diff --git a/example/build_repo_example/main.go b/example/build_repo_example/main.go
index 0aaba24..f542de0 100644
--- a/example/build_repo_example/main.go
+++ b/example/build_repo_example/main.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"log"
 
 	"joylink.club/rtss-core/example/data_proto"
 	modelimpl "joylink.club/rtss-core/example/model_impl"
@@ -33,7 +34,7 @@ func main() {
 			continue
 		}
 		dataMapping.SectionDataMap[section.Common.Id] = section
-		uid := getSectionUid(section, belongStation)
+		uid := getSectionUid(section, belongStation, dataMapping.GetLineInfo())
 		dataMapping.AddIdMapping(repository.NewIdMapping(section.Common.Id, uid))
 		sectionModel := model.NewSection(uid)
 		repo1.SectionMap[uid] = &modelimpl.Section{SectionImpl: sectionModel}
@@ -47,7 +48,7 @@ func main() {
 			continue
 		}
 		dataMapping.TurnoutDataMap[turnout.Common.Id] = turnout
-		uid := getTurnoutUid(turnout, belongStation)
+		uid := getTurnoutUid(turnout, belongStation, dataMapping.GetLineInfo())
 		dataMapping.AddIdMapping(repository.NewIdMapping(turnout.Common.Id, uid))
 		turnoutModel := model.NewTurnout(uid)
 		repo1.TurnoutMap[uid] = &modelimpl.Turnout{TurnoutImpl: turnoutModel}
@@ -57,10 +58,34 @@ func main() {
 	buildSectionRelationships(dataMapping, repo1)
 	// 构建道岔关系
 	buildTurnoutRelationships(dataMapping, repo1)
-	// 检查通道连接关系
+	// 检查区段、道岔通道连接关系
 	err := repo1.CheckPipeLink()
 	if err != nil {
-		fmt.Println(err)
+		log.Println(err)
+	} else {
+		log.Println("区段、道岔连接关系检查通过")
+	}
+	// 构建link/linknode
+	buildLinkNode(repo1)
+}
+
+func buildLinkNode(repo1 *repository.Repository) {
+	passedSectionMap := make(map[string]struct{})
+	for _, turnout := range repo1.TurnoutMap {
+		walkToNextTurnout(turnout, model.PipePortA, passedSectionMap)
+		break // 从一个道岔遍历所有区段、道岔
+	}
+}
+
+func walkToNextTurnout(turnout *modelimpl.Turnout, port model.PipePort, passedSectionMap map[string]struct{}) (*modelimpl.Turnout, model.PipePort) {
+	plink := turnout.GetLinkedElement(port)
+	if plink == nil {
+		return nil, model.PipePortA
+	}
+	for {
+		if plink.Pipe.IsThreePorts() {
+			return plink.Pipe.(*modelimpl.Turnout), plink.Port
+		}
 	}
 }
 
@@ -148,10 +173,10 @@ func convertPort(port data_proto.RelatedRef_DevicePort) model.PipePort {
 	panic(fmt.Errorf("未知的数据关联端口类型: %v", port))
 }
 
-func getSectionUid(section *data_proto.Section, belongStation *data_proto.Station) string {
-	return belongStation.Code + "-" + section.Code
+func getSectionUid(section *data_proto.Section, belongStation *data_proto.Station, lineInfo string) string {
+	return fmt.Sprintf("%s/%s/%s", lineInfo, belongStation.Code, section.Code)
 }
 
-func getTurnoutUid(turnout *data_proto.Turnout, belongStation *data_proto.Station) string {
-	return belongStation.Code + "-" + turnout.Code
+func getTurnoutUid(turnout *data_proto.Turnout, belongStation *data_proto.Station, lineInfo string) string {
+	return fmt.Sprintf("%s/%s/%s", lineInfo, belongStation.Code, turnout.Code)
 }
diff --git a/example/repository/repo.go b/example/repository/repo.go
index 581ef5b..9fe972e 100644
--- a/example/repository/repo.go
+++ b/example/repository/repo.go
@@ -2,6 +2,7 @@ package repository
 
 import (
 	"errors"
+	"fmt"
 
 	"joylink.club/rtss-core/example/data_proto"
 	modelimpl "joylink.club/rtss-core/example/model_impl"
@@ -37,6 +38,11 @@ func (d *DataMapping) AddIdMapping(idMapping *IdMapping) {
 	d.UidMappingMap[idMapping.Uid] = idMapping
 }
 
+func (d *DataMapping) GetLineInfo() string {
+	lineInfo := d.RtssGraphicStorage.UniqueIdPrefix
+	return fmt.Sprintf("%s%s", lineInfo.City, lineInfo.LineId)
+}
+
 func NewDataMapping(id string, storage *data_proto.RtssGraphicStorage) *DataMapping {
 	return &DataMapping{
 		id:                 id,
diff --git a/model/link.go b/model/link.go
index 8b05736..f8e8b14 100644
--- a/model/link.go
+++ b/model/link.go
@@ -19,71 +19,36 @@ var _ Link = (*LinkImpl)(nil)
 var _ LinkNode = (*LinkNodeImpl)(nil)
 
 type LinkImpl struct {
-	uid        string
-	paLinkNode *PipeLink
-	pbLinkNode *PipeLink
+	*TwoPortsPipeElement
 }
 
 type LinkNodeImpl struct {
-	turnout    Turnout
-	paPipeLink *PipeLink
-	pbPipeLink *PipeLink
-	pcPipeLink *PipeLink
+	turnout Turnout
+	*ThreePortsPipeElement
 }
 
 func NewLink(nodea LinkNode, nodeb LinkNode) Link {
 	uid := buildLinkUid(nodea, nodeb)
 	return &LinkImpl{
-		uid: uid,
+		TwoPortsPipeElement: &TwoPortsPipeElement{
+			uid: uid,
+		},
 	}
 }
 
 func NewLinkNode(turnout Turnout) LinkNode {
 	return &LinkNodeImpl{
 		turnout: turnout,
+		ThreePortsPipeElement: &ThreePortsPipeElement{
+			uid: turnout.Uid(),
+		},
 	}
 }
 
-func (l *LinkImpl) Uid() string {
-	return l.uid
-}
-
-func (l *LinkImpl) Ports() []PipePort {
-	return twoPorts
-}
-
-func (l *LinkImpl) GetLinkedElement(port PipePort) *PipeLink {
-	if port == PipePortA {
-		return l.paLinkNode
-	} else if port == PipePortB {
-		return l.pbLinkNode
-	}
-	return nil
-}
-
-func (n *LinkNodeImpl) Uid() string {
-	return n.turnout.Uid()
-}
-
 func (n *LinkNodeImpl) Turnout() Turnout {
 	return n.turnout
 }
 
-func (n *LinkNodeImpl) Ports() []PipePort {
-	return threePorts
-}
-
-func (n *LinkNodeImpl) GetLinkedElement(port PipePort) *PipeLink {
-	if port == PipePortA {
-		return n.paPipeLink
-	} else if port == PipePortB {
-		return n.pbPipeLink
-	} else if port == PipePortC {
-		return n.pcPipeLink
-	}
-	return nil
-}
-
 func buildLinkUid(nodea LinkNode, nodeb LinkNode) string {
 	if nodea == nil && nodeb == nil {
 		panic("构造link Uid错误: nodea和nodeb不能同时为空")
diff --git a/model/model.go b/model/model.go
index 2cab843..3ec9d63 100644
--- a/model/model.go
+++ b/model/model.go
@@ -1,5 +1,9 @@
 package model
 
+import (
+	"fmt"
+)
+
 type RtssModel interface {
 	// RtssModel unique id
 	Uid() string
@@ -49,20 +53,60 @@ type PipeElement interface {
 	RtssModel
 	// 获取通道端口
 	Ports() []PipePort
+	IsTwoPorts() bool
+	IsThreePorts() bool
 	// 获取指定端口连接的通道连接关系
 	GetLinkedElement(port PipePort) *PipeLink
 }
 
+func checkPipePortLink(pe PipeElement, port PipePort, pipeLink *PipeLink) error {
+	if pipeLink == nil {
+		return nil
+	}
+	plink := pipeLink.Pipe.GetLinkedElement(pipeLink.Port)
+	if plink == nil {
+		return fmt.Errorf("通道端口{uid=%s, port=%s}关联通道端口{uid=%s, port=%s},但关联通道的对应端口却未关联通道端口", pe.Uid(), port, pipeLink.Pipe.Uid(), pipeLink.Port)
+	} else if plink.Pipe.Uid() != pe.Uid() || plink.Port != port {
+		return fmt.Errorf("通道端口{uid=%s, port=%s}关联通道端口{uid=%s, port=%s},但关联通道的对应端口却关联了其他通道端口: {uid=%s, port=%s}", pe.Uid(), port, pipeLink.Pipe.Uid(), pipeLink.Port,
+			plink.Pipe.Uid(), plink.Port)
+	}
+	return nil
+}
+
+var _ PipeElement = (*TwoPortsPipeElement)(nil)
+
+// 两端口的线性通道元素
 type TwoPortsPipeElement struct {
 	uid        string
 	paPipeLink *PipeLink
 	pbPipeLink *PipeLink
 }
 
+func (t *TwoPortsPipeElement) Uid() string {
+	return t.uid
+}
+
 func (t *TwoPortsPipeElement) Ports() []PipePort {
 	return twoPorts
 }
 
+func (t *TwoPortsPipeElement) IsTwoPorts() bool {
+	return true
+}
+
+func (t *TwoPortsPipeElement) IsThreePorts() bool {
+	return false
+}
+
+func (s *TwoPortsPipeElement) GetLinkedElement(port PipePort) *PipeLink {
+	if port == PipePortA {
+		return s.paPipeLink
+	} else if port == PipePortB {
+		return s.pbPipeLink
+	}
+	return nil
+}
+
 func (t *TwoPortsPipeElement) OppositePipeLink(port PipePort) PipeLink {
 	if port == PipePortA {
 		return *t.pbPipeLink
@@ -70,8 +114,98 @@ func (t *TwoPortsPipeElement) OppositePipeLink(port PipePort) PipeLink {
 	return *t.paPipeLink
 }
 
-type ThreePortsPipeElement struct{}
+func (s *TwoPortsPipeElement) SetLinkedElement(port PipePort, pipeLink *PipeLink) error {
+	if port == PipePortA {
+		if s.paPipeLink != nil {
+			return fmt.Errorf("区段uid=%s端口A已经设置关联元素: {uid=%s, port=%s}", s.uid, s.paPipeLink.Pipe.Uid(), s.paPipeLink.Port)
+		}
+		s.paPipeLink = pipeLink
+	} else if port == PipePortB {
+		if s.pbPipeLink != nil {
+			return fmt.Errorf("区段uid=%s端口B已经设置关联元素: {uid=%s, port=%s}", s.uid, s.pbPipeLink.Pipe.Uid(), s.pbPipeLink.Port)
+		}
+		s.pbPipeLink = pipeLink
+	} else {
+		return fmt.Errorf("区段uid=%s设置关联元素端口错误,不支持C端口", s.uid)
+	}
+	return nil
+}
+
+func (s *TwoPortsPipeElement) CheckPipeLink() error {
+	err := checkPipePortLink(s, PipePortA, s.paPipeLink)
+	if err != nil {
+		return err
+	}
+	err = checkPipePortLink(s, PipePortB, s.pbPipeLink)
+	return err
+}
+
+var _ PipeElement = (*ThreePortsPipeElement)(nil)
+
+// 三端口的通道元素
+type ThreePortsPipeElement struct {
+	uid        string
+	paPipeLink *PipeLink
+	pbPipeLink *PipeLink
+	pcPipeLink *PipeLink
+}
+
+func (t *ThreePortsPipeElement) Uid() string {
+	return t.uid
+}
 
 func (t *ThreePortsPipeElement) Ports() []PipePort {
 	return threePorts
 }
+
+func (t *ThreePortsPipeElement) IsTwoPorts() bool {
+	return false
+}
+
+func (t *ThreePortsPipeElement) IsThreePorts() bool {
+	return true
+}
+
+func (t *ThreePortsPipeElement) GetLinkedElement(port PipePort) *PipeLink {
+	if port == PipePortA {
+		return t.paPipeLink
+	} else if port == PipePortB {
+		return t.pbPipeLink
+	} else if port == PipePortC {
+		return t.pcPipeLink
+	}
+	return nil
+}
+
+func (t *ThreePortsPipeElement) SetLinkedElement(port PipePort, pipeLink *PipeLink) error {
+	if port == PipePortA {
+		if t.paPipeLink != nil {
+			return fmt.Errorf("道岔uid=%s端口A已经设置关联元素: {uid=%s, port=%s}", t.uid, t.paPipeLink.Pipe.Uid(), t.paPipeLink.Port)
+		}
+		t.paPipeLink = pipeLink
+	} else if port == PipePortB {
+		if t.pbPipeLink != nil {
+			return fmt.Errorf("道岔uid=%s端口B已经设置关联元素: {uid=%s, port=%s}", t.uid, t.pbPipeLink.Pipe.Uid(), t.pbPipeLink.Port)
+		}
+		t.pbPipeLink = pipeLink
+	} else if port == PipePortC {
+		if t.pcPipeLink != nil {
+			return fmt.Errorf("道岔uid=%s端口C已经设置关联元素: {uid=%s, port=%s}", t.uid, t.pcPipeLink.Pipe.Uid(), t.pcPipeLink.Port)
+		}
+		t.pcPipeLink = pipeLink
+	}
+	return nil
+}
+
+func (t *ThreePortsPipeElement) CheckPipeLink() error {
+	err := checkPipePortLink(t, PipePortA, t.paPipeLink)
+	if err != nil {
+		return err
+	}
+	err = checkPipePortLink(t, PipePortB, t.pbPipeLink)
+	if err != nil {
+		return err
+	}
+	err = checkPipePortLink(t, PipePortC, t.pcPipeLink)
+	return err
+}
diff --git a/model/section.go b/model/section.go
index 5779c24..4642f87 100644
--- a/model/section.go
+++ b/model/section.go
@@ -1,67 +1,20 @@
 package model
 
-import (
-	"fmt"
-)
-
 // 区段
 type Section interface {
 	PipeElement
 }
 
 type SectionImpl struct {
-	uid        string
-	paPipeLink *PipeLink
-	pbPipeLink *PipeLink
+	*TwoPortsPipeElement
 }
 
 var _ Section = (*SectionImpl)(nil)
 
 func NewSection(uid string) *SectionImpl {
 	return &SectionImpl{
-		uid: uid,
+		TwoPortsPipeElement: &TwoPortsPipeElement{
+			uid: uid,
+		},
 	}
 }
-
-func (s *SectionImpl) SetLinkedElement(port PipePort, pipeLink *PipeLink) error {
-	if port == PipePortA {
-		if s.paPipeLink != nil {
-			return fmt.Errorf("区段uid=%s端口A已经设置关联元素: {uid=%s, port=%s}", s.uid, s.paPipeLink.Pipe.Uid(), s.paPipeLink.Port)
-		}
-		s.paPipeLink = pipeLink
-	} else if port == PipePortB {
-		if s.pbPipeLink != nil {
-			return fmt.Errorf("区段uid=%s端口B已经设置关联元素: {uid=%s, port=%s}", s.uid, s.pbPipeLink.Pipe.Uid(), s.pbPipeLink.Port)
-		}
-		s.pbPipeLink = pipeLink
-	} else {
-		return fmt.Errorf("区段uid=%s设置关联元素端口错误,不支持C端口", s.uid)
-	}
-	return nil
-}
-
-func (s *SectionImpl) CheckPipeLink() error {
-	err := checkPipePortLink(s, PipePortA, s.paPipeLink)
-	if err != nil {
-		return err
-	}
-	err = checkPipePortLink(s, PipePortB, s.pbPipeLink)
-	return err
-}
-
-func (s *SectionImpl) Uid() string {
-	return s.uid
-}
-
-func (s *SectionImpl) Ports() []PipePort {
-	return twoPorts
-}
-
-func (s *SectionImpl) GetLinkedElement(port PipePort) *PipeLink {
-	if port == PipePortA {
-		return s.paPipeLink
-	} else if port == PipePortB {
-		return s.pbPipeLink
-	}
-	return nil
-}
diff --git a/model/turnout.go b/model/turnout.go
index f911862..49132d6 100644
--- a/model/turnout.go
+++ b/model/turnout.go
@@ -1,7 +1,6 @@
 package model
 
 import (
-	"fmt"
 	"strings"
 )
 
@@ -13,10 +12,7 @@ type Turnout interface {
 var _ Turnout = (*TurnoutImpl)(nil)
 
 type TurnoutImpl struct {
-	uid        string
-	paPipeLink *PipeLink
-	pbPipeLink *PipeLink
-	pcPipeLink *PipeLink
+	*ThreePortsPipeElement
 }
 
 func NewTurnout(uid string) *TurnoutImpl {
@@ -24,72 +20,8 @@ func NewTurnout(uid string) *TurnoutImpl {
 		panic("Turnout uid is empty")
 	}
 	return &TurnoutImpl{
-		uid: uid,
+		ThreePortsPipeElement: &ThreePortsPipeElement{
+			uid: uid,
+		},
 	}
 }
-
-func (t *TurnoutImpl) SetLinkedElement(port PipePort, pipeLink *PipeLink) error {
-	if port == PipePortA {
-		if t.paPipeLink != nil {
-			return fmt.Errorf("道岔uid=%s端口A已经设置关联元素: {uid=%s, port=%s}", t.uid, t.paPipeLink.Pipe.Uid(), t.paPipeLink.Port)
-		}
-		t.paPipeLink = pipeLink
-	} else if port == PipePortB {
-		if t.pbPipeLink != nil {
-			return fmt.Errorf("道岔uid=%s端口B已经设置关联元素: {uid=%s, port=%s}", t.uid, t.pbPipeLink.Pipe.Uid(), t.pbPipeLink.Port)
-		}
-		t.pbPipeLink = pipeLink
-	} else if port == PipePortC {
-		if t.pcPipeLink != nil {
-			return fmt.Errorf("道岔uid=%s端口C已经设置关联元素: {uid=%s, port=%s}", t.uid, t.pcPipeLink.Pipe.Uid(), t.pcPipeLink.Port)
-		}
-		t.pcPipeLink = pipeLink
-	}
-	return nil
-}
-
-func (t *TurnoutImpl) CheckPipeLink() error {
-	err := checkPipePortLink(t, PipePortA, t.paPipeLink)
-	if err != nil {
-		return err
-	}
-	err = checkPipePortLink(t, PipePortB, t.pbPipeLink)
-	if err != nil {
-		return err
-	}
-	err = checkPipePortLink(t, PipePortC, t.pcPipeLink)
-	return err
-}
-
-func checkPipePortLink(pe PipeElement, port PipePort, pipeLink *PipeLink) error {
-	if pipeLink == nil {
-		return nil
-	}
-	plink := pipeLink.Pipe.GetLinkedElement(pipeLink.Port)
-	if plink == nil {
-		return fmt.Errorf("通道端口{uid=%s, port=%s}关联通道端口{uid=%s, port=%s},但关联通道的对应端口却未关联通道端口", pe.Uid(), port, pipeLink.Pipe.Uid(), pipeLink.Port)
-	} else if plink.Pipe.Uid() != pe.Uid() || plink.Port != port {
-		return fmt.Errorf("通道端口{uid=%s, port=%s}关联通道端口{uid=%s, port=%s},但关联通道的对应端口却关联了其他通道端口: {uid=%s, port=%s}", pe.Uid(), port, pipeLink.Pipe.Uid(), pipeLink.Port,
-			plink.Pipe.Uid(), plink.Port)
-	}
-	return nil
-}
-
-func (t *TurnoutImpl) Uid() string {
-	return t.uid
-}
-
-func (t *TurnoutImpl) Ports() []PipePort {
-	return threePorts
-}
-
-func (t *TurnoutImpl) GetLinkedElement(port PipePort) *PipeLink {
-	if port == PipePortA {
-		return t.paPipeLink
-	} else if port == PipePortB {
-		return t.pbPipeLink
-	} else if port == PipePortC {
-		return t.pcPipeLink
-	}
-	return nil
-}