of KR20130012274A publication Critical patent/KR20130012274A/en
Application granted granted Critical
Publication of KR101299686B1 publication Critical patent/KR101299686B1/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0452—H- or I-shaped

Abstract

본발명은 프리스트레스 보강판이 결합된 H빔에 관한 것으로, H빔에 있어서, 상기 H빔(10)의 웨브 양쪽 부분에 철판 또는 유리섬유판재를 프리스트레스처리를 한 보강판(20)을 덧대어 결합하되, 상기 보강판(20)은 길이방향으로 곡선이 형성된 것으로, 볼록부가 상부 플랜지 내면에 접촉되며, 보강판의 양단은 하부 플랜지 내면에 접촉되는 것으로, 본발명은 프리스트레스 보강판이 결합된 H빔을 표준화 및 자동화할 수 있으므로 품질이 안정되고, 생산성이 높으며, H빔의 강도가 높아지는 현저한 효과가 있다.The present invention relates to an H-beam combined with a prestressed reinforcing plate, in the H-beam, the reinforcing plate 20 subjected to prestressing the iron plate or glass fiber sheet material to both sides of the web of the H-beam 10 to be bonded; The reinforcing plate 20 is curved in the longitudinal direction, and the convex portions are in contact with the inner surface of the upper flange, and both ends of the reinforcing plate are in contact with the inner surface of the lower flange. The present invention standardizes the H-beam to which the prestressed reinforcing plate is coupled. And since it can be automated, the quality is stable, productivity is high, and the intensity | strength of an H beam has the outstanding effect.

Description

프리스트레스 보강판이 결합된 Ｈ빔{H beam with prestressed reinforced plate}H beam with prestressed reinforced plate

본발명은 프리스트레스 보강판이 결합된 H빔에 관한 것으로, 보다 상세하게는 미리 프리스트레스를 가한 보강판을 H빔의 웨브 양측면에 덧대어 부착하는 프리스트레스 보강판이 결합된 H빔에 관한 것이다.The present invention relates to an H-beam combined with a prestressed reinforcing plate, and more particularly, to an H-beam in which a prestressed reinforcing plate for attaching a prestressed reinforcing plate is added to both sides of the web of the H-beam.

일반적으로 종래기술인 공개특허번호 10-2008-0099929호(공개일자 2008년11월14일)에는 콘크리트 빔몸체 내부에 강재 빔이 삽입되며, 하부 플렌지부에 프리스트레스 강선이 삽입되되, 강재 빔은 웨브부의 단부에 제 1 플렌지부가 형성된 ‘T’자형 빔으로 상기 웨브부의 끝단부가 상기 콘크리트 빔의 하부 플렌지부를 향하도록 삽입되는 형강 매입형 프리스트레스 빔이 개시되어 있다.In general, the prior art Patent Publication No. 10-2008-0099929 (published November 14, 2008) is a steel beam is inserted into the concrete beam body, prestressed steel wire is inserted into the lower flange, the steel beam is a web portion A beam-filled prestressed beam is disclosed in which an end portion of the web portion is inserted into a 'T'-shaped beam having a first flange portion formed at an end thereof so as to face the lower flange portion of the concrete beam.

등록특허공보 등록번호10-0511464호(2005년08월31일)에는 H빔의 상부 플랜지에 인장 브라켓을 양측단에 설치하고 강연선을 인장 브라켓에 관통시킨 후에 강연선을 인장하고 정착구를 이용하여 인장 브라켓에 정착하여 하향 솟음을 갖도록 제작한 플리플렉션 H빔과 프리스트레스를 도입한 플리플렉션 H빔 및 이를 이용한T형 교각 시공방법이 개시되어 있다.      In Korean Patent Publication No. 10-0511464 (August 31, 2005), tension brackets are installed at both ends of the upper flange of the H beam, the strands are penetrated through the tension brackets, and the strands are tensioned, and the tension brackets are used by using anchorages. Disclosed are a folded H beam manufactured by fixing to a top and a folded H beam having prestress, and a T-type bridge construction method using the same.

그러나 상기와 같은 종래의 프리스트레스 보강판이 결합된 H빔은 프리스트레스 보강판이 강재 내부에 삽입되거나, 플랜지에 설치되는 것으로, H빔의 강도가 현장에서 요구하는 만큼 증가되지 않는다는 문제점이 있었다.     However, the H beam combined with the conventional prestress reinforcement plate is a prestress reinforcement plate is inserted into the steel or installed in the flange, there was a problem that the strength of the H beam does not increase as required in the field.

따라서 본발명은 상기와 같은 문제점을 해결하고자 안출된 것으로서, 프리스트레스 보강판이 결합된 H빔을 표준화 및 자동화할 수 있으므로 품질이 안정되고, 생산성이 높으며, H빔의 강도가 높아지는 프리스트레스 보강판이 결합된 H빔을 제공하고자 하는 것이다.Therefore, the present invention has been made to solve the above problems, H can be standardized and automated H-beam combined with prestressed reinforcement plate is stable, high productivity, H-beam combined with prestressed reinforcement plate H strength is increased To provide a beam.

본발명은 프리스트레스 보강판이 결합된 H빔에 관한 것으로, H빔에 있어서, 상기 H빔(10)의 웨브 양쪽 부분에 철판 또는 유리섬유판재를 프리스트레스처리를 한 보강판(20)을 덧대어 결합하되, 상기 보강판(20)은 길이방향으로 곡선이 형성된 것으로, 볼록부가 상부 플랜지 내면에 접촉되며, 보강판의 양단은 하부 플랜지 내면에 접촉되는 것을 특징으로 한다.The present invention relates to an H-beam combined with a prestressed reinforcing plate, in the H-beam, the reinforcing plate 20 subjected to prestressing the iron plate or glass fiber sheet material to both sides of the web of the H-beam 10 to be bonded; The reinforcing plate 20 is curved in the longitudinal direction, and the convex portion is in contact with the inner surface of the upper flange, and both ends of the reinforcing plate are in contact with the inner surface of the lower flange.

본발명은 프리스트레스 보강판이 결합된 H빔을 표준화 및 자동화할 수 있으므로 품질이 안정되고, 생산성이 높으며, H빔의 강도가 높아지는 현저한 효과가 있다.The present invention can standardize and automate the H-beam combined with the prestressed reinforcement plate, so that the quality is stable, the productivity is high, and the strength of the H-beam is remarkable.

도 1은 본발명 프리스트레스 보강판이 결합된 H빔 사시도
도 2는 도 1의 정면도
도 3은 도 1의 측면도
도 4는 본발명 프리스트레스 보강판에 평판이 결합된 H빔 사시도
도 5는 도 4의 측면도
도 6은 본발명 프리스트레스 보강판에 평판이 결합된 다른 실시례 H빔 사시도
도 7은 도 6의 측면도
도 8은 본발명 프리스트레스 보강판 제작 설명도1 is a perspective view of the H-beam combined with the present invention prestress reinforcement plate
Fig. 2 is a front view of Fig. 1
Fig. 3 is a side view of Fig.
Figure 4 is a perspective view of the H-beam coupled plate to the present invention prestress reinforcement plate
5 is a side view of Fig.
Figure 6 is another embodiment H-beam perspective view of the plate coupled to the present invention prestress reinforcement plate
7 is a side view of FIG. 6
8 is an explanatory diagram of the present invention prestress reinforcement plate production

본발명은 프리스트레스 보강판이 결합된 H빔에 관한 것으로, H빔에 있어서, 상기 H빔(10)의 웨브 양쪽 부분에 철판 또는 유리섬유판재를 프리스트레스처리를 한 보강판(20)을 덧대어 결합하되, 상기 보강판(20)은 길이방향으로 곡선이 형성된 것으로, 볼록부가 상부 플랜지 내면에 접촉되며, 보강판의 양단은 하부 플랜지 내면에 접촉되는 것을 특징으로 한다.The present invention relates to an H-beam combined with a prestressed reinforcing plate, in the H-beam, the reinforcing plate 20 subjected to prestressing the iron plate or glass fiber sheet material to both sides of the web of the H-beam 10 to be bonded; The reinforcing plate 20 is curved in the longitudinal direction, and the convex portion is in contact with the inner surface of the upper flange, and both ends of the reinforcing plate are in contact with the inner surface of the lower flange.

또한, 상기 보강판(20)은 H빔(10)에 볼트너트체결 또는 용접에 의해 결합되는 것을 특징으로 한다.     In addition, the reinforcing plate 20 is characterized in that coupled to the H-beam 10 by bolt nut fastening or welding.

또한, 상기 보강판(20)은 철판 또는 유리섬유판재를 상하 롤러 사이에 넣고, 프리스트레스처리를 한 것을 특징으로 한다.     In addition, the reinforcing plate 20 is characterized in that the iron plate or glass fiber sheet material between the upper and lower rollers, pre-stressed.

본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다. 도 1은 본발명 프리스트레스 보강판이 결합된 H빔 사시도, 도 2는 도 1의 정면도, 도 3은 도 1의 측면도, 도 4는 본발명 프리스트레스 보강판에 평판이 결합된 H빔 사시도, 도 5는 도 4의 측면도, 도 6은 본발명 프리스트레스 보강판에 평판이 결합된 다른 실시례 H빔 사시도, 도 7은 도 6의 측면도, 도 8은 본발명 프리스트레스 보강판 제작 설명도이다.     The present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view of the H-beam coupled to the present invention prestressed reinforcing plate, Figure 2 is a front view of Figure 1, Figure 3 is a side view of Figure 1, Figure 4 is a perspective view of the H-beam coupled to the present invention prestressed reinforcement plate, Figure 5 4 is a side view of Figure 4, Figure 6 is another embodiment H-beam perspective view of the flat plate coupled to the present invention prestressed reinforcement plate, Figure 7 is a side view of Figure 6, Figure 8 is an explanatory view of the present invention prestress reinforcement plate production.

본발명은 프리스트레스 보강판이 결합된 H빔에 관한 것으로, H빔에 있어서, 상기 H빔(10)의 웨브 양쪽 부분에 철판을 프리스트레스처리를 한 보강판(20)을 덧대어 결합한다. 곧, 상하 플랜지 사이를 연결하는 웨브의 양쪽 모두에 철판을 프리스트레스처리를 한 보강판(20)을 덧대어 결합하는 것이다.     The present invention relates to an H beam to which a prestress reinforcement plate is coupled. In the H beam, a reinforcing plate 20 subjected to prestressing of an iron plate is bonded to both portions of the web of the H beam 10 by padding. In other words, the reinforcing plate 20 subjected to prestressing of the iron plate is padded on both sides of the web connecting the upper and lower flanges.

상기 보강판(20)은 길이방향으로 곡선이 형성된 것으로, 볼록부가 일측 플랜지 내면에 접촉되고, 보강판의 양단은 타측 플랜지 외면에 접촉된다. 그리고 상기 보강판은 H빔에 볼트너트체결 또는 용접에 의해 결합된다.     The reinforcing plate 20 is curved in the longitudinal direction, the convex portion is in contact with the inner surface of one flange, both ends of the reinforcing plate is in contact with the outer surface of the other flange. The reinforcement plate is coupled to the H beam by bolt nut fastening or welding.

그리고 상기 프리스트레스 보강판이 결합된 H빔을 설치할 경우에 있어서, 프리스트레스 보강판이 결합된 H빔 양단을 지지점을 사용하여 지지하는 양단지지보의 경우에는 보강판 볼록부가 위로 올라오는 방향으로 수평으로 설치하며, 프리스트레스 보강판이 결합된 H빔 일단만을 지지점을 사용하여 지지하는 외팔보의 경우에는 보강판 볼록부가 아래로 내려오는 방향으로 수평으로 설치한다.     And in the case of installing the H-beam coupled to the prestressed reinforcement plate, in the case of both ends of the support beam for supporting both ends of the H-beam coupled to the prestressed reinforcement plate using a support point, the reinforcement plate convex portion is installed horizontally in the direction upwards, In the case of the cantilever beam supporting only one end of the H-beam combined with the prestressed reinforcement plate using the support point, the reinforcement plate convex part is installed horizontally in the downward direction.

그리고 본발명은 필요에 따라서 상기 보강판에 보강판과 같은 재질의 평판을 덧대어서 강도를 더욱 보강할 수 있는 것으로, 상기 평판은 보강판에서 H빔 상부플랜지측에 가까운 부위에 덧대어 설치한다.     And the present invention is to reinforce the strength by adding a plate of the same material as the reinforcement plate on the reinforcement plate as needed, the plate is installed in the reinforcement plate to the portion near the upper side of the H-beam upper flange.

보강판의 재질은 철판 또는 유리섬유판재이다.     The material of the reinforcement plate is iron plate or fiberglass plate.

그리고 상기 보강판(20)을 프리스트레스처리하는 방법은 철판 또는 유리섬유판재를 상부롤러와 철판을 양단을 지지하는 두 개의 하부 롤러 사이에 넣고, 압력을 가하여 프리스트레스처리를 한다.     In the method of prestressing the reinforcing plate 20, an iron plate or a glass fiber sheet is placed between the upper roller and two lower rollers supporting both ends of the iron plate, and subjected to prestressing by applying pressure.

따라서 본발명은 프리스트레스 보강판이 결합된 H빔을 표준화 및 자동화할 수 있으므로 품질이 안정되고, 생산성이 높으며, H빔의 강도가 높아지는 현저한 효과가 있다.     Therefore, the present invention can standardize and automate the H-beam combined with the prestressed reinforcing plate, so that the quality is stable, the productivity is high, and the strength of the H-beam is remarkable.

10 : H빔 20 : 보강판
21 : 볼록부 30 : 평판10: H beam 20: reinforcement plate
21: convex portion 30: flat plate

Claims (3)

H빔(10)의 웨브 양쪽 부분에 철판 또는 유리섬유판재를 프리스트레스처리를 한 보강판(20)을 덧대어 결합하되, 상기 보강판(20)은 길이방향으로 곡선이 형성된 것으로, 볼록부가 상부 플랜지 내면에 접촉되며, 보강판의 양단은 하부 플랜지 내면에 접촉되는 것을 특징으로 하는 프리스트레스 보강판이 결합된 H빔에 있어서,
상기 보강판(20)은 H빔(10)에 볼트너트체결 또는 용접에 의해 결합되는 것이며,
상기 보강판(20)은 철판 또는 유리섬유판재를 상하 롤러 사이에 넣고, 프리스트레스처리를 한 것이며,
또한, 상기 보강판(20)이 결합된 H빔(10)에 보강판(20)과 같은 재질의 평판(30)을 덧대어서 강도를 더욱 보강하되, 상기 평판(30)은 보강판(20)에서 H빔(10) 상부플랜지측에 가까운 부위에 덧대어 설치하는 것을 특징으로 하는 프리스트레스 보강판이 결합된 H빔The reinforcing plate 20 subjected to prestressing of the iron plate or the glass fiber sheet is bonded to both sides of the web of the H beam 10, and the reinforcing plate 20 is curved in the longitudinal direction, and the convex portion is the upper flange. In the H-beam coupled to the prestressed reinforcement plate, which is in contact with the inner surface, both ends of the reinforcement plate is in contact with the inner surface of the lower flange,
The reinforcing plate 20 is to be coupled to the H beam 10 by bolt nut fastening or welding,
The reinforcement plate 20 is a steel plate or a glass fiber sheet between the upper and lower rollers, prestressed,
In addition, by adding a flat plate 30 of the same material as the reinforcing plate 20 to the H beam 10 coupled to the reinforcing plate 20 to further reinforce the strength, the flat plate 30 is the reinforcing plate 20 H beam 10 is coupled to the pre-stressed reinforcement plate, characterized in that installed in the pad near the upper flange side 삭제delete 삭제delete
KR1020110073364A 2011-07-25 2011-07-25 H beam with prestressed reinforced plate KR101299686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110073364A KR101299686B1 (en) 2011-07-25 2011-07-25 H beam with prestressed reinforced plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110073364A KR101299686B1 (en) 2011-07-25 2011-07-25 H beam with prestressed reinforced plate

Publications (2)

Publication Number Publication Date
KR20130012274A KR20130012274A (en) 2013-02-04
KR101299686B1 true KR101299686B1 (en) 2013-08-26

Family

ID=47893009

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110073364A KR101299686B1 (en) 2011-07-25 2011-07-25 H beam with prestressed reinforced plate

Country Status (1)

Country Link
KR (1) KR101299686B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648897A (en) * 2015-12-23 2016-06-08 李宏亮 H-type steel structure for bridge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101369860B1 (en) * 2013-04-08 2014-03-04 오영택 Steel plate girder for bridge
KR101664100B1 (en) * 2016-04-12 2016-10-11 주식회사 세흥 Prefabricated temporary bridge
KR102277137B1 (en) * 2020-11-16 2021-07-14 (주)신흥이앤지 Prestressed concrete girder and Construction Method of the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100555244B1 (en) * 2005-01-07 2006-03-03 노윤근 The bridge construction method of having used i beam for structure reinforcement and this to which rigidity increased
KR20060024851A (en) * 2004-09-15 2006-03-20 주식회사 브레인알앤디 Strong beam with connecting member
KR100734172B1 (en) * 2005-05-13 2007-07-02 정상욱 PC Beam

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060024851A (en) * 2004-09-15 2006-03-20 주식회사 브레인알앤디 Strong beam with connecting member
KR100555244B1 (en) * 2005-01-07 2006-03-03 노윤근 The bridge construction method of having used i beam for structure reinforcement and this to which rigidity increased
KR100734172B1 (en) * 2005-05-13 2007-07-02 정상욱 PC Beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648897A (en) * 2015-12-23 2016-06-08 李宏亮 H-type steel structure for bridge

Also Published As

Publication number Publication date
KR20130012274A (en) 2013-02-04

Similar Documents

Publication Publication Date Title
KR100888941B1 (en) Concrete-composite crossbeam and construction methods using the same
KR100882464B1 (en) Deck plate with support member
KR101299686B1 (en) H beam with prestressed reinforced plate
KR101141685B1 (en) Structural frame of pre-stressed steel pipe and it's manufacturing methode and non-uniformly crosssectional pre-stressed steel pipe girder by using it
KR101974884B1 (en) Device for reinforcing the bridge pier
KR20160015255A (en) Method for pre-stressing a steel structure, and steel structure pre-stressed using said method
KR101433064B1 (en) Composite beam using steel plate beam and tendon and the construction method therefor
KR100882341B1 (en) Manufacturing method of compositebeam with reinforced steel beam for stiffness and rhmen bridge manufacturing method using compositebeam with reinforced steel beam
KR101108788B1 (en) Method of manufacturing multi stage prestressed composite beam which composes precast concrete panel and steel girder and correction device used therein
KR101913069B1 (en) Prestressed Steel-Concrete Composite Girder and Method for Fabricating thereof
KR101868677B1 (en) Connection unit for coupling main steel girder and ancillary steel girder and, connection methods using the same
KR101244219B1 (en) Prestressed concrete beam, steel confined prestressed concrete girder using the same and manufacturing method thereof
KR101186273B1 (en) Manufacturing method for preflex composite beam girder of reinforced stiffness
KR101396440B1 (en) Hybrid beam with reinforced end portions
KR101248564B1 (en) Tendon setting method for pre tension typed psc-beam and psc beam thereby
KR101402384B1 (en) Steel frame girder having pressure plate and, construction method for the same
KR100840190B1 (en) I-beam segment connection method equipped with prestress steel synthetic concrete upper flange for continuous bridge
KR100648046B1 (en) Beam and Girder Reinforcing Apparatus using External Post-Tension and Reinforcing Method using the same
KR200386508Y1 (en) Prestressed steel beam composed by coupling the lower girder imtroduced with compressive force and the upper girder introduced with tensile force
KR20040091350A (en) Prestressed steel girder
KR102209530B1 (en) Manufacturing Method Prestressed Composite Girder using Self Reaction Bed And Rahmen Bridge
KR101184762B1 (en) Prestressed H-section steel beam
KR101259139B1 (en) Steel composite prestressed concrete beam and method of manufacturing the same
KR101664165B1 (en) Construction method of prestressed steel composite girder bridge
KR20120119284A (en) Assembly construction truss beam

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee