diff --git a/protos/stationLayoutGraphics.proto b/protos/stationLayoutGraphics.proto
index ed37b72..ffda4ef 100644
--- a/protos/stationLayoutGraphics.proto
+++ b/protos/stationLayoutGraphics.proto
@@ -32,6 +32,7 @@ message RtssGraphicStorage {
   repeated CalculateLink CalculateLink = 24;             // 计算link信息
   repeated SlopeKiloMarker slopeKiloMarker = 25;         //坡度公里标
   repeated CurvatureKiloMarker curvatureKiloMarker = 26; //曲度公里标
+  repeated Curvature curvatures = 27;                            // 曲度
 }
 
 message Canvas {
@@ -353,6 +354,13 @@ message Slope {
   repeated string refDeviceId = 4; // 坡度关联的(坡度公里标)
 }
 
+message Curvature {
+  CommonInfo common = 1;
+  repeated Point points = 2;
+  sint32 curvatureNumber = 3;          //曲度的值--正负代表内外
+  repeated string refDeviceId = 4; // 曲线关联的(曲度公里标)
+}
+
 // 计算link结构
 message CalculateLink {
   CommonInfo common = 1;
@@ -361,7 +369,7 @@ message CalculateLink {
   RelatedRef aRelatedRef = 4; // A端（最小端）关联的端点
   RelatedRef bRelatedRef = 5; // B端（最大端）关联的端点
   repeated DevicePosition devicePositions = 6; //设备在link上的位置
-  int32 index = 7; //link唯一标识 
+  int32 index = 7; //link唯一标识
   message DevicePosition {
     int32 offset = 1;
     string deviceId = 2;